Isx blowing coolant out overflow but not overheating

25 posts · Joined 2007. #10 · Dec 14, 2009. Look at your reservoir while its running if head gasket. or cup you'll see bubbles coming up. if its the cups. coolant would be getting into the oil so keep an eye. 2001 3500LT CCLB Dually 4X4. SC III/1058 and brace By Fleece. PPE Hot+2 E.T. Xcelerator on lvl 10.

Isx blowing coolant out overflow but not overheating. #1 · Nov 20, 2010. I have a 2006 W900L. Does not run hot, but when driving down the road it looses coolant out of the overflow on the radiator. I can leave the truck setting idled …

Coolant Leaking out of Overflow Tank--HELP!! Hey i have a 1996 XLT with about 3000 miles on it. I just bought it from a cousin of mine and everything seems to run out fine on it. However, in the few miles i have been able to put on it this early in the season i have noticed leaking coolant coming from the top of my overflow tank.

It isn't a Polaris and you shouldn't have to worry about the temp much. Scratches down in low snow, let it cool if the temp light comes on. The caps can leak, you probably have that fixed by bending the tabs a little. Sometimes cap wear out and will not hold the 15 lbs of pressure in the system anymore and puke coolant.31842 posts · Joined 2008. #6 · Apr 26, 2015. With no lights/overheating warning showing up, it sounds like your reservoir is overfilled and as the engine gets up to operating temperature the excess (due to expansion of the coolant as it heats up) overflows from the reservoir. OR. perhaps there is a crack in your reservoir or the hose going ...Coolant filling up the overflow jug and not sucking back within 12 hrs means your head gasket is toast. Anytime you replace a failed head gasket you will need to send the head out for machining unless you want to do it all over again in short period of time. CD. 2008.5 2500 QCSB 6.7L 4x4 SLT Bighorn 68RFE 285/70R17 3.73.Combustion in the cooling system ussually gets worse and pushes coolant out overflow while driving due to overpressure. Rapid temp fluctuation and fan cycling is another clue to air or compression in the cooling system. I would also be replaced the thermostat with new. Especially if there is a chance it has been hot.Feb 13, 2012. #1. Got an 08 XP with just 1000kms, mint. It has been constantly spewing coolant out of the overflow, even when the reservior is way low. Sled runs fine, hasn't overheated yet but just a bit unnerving that I keep losing coolant. I did top it up a couple of times but just spits it back out, when warm ,levels are naturally higher.Mar 1, 2017 · 14782 posts · Joined 2012. #2 · Mar 1, 2017. Boiling generally indicates that the radiator surge tank is not holding enough pressure, which reduces boiling point. I would just replace the whole overflow tank and cap in case the tank warped. Looks like you'll be at around $7 for the cap and $25 for the tank. Replace the radiator cap and keep a consistent eye on the temp gauge. Also - be sure to bleed it properly - these engines are notorious for being difficult to bleed and get all the air out of, though usually they overheat if that's the issue. Do not let it overheat. H6 OBW VDC, H6 OB Sedan, Tribeca, Lifted XT6.

