Isx blowing coolant out overflow but not overheating - My 2006 Peterbilt 379, Cummins ISX engine, has used 4 gallons of coolant this week. It does not appear to be leaking anywahere, but when the truck is running, you can smell hot coolant around the passenger side. The low coolant light never comes on while running, but only after being shut off for 12 hours or more. I'm guessing EGR cooler?

 
When this happens, it could open too late, allowing the engine to get hotter than it should. If the thermostat hasn’t completely failed yet, the engine might not overheat, but it could only be a matter of time. 2. Clogged or Bad Radiator. The car radiator transfers heat away from the engine through a series of tubes.. How many years did tay kay get

Apr 20, 2012 · 1 post · Joined 2012. #1 · Apr 20, 2012 (Edited) hey im new to this. I have an 01 sportsman 500 I just picked up and its overheating and blowing coolant out of the overflow bottle. I have cleaned the rad, the thermostat is new and i checked its working, it has a new head gasket, the rad isnt heating up enough to turn the thermo switch on but ... 4. Found overflow reservoir overfull. Attempted air purge and returned coolant to radiator, filled overflow to proper level. Got heat out of heater core. 5. Four days later, overheating again, temp 237f, running cool on highway, first rise in temperature was second traffic light after highway. cooling fan at max, heat would come and go from ...coolant will bubble in overflow bottle and temps should rise. DD: 2004.5 Dodge RAM 2500 QC/SB,4WD,5.9l,143k miles. When I get time to restore: 1969 Chevrolet Custom Camper/20 350 with turbo 400 trans 68,000 original miles (was my great-grandfathers) Share. Like.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 ...Take off the radiator cap & look carefully around the rim & inside of the radiator neck. There's 2 different places where the 2 gaskets in the cap will seal against. 1. The outermost rim of the radiator neck (above the hose connection for the overflow). 2. Just below the hose connection should be a kind of ledge where the next gasket will seat.963 posts · Joined 2011. #3 · Jan 22, 2015. Check the small diameter hose that goes from the over flow bottle to the top of the radiator on the passenger side. Check all the other hoses too. I had a similar problem about the coolant a couple of years ago and it was that small hose leaking a little.4 CYL. 2WD. AUTOMATIC. 156,000 MILES. Hello, about a month ago my car started to overheat and coolant was coming out of the overflow tank while driving. So my mechanic took the engine apart put a new head gasket, resurfaced, new timing belt and water pump, new radiator, new hoses, new coolant overflow tank. But it still overflows the coolant tank.Again, a pressure check should be performed to help find where your coolant is leaking. If the fans have failed, or are failing, the coolant will overheat and possibly even boil, especially in city or stop and go traffic. This can push boiling coolant past the rad cap and even overflow the coolant reservoir.It has overheated once and only blows coolant when the pro is turned up and out messing around or towing. So basically under a fair amount of engine load. Sent from a 2x4 with copper wires and flux capacitor. 89W150SB, VP fueled 12v. 92W250 LE, 6",35's on 18's, cross over steering, etc. Share.I have yet another problem with my 2007 t600. It started pushing coolant out of the overflow tube yesterday. Its never done this before. I have no other issues with how it runs, no overheating, rough running, etc.. I added some to it about 2 weeks ago and i might have overfilled it, but i have added it before and its never pushed it out.Ridgway81432. Run it with the radiator cap off, from cold, to see how long it take to push coolant out and feel if its warm. If the coolant is cool, the thermostat is not open and there will be no circulation movement, so combustion pressure from and failed gasket is the force pushing the coolant out.7 posts · Joined 2013. #1 · Jan 22, 2013. Coolant is being pushed out of my reservoir through my overflow tube. I have replaced the cap, thermostats, waterpump, and ECT sensor. My temp fluctuates mostly staying cold then gradually getting warmer but then drops cold again. It takes forever to get it warmed up where it'll allow heat through the ...If you’ve ruled out an internal leak, that means your engine is burning the coolant somewhere else. The most common place is the radiator cap. Radiator caps hold the pressure inside the system, but if it’s not sealing properly, then some hyper pressurized coolant will escape in the form of steam. Once your engine is warmed up, you’ll be ...240. Nov 13, 2022. #1. Back in August I witnessed coolant leaking from the overflow reservoir. In 30 plus years it has never done this before and the mechanical temp gage showed normal, no actual overheating. I knew this was not a good sign. The vehicle remained parked until cooler weather was on hand since this would not be a simple task.I end up replacing the radiator as well as the fan motors with the relay because the fans wouldn't turn on. I ended up using a power probe straight to the old fan motors and only fan #2 worked. I end up putting it all together-bled all of the air out of the cooling system with an airlift evacuation tool-and this thing is still overheating!