If you have a cooling system pressure tester you can test the cap, if not they are a maintenance item and fairly cheap, let the coolant get down a little to leave room for expansion. then see how it does. Of coarse if this isnt the problem, then we are looking combustion in the cooling system pushing the coolant out, in this situation, if you ...Recent coolant flush - not overheating . 2012 Jeep Wrangler 52k miles Service performed: new thermostat and coolant flush with Mopar OAT coolant (pink). ... I refilled the coolant with a "no spill" funnel and let it run for about 25 minutes to burp any air out.. I filled the overflow tank maybe 1/2 to 2/3 full (certainly past the "Max ...As previously stated, coolant blew out the coolant tank Reservoir, But still was visual at the bottom. between radiator , and coolant tank, it only took about 1/3 of a gallon to refill completely. That is how much blew out the Reservoir tank. Ran the truck and i could see Antifreeze circulating as it should.Oil in coolant but not overheating indicates a potential leak in the engine, which requires immediate attention by a mechanic. Neglecting this issue can lead to severe damage and costly repairs down the line. The presence of oil in the coolant may be a result of a faulty head gasket, transmission cooler, or oil cooler, among other things.Posted July 18, 2019. moral hazard said: Pushing coolant out of the overflow means that gas is entering the coolant system. On Subaru boxer engines, this is caused by a headgasket leak, combustion gases enter the coolant around the cylinders and that causes bubbles in the overflow bottle and when it's really bad it pushes coolant into that bottle.ISX-15 pushing coolant from pressure cap on reservoir tank. Hi. Everyone. Isx-15 mandated, def-egr 640k miles. About 7 months ago coolant started coming out my reservoir tank (pressure relief cap) got to the shop, it was tested coolant had gas, so head was removed tested turned out to be a bad head. Got a new head from cummins (5k) all new ...Rawze.com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion... / ISX Related Help / ISX-15 pushing coolant out of reservoir tank -help- Pages (3): « Previous 1 2 3 Next »We currently have the old 8640 in the shop and are trying to figure out why there is coolant pushing out of the overflow line. The tractor is our secondary tractor and has just rolled over 10,000 hours of which I have owned for less than 1000 hrs and do not know any history before that. The first symptoms of an issue were that there was no heat ...

Personally, once you pull it out, just replace it to be safe. Replace cap if not already done, check bottle for leaks as noted. Let it sit for 15-20 minutes and idle, watching for activity. The delta is getting high but with egr delete, hard to tell if you have plugged cooler without egr valve residue.In this case, the coolant is boiled and creates a bubble through the coolant system. As a consequence, you will see the coolant coming out of the overflow tank and radiator. Diagnosis and Solution. If the engine gets an issue and the head gasket blows out, you will see white smoke through the tailpipe due to engine overheating.Feb 13, 2012. #1. Got an 08 XP with just 1000kms, mint. It has been constantly spewing coolant out of the overflow, even when the reservior is way low. Sled runs fine, hasn't overheated yet but just a bit unnerving that I keep losing coolant. I did top it up a couple of times but just spits it back out, when warm ,levels are naturally higher.Coolant Expelling From Degas Bottle: Trucks built with the 6.0 PowerStroke engine may exhibit coolant loss, low coolant, or coolant blowing out of the degas bottle. First, ensure the coolant level is not too high and the expulsion is not due to normal expansion. The coolant level in the bottle at normal operating temperature should be at the ...Well, I had just bought a used 379 with a Cat bridge engine with 240 000 miles on a new head/gasket/o rings/liners-UTP had just ran out in Nov 09. Noticed that when I got her home it had coolant leaking from rad overflow hose. Stuck hose in some water and bubbles are blowing out. Did notice cap was 7lb and was told it should be a 16lb cap.

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1998 Mack E7 460 blowing anti freeze out of overflow tank. Working on a 98 Mack that once it gets warmed up it pressurized the overflow tank and blows antifreeze out. The customer had it any Mack and they replaced the rear head and number 5 liner. The air compressor has been replaced along with the radiator cap.1. Coolant was spilled. If you refilled coolant in your radiator and happened to spill it around the radiator, that could be one of the causes for unexplained steam. This is because the radiator has now risen in temperature and, as a result, is causing the surrounding spilled coolant to evaporate.It's not likely getting into the oil and definitely shouldn't be getting into the coolant. Make sure the air filters are good and the air filter piping is intact. Going back to your original issue though, if the EGR cooler or head gasket is leakingbit will get soot into the coolant. If the blowby is being caused by worn cylinder components it ...Chickenstick700. 250 posts · Joined 2006. #2 · Dec 31, 2007. Probably a head gasket. pull the thermostat and make sure the coolant is flowing good. and make sure the radiator is really clean mud likes to build up in the bottom part of the radiator.SKÅNES FAGERHULT, Sweden, June 16, 2021 /PRNewswire/ -- Concentric AB announces a long-term agreement with an existing e-pump customer, a global t... SKÅNES FAGERHULT, Sweden, June...

Jun 13, 2016 · Posts: 2,321. Let's take a look at why the coolant is coming out the overflow tube. The spring in the pressure cap has to be overcome by the pressure in the cooling system. Once that happens the rubber radiator cap gasket lifts off the filler neck seat and coolant flows out and down the overflow hose. Some flash mobs are so wild you can hardly believe they happened. Check out 5 mind-blowing flash mobs at HowStuffWorks. Advertisement By now, so many groups have pulled off success... 1. COOLANT LEVEL. Be sure you have the proper level of coolant in your vehicle. Overfilling may cause overflowing. 2. RADIATOR CAP. Cheap and easy to replace, this is the first thing to check. Your problem may simply be a loose or damaged cap not keeping coolant where it needs to be. The radiator cap is designed to allow access to fluids in a ... Yfz450 Keeps Pushin Coolant Out Overflow. Ok i recently replaced my whole top end. Pistion,Gaskets,cylinder, and the head was new in decemeber. As when the head gasket blows a sign of this is when the bike pushes the fluid out the overflow tube. Well i rode the bike here at a local track after i just installed all of this ,and normal break in ...Reasons Your Car Is Overheating Then Going Back To Normal Temperature. If the engine temperature rises but goes back down, the motor might be working too hard. It could be due to a bad thermostat, coolant temperature sensor, water pump, radiator fan, or temperature gauge. There could also be a clogged radiator, low coolant level, or there's ...Car overheating, coolant blowing out of overflow. Fan runs, but reclines in minutes, pressure build up in coolant hoses, computer says head gasket or cracked head Posted by darknherenow on Jul 11, 2012. Want Answer 0. Clicking this will make more experts see the question and we will remind you when it gets answered. ...For inward coolant spills, you should take a gander at the head (chamber block), it could likewise be that you have a defective head gasket, as this will allow the coolant to leak out. 3. External Leak. The most effortless to pinpoint what the issue is would be on the off chance that it is an outer break. For the most part, in the event that ...Sportsman 500 overheating. My 2000 Sportsman 500 keeps getting hot and puking out coolant. I know the radiator is clean, both sensors are good, and the fan is working. It takes quite a while to get hot, but after it does it begins to hiss and spit fluid out of the reservoir vent hole. It'll run a long time like that, slowly spitting out coolant ...Step #1: Check Coolant Reservoir Levels. Ideally, you inspect your car's coolant levels regularly, at least once a month. Regardless, the moment you notice any signs of coolant loss and no leaks are visible, you should check the reservoir before driving any further. If the coolant reservoir is empty and no leaks show, you should not start the ...Jan 9, 2022 · I tried a parts store pos and my coolant was hitting 225f and very concerning. Installed a Cummins one and it hasn't gone over 202f even during the heat wave we had last summer. Should replace the rad cap as well. Only from Dodge. $20. 2007 Ram 3500 Laramie CCDRW 5.9L G56 3.73 522000kms.

DrHicks said: Third, it's possible that your radiator cap spring isn't as strong as it should be, and is letting coolant into the overflow tank before it should. Not likely, but certainly is possible. Again, true. But doesn't explain the bubble or the fluid rising and falling in …

Smoke coming from the radiator is a cause for concern, but it does not necessarily indicate overheating. The most common reason for smoke from the radiator is a coolant leak, which can be caused by a damaged hose or a faulty radiator cap. Another possible cause of smoke is an oil leak, where oil drips onto hot engine components and creates ...I have an ISX 1 EGR DPF pushes coolant out the overflow, in last two months have replaced egr cooler and compressor and have run tests for combustion gas tests also three times, system pressure tested also. no coolant in oil or exhaust, pulled dessicant cartridge and checked for coolant , none found.May 13, 2014. 244. 1. 18. Blythe ca. Nov 27, 2016. #3. catman3126 said: let the pressure out when its cool, top the coolant off. drive it 30-40 miles and let it get hot, park it and checl the top radiator hose in the morning and see if its firm ike a tennis ball. if so pretty good chance your gaskets are done. time for studs.650+ Posts. Dec 04, 2010 #1. my 07 is pushing all the antifreeze out the rad cap. its not overheating, not smoking out the tailpipe, and not in the oil. just pushes it out the jug. if i take the cap off and let idle it shoots about a foot out the top. after it pushed everything out i dyed checked it and its showing exhaust in the system ...evan1. water pump, or head gasket, when it is running, feel different sections of the hoses too see if there hot OR take cap of and if the coolant moves around, it is the water pump. other than that it would be head gasket, its still a overheating issue. hope this helps:thumbsup:Nov 3, 2017 · Combustion in the cooling system ussually gets worse and pushes coolant out overflow while driving due to overpressure. Rapid temp fluctuation and fan cycling is another clue to air or compression in the cooling system. Car overheating, coolant blowing out of overflow. Fan runs, but reclines in minutes, pressure build up in coolant hoses, computer says head gasket or cracked head Posted by darknherenow on Jul 11, 2012. Want Answer 0. Clicking this will make more experts see the question and we will remind you when it gets answered. ...A leaking overflow hose will run your coolant down fairly fast and you should see an anti-freeze trail where it leaks. Changing that is easy and not expensive as well. Do both then sleep well. :smile: 1995 Camry Wagon LE. 2.2 5S-FE, Auto, 261K. C.Many have replaced leaking the coolant reservoir. However, it the level is staying the same, I wouldn't mess with it. When the engine is cold, one chamber about full and the other empty is normal. 2023 LZO CC std box 4x4. previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04.5 LLY. jamalc6996.I parked and turned it off and seen coolant on the side of the engine that came from the reservoir which was boiling again. The coolant is clearly hotter than what it should be, which could be due to: lack of heat rejection from the coolant. Things that typically cause this are inoperable radiator fans or a clogged radiator. lack of temperature ...

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Today about a week later, my jeep overheated again. Same thing. High coolant level in reservoir yet low in the engine /radiator. I'm wondering if it's possible the reservoir cap has weakened (117,000 miles on the jeep) and is venting my coolant out causing low levels... It's definitely coming from the overflow tube which the cap seals unless ...Recent coolant flush - not overheating . 2012 Jeep Wrangler 52k miles Service performed: new thermostat and coolant flush with Mopar OAT coolant (pink). ... I refilled the coolant with a "no spill" funnel and let it run for about 25 minutes to burp any air out.. I filled the overflow tank maybe 1/2 to 2/3 full (certainly past the "Max ...Pushing coolant thru overflow. Ok I’m new to this forum but I have a 07 Chevy duramax lbz classic body style. I can be just driving it and it’s random sometimes it does it the day after I add coolant or week later. I can be driving it and stop somewhere and leave the truck running when I left the truck temp was 210, I get back in and it’s ...Here are the most common symptoms that your Dodge Caravan is overheating. 1. Gauge/Temp Light. Your Caravan will be equipped with a temperature warning light and/or a temperature gauge. The most common symptom of overheating is the temperature light coming on. If this light does come on, make sure that you get off the road quickly and safely.Ill show you why you have overheating issues and backpressure in the coolant system.Posted June 3, 2018. With a cold engine, remove the cap and observe if there are excessive bubbles in the coolant, if so, you might want to investigate deeper if you have a blown head gasket. If coolant spits out from around the cap rather than the overflow line, check for blockage of the line. 15 year old cap is also likely due to be replaced ...1702 posts · Joined 2001. #12 · Jul 8, 2009. Yes, this is exactly how it works, coolant flows both ways. The overflow also helps to keep air out of the system. Any small air bubbles enter the overflow tank and float to the top, when it cools, only liquid is drawn back in. Save Share.Does not overheat, normal oil temp, no power loss, no white smoke in the stacks. Coolant tank is turning darkish with gummy residue in the walls. If anyone may have an idea what it could be i will appreciate any advice. Thanks and be safe. kabusheke2004, Oct 1, 2016. #1. Trucking Jobs in 30 seconds.Harder to get when you need it and your in the middle of nowhere. and (B). costs more and you get no gains whatsoever over El-sheap-o red ELC (extended life coolant). RED ELC (red extended life coolant). - Can be had at all truck stops + most auto stores and is only about $8 a gallon or so at many suppliers.High mile 6.5's that all of a sudden start blowin coolant usually have a failed head gasket. Cyls #'s 1 and 2 (front R and L) are the usual suspects. 98- 2000 blocks will crack #8 cylinders at times. Rip the heads off and have a peek.Solution: Check your hoses to see if any coolant is coming out. Replace the hose (s) if you notice coolant coming out of them. If you notice coolant leaking out of your thermostat that can be an easy fix. It only costs about $10-$15 to replace a vehicles thermostat and is one of the easiest repairs you can do yourself.Overheating 2. California Dreamin You can't even start to look at overheating issues without first checking the radiator fan and thermo switch are working properly. Nearly all T25'a (apart from 1.6D CS) have a dual speed fan which comes on in two stages. 1st speed comes on at 87°C and goes off again at 76°C 2nd speed comes on at 93°C and ... ….