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.With a cold engine, remove the radiator cap and install a spill proof funnel in its location. Fill the funnel to 1/2 full with fresh coolant. Start the engine and let it warm up. As the engine reaches the setpoint of the thermostat, bubbles of air will come up through the coolant in the funnel; keep the funnel 1/2 full by adding more coolant as ...If you’ve ruled out an internal leak, that means your engine is burning the coolant somewhere else. The most common place is the radiator cap. Radiator caps hold the pressure inside the system, but if it’s not sealing properly, then some hyper pressurized coolant will escape in the form of steam. Once your engine is warmed up, you’ll be ...Ill show you why you have overheating issues and backpressure in the coolant system.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 ...The issue of coolant being blown out through the overflow but no overheating is commonly caused by a faulty radiator cap or a clogged cooling system. This can lead to excessive pressure build-up resulting in coolant being forced out of the overflow.#1 · Mar 19, 2021 (Edited) I Need help please. I have a Ram 2014 2500 6.7 stock in California. Noticed I lost coolant with a low coolant message two months ago. They …Put a cap on it! The easiest problem to fix could be a faulty radiator cap. It may not be able to hold the pressure because it is worn or broken, allowing coolant to leak past it and out the overflow. Without spending any money, take a cap from another bike and put it on to see if that’s the problem.Nov 7, 2016 · When towing a decent load (37' 5th wheel toy hauler) with in a hour, the low coolant light comes on. 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. 7 posts · Joined 2013. #1 · Jan 22, 2013. Coolant is being pushed out of my reservoir through my overflow tube. I have replaced the cap, thermostats, waterpump, and ECT sensor. My temp fluctuates mostly staying cold then gradually getting warmer but then drops cold again. It takes forever to get it warmed up where it'll allow heat through the ...Hi Ronda. Thanks for contacting us today. It's quite possible that your thermostat or coolant temperature sensor is what is causing this issue. If the gauge is malfunctioning, it will cause the coolant to run hotter than it should, creating the steam you're seeing and beginning to overheat the engine. As such, I wouldn't recommend driving ...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.The V6 doesn't normally blow the headgasket. Only the earlier 3VZ engine 92-93 does. Start off simple. Replace that radiator cap if the obvious is not so obvious (i.e. milk shake oil cap or coolant) I had an issue where the coolant reservoir in my friends 1995 V6 was overflowing and was bubbling after I did a few coolant drain and refills.May 29, 2019 · Hey guys, I have a 2011 Mack CXU613 with a 455 hp MP8 motor. The truck started pushing coolant out of the reservoir tank when climbing up mountains and long hills. The problem seems to be getting worse. I did replace the coolant tank with one of Ebay some time ago, and its maybe possible that I h... 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.Same issue. Coolant low in the pressurized size after around 200 miles, overflow side 3/4 full but under load I can see where it's blowing out of the overflow side release port on the passenger side. Radiator hose is soft in the morning no pressure, no overheating or running issues.The overflow tank holds coolant. When the level in the cooling system gets too low, coolant is withdrawn from the storage to enter the cooling system. On the other hand, if there's too much pressure, coolant will be pulled from the cooling system back into the overflow tank. Because the cooling system is a closed unit, the amount of coolant ... Elizabethtown, ky: Didnt want to hijack the thread below. we have a 2004 pete with an ISX 460 in it. today i drove it to the other farm and filled with corn, headed out to the elevator and it got hot and shut down, when shut off it began blowing coolant out the overflow on the radiator tank cap. Ratings: +378 / 0 / -0. #3 Feb 22, 2014. Last edited: Feb 22, 2014. R53 Cooling System Primer: For 2002-2006 R50 MINI Cooper and R53 Coooper S Hardtops, and 2005-2008 R52 MINI Cooper and Cooper S Convertibles. Thermostat. Thermostat begins to open at 89-92° C (192° F - 198° F) and is fully open at 103° C (217° F)."It's a very dangerous situation because Egypt is not going to be able to live that way," said Trump on the call. "They'll end up blowing up the dam." Ethiopia is calling the state...Supplanting a leak head gasket in stores can cost you $1000 to $2000. Yet, if you can fix it at home, the amount of money you have to spend is about $12 to $20. The way of replacing it at home is quite easy. …No signs of overheating that's all. Submitted: 1 year ago. Category: Medium and Heavy Trucks. Show More. ... i have an ISX 1 EGR DPF pushes coolant out the overflow, ... an isx15 cm2250 400hp with 680K miles on it in a 2012 peterbilt 386 that is over pressurizing the cooling system and blowing coolant from the pressure relief cap ...These systems are under pressure during normal use. If you have a leak in the overflow tank, or elsewhere, it can lower the pressure in the system and cause the water/coolant to boil a bit. Get the pressure back up (new overflow tank) and it will stop. The bubbling can come from a couple of things; it ain't normal.Had coolant tested for carbon and blue turned to green & replace the head gasket and studs. still losing coolant. We replace the coolant reservoir. still overflowing. I’m not overheating, not blowing any white smoke/exhaust. It runs at about 188°- 196° At 206° the fan kicks on. Mechanics thinking it’s a bad EGR cooler.Overfilling the radiator or overflow tank. One common cause of radiator coolant overflow is overfilling the radiator or overflow tank.When the coolant level exceeds the recommended limit, it can create excessive pressure within the cooling system.As a result, the excess coolant is forced out of the radiator or overflow tank, leading to overflow.. To prevent overfilling, it is