It is being blown out of the tube on the overflow tank. I have to be super careful taking the cap off, because there is so much pressure building up that it will blow the cap out of the air and shoot a geyser of coolant 15' in the air. I then add about a gallon of coolant and go on my way until the light comes on again.yes 30 over and yes a phantomracing intercooler. You need to properly put the coolant in and get all the air bubbles out. Turn your heater on full and flush the system. (*disclaimer* of course don't remove the cap unless its cold.) 0. Mar 6, 2014.Sep 21, 2004. #1. Coolant is leaking from the overflow tube. The first time it was dripping out slowly & I suspect while I was driving, because there was a drip line where I turned onto my driveway. Never dripped any more once the engined stopped. Tonight was the second time in a week & there was a pool of coolant when I went back outside after ...A failed head gasket is caused by a cooling system that is no longer doing its job. For example, when a car engine heats up too much, the heat will cause the engine block and cylinder head to expand more than they're supposed to, resulting in the head gasket failing. This allows antifreeze to leak into the combustion chamber, causing white ...There are many reasons why coolant blows out of reservoir, which happens in several vehicle parts. Let's dive in! Automotive Cooling System. 1. An Unactivated Cooling Pan. When the means of transport stops, the fan takes responsibility for keeping the radiator (engine cooling). In this case, a series of wires hooks the radiator.The B7100 doesn't have a temp gauge and overheating is signified by coolant blow by with a whistle sound. Mowing think grass (use low gear) could cause overheating and that would explain the coolant loss. You need to check and make sure that your radiator is not clogged up, use compressed air to blow out the debris in the fins.ford_doctor. I was thinking the CAC was leaking however you already replaced it. You might want to start looking at the secondary cooling system itself - I would suspect the system is overheating and if you removed the EGR cooler the ECT2 sensor is now gone unless your delete relocated it.Smoke coming from the radiator is a cause for concern, but it does not necessarily indicate overheating. The most common reason for smoke from the radiator is a coolant leak, which can be caused by a damaged hose or a faulty radiator cap. Another possible cause of smoke is an oil leak, where oil drips onto hot engine components and …Keeping your computer running within safe temperatures is important, especially as the temperature rises outside. Here's how to make sure your computer's not overheating—and how to...SKÅNES FAGERHULT, Sweden, June 7, 2021 /PRNewswire/ -- Concentric AB receives a new development contract to supply electric coolant pumps for a fu... SKÅNES FAGERHULT, Sweden, June... Isx blowing coolant out overflow but not overheating, Sep 14, 2009 / massey ferguson overheating issue #1 . M. massey1035 New member. Joined Sep 14, 2009 Messages 10. ... after that the temp gauge starts to climb slowly to about 100 degrees celceus. i will shut the tractor down and it will blow coolant out the overflow. i have replaced the thermostat and cleaned the radiator. The radiator seems to ..., 06' ISX Blowing Coolant out of Radiator overflow. Jump to Latest Follow 21 - 21 of 21 Posts. 1 2. bmoeller · Senior Member. Joined Dec 23, 2008 · 4,829 Posts ..., 2. Visible coolant leaks. Another symptom commonly associated with a bad or failing coolant recovery reservoir is leaking coolant. If the coolant recovery reservoir becomes damaged or develops any cracks, perhaps due to old age or boiling coolant, it will cause coolant leaks. Small leaks or cracks may produce steam, drips, and a faint coolant ..., The coolant was being blown out of the over flow bottle. Upon removing the head. We noticed 5 of the 6 injectors had failed. The tips of the injectors had discentigreated. We have no clear indication it was the head gasket, we gave it a full visual inspection. And found nothing that jumped out at us. According to the driver the truck was ..., Overheating 2. California Dreamin You can't even start to look at overheating issues without first checking the radiator fan and thermo switch are working properly. Nearly all T25'a (apart from 1.6D CS) have a dual speed fan which comes on in two stages. 1st speed comes on at 87°C and goes off again at 76°C 2nd speed comes on at 93°C and ..., Jason have a navara D40 V9X 550 V6 which is blowing coolant out the overflow tank and overheating. No white exhaust, no water in the oil, no oil in the water. Still have full power but i have an EGR position fault. Would the EGR be passing exhaust gas into the cooling system?, 19. Location. Marion AR. Tractor blew head gasket. Had coolant coming from overflow. Had head shaved and reworked, put on new head gasket, same problem. Put …, At about 55,000 i started having the coolant system blowing fluid out of the pressure overflow cap on the overflow container at random times. It started slow, having to add fluid every 1500 miles or so and has gotten to every 50 miles it’s giving me a low coolant level. All my temps are running normal., The coolant was being lost through the coolant overflow hose. I fought with this, stopping every 30-45 minutes and adding 1/4 to 1/2 gallon of water. The engine never did run hot, with the hottest it ever got being a hair over 200., 1) Localised boiling in the cylinder block due to bad coolant circulation somewhere (called nucleate boiling in industry) which generates a lot of gas and pressurizes the cooling system. Unlikely given the temperatures you indicate. 2) Head gasket failure or cracked cylinder block. Your symptoms are classic signs of 2) and would have me doing ..., 1998 Mack E7 460 blowing anti freeze out of overflow tank. Working on a 98 Mack that once it gets warmed up it pressurized the overflow tank and blows antifreeze out. The customer had it any Mack and they replaced the rear head and number 5 liner. The air compressor has been replaced along with the radiator cap., The coolant was being blown out of the over flow bottle. Upon removing the head. We noticed 5 of the 6 injectors had failed. The tips of the injectors had discentigreated. We have no clear indication it was the head gasket, we gave it a full visual inspection. And found nothing that jumped out at us. According to the driver the truck was ..., Remove the bolts that keep the coolant reservoir attached to the car body, but don’t disconnect the coolant hose. Work the reservoir free of the car body. Wrap a rag around the coolant hose and disconnect it from the reservoir, letting any coolant in the hose drain into the drain pan. Now, unscrew the clamp on the other end of the coolant ..., I'm going to guess what you have is normal, unless the overflow tank is overflowing (extreamly high level, or over the top). Under normal operating temperature & pressure, around 200 degrees, the water is allowed to expand (overflow) into the overflow tank. When it cools down, it is drawn back into the radiator., Theres only 4 ways usually to lose coolant out cap, if have 50% coolant. Moderate overheat wont do it, it would take major. Enough to do damage. 1. Loose cap 2. Faulty cap relief due to debris or spring 3. Blown hg overpressures coolant system/ increases volume 4. Coolant seriously overfilled - liquid full. That looks nasty. Really nasty., Mar 23, 2018 · Next would be to drop the oil pan, pressure up the coolant system to 20lbs and look for coolant running down the liner's. You may need to let it set overnight before coolant will be seen. Hopefully it will be just a leaking egr cooler. When mine was spraying coolant like your's it was a bad head gasket, caused by a head bolt not properly torqued. , 1998 Mack E7 460 blowing anti freeze out of overflow tank. Working on a 98 Mack that once it gets warmed up it pressurized the overflow tank and blows antifreeze out. The customer had it any Mack and they replaced the rear head and number 5 liner. The air compressor has been replaced along with the radiator cap., 4. As long as you have replaced the radiator cap, then there should not be excessive pressure in the cooling system. The system is designed to hold 16PSI. If it does exceed this pressure, it will release pressure into the overflow tank. When the engine is cold, the thermostat is closed, not allowing coolant to flow through the upper radiator ..., May 30, 2020. #1. Have a 99 TJ 4.0. Replaced everything in the cooling system including radiator, water pump, thermostat, fan clutch, overflow bottle. Has 180 deg stat with a 3/16 hole drilled in the flange for burping. It runs at 210 degrees sometimes a little warmer. It keeps blowing coolant out of the vent on the overflow bottle and the fan ..., I suggest you simply refill the radiator with coolant, top up the overflow and run the engine to "burp" the system with the heater on high. You will know when the air is almost out as the heater will be blowing hot air. After the engine has cooled down (a couple of hours) check the radiator and overflow and top off as required., 5. Blown head gasket. When it comes to overheated engines, coolant coming out of the overflow tank is a sign that something is seriously wrong. It could be due to a cracked radiator, a weak water pump, or even an air bubble in the cooling system. But, most often it’s an indication that the head gasket has blown., 4) Blown Head Gasket. Another common reason why your car is suffering from a leaky radiator cap is because of a blown head gasket. The head gasket's role is to keep the coolant and the engine oil separate. Once it breaks, the radiator cap will not be able to keep the coolant from escaping., Nov 20, 2010 · 21 posts · Joined 2010. #1 · Nov 20, 2010. I have a 2006 W900L. Does not run hot, but when driving down the road it looses coolant out of the overflow on the radiator. I can leave the truck setting idled up and looses no coolant. Kenworth looked at it and said the radiator was plugged but agin the truck does not run hot. , This is done by sucking gases in either the radiator or overflow tank and mixing with a chemical. Be careful though, if your water pump has failed, coolant may back up in the radiator or overflow tank if no radiator cap is present. If the test shows no exhaust gases (hydrocarbons), then most likely if the thermostat (s) have been check, its the ..., Testing For Coolant Loss. First, you should make sure your engine isn't overheating. If your radiator cap doesn't have pressure and your temp gauge reads hot, you may have a leak in one of your hoses or head gasket failure. However, most coolant loss situations are caused by leaking water pumps or radiators. The signs of these leaks can be ..., So, “my car is leaking water but is not overheating,” you say. Well, four main reasons that might be two are very expensive to fix, and the other two are relatively cheap. The two cheaper possible causes are a bad expansion tank/radiator cap or an external leak such as cracked hoses. The other two are a faulty head gasket or a leaking ..., If you have a cooling system pressure tester you can test the cap, if not they are a maintenance item and fairly cheap, let the coolant get down a little to leave room for expansion. then see how it does. Of coarse if this isnt the problem, then we are looking combustion in the cooling system pushing the coolant out, in this situation, if you ..., AUTOMATIC. 149,000 MILES. Recently purchased the car listed above (RT), it has been blowing coolant out of the overflow tube on the reservoir. We bled the coolant system Tuesday, and all was fine until today temperatures rose to 215 while it was blowing coolant. No coolant in oil, and not blowing smoke. The engine is still performing normally., Jul 17, 2011. #1. I have an International 4400 straight truck with a DT466 engine. For a while now, the truck keeps running hot, constantly hitting 210-215, even 220 if the climb is right. We are always 2 bottles low on coolant, and after refilling it still runs hot, and a bottle is gone in a day. I've been told I could have a cracked head ..., yes 30 over and yes a phantomracing intercooler. You need to properly put the coolant in and get all the air bubbles out. Turn your heater on full and flush the system. (*disclaimer* of course don't remove the cap unless its cold.) 0. Mar 6, 2014., EGR cooler. Take a look at the rear of engine, passenger side, top of transmission with a flashlight. If you see coolant puddled on top of transmission chances are you have EGR cooler failure. This is probably a big ticket repair so you should get it diagnosed properly at a reputable shop., The radiator hoses can pop off for several reasons. Typically it is because the hose or the plastic neck that connects it to the radiator/component has failed. You will want to inspect both sides of the problem hose, and determine if the clamp is doing its job. Considering it is the top hose, the coolant is coming from the thermostat and ..., As the engine/radiator cools, the cap will allow the vacuum to suck back in the coolant which was expelled as everything heated up. If the system isnt allowed to do this then the hoses will collapse from the vacuum. :thumbsup: '01 2500 Sport 4x4 5spd w/Fastcoolers, Mag-Hytec, EZ, RV275's, 4" w/o muffler, South Bend, Steering brace, aFe, 2 lo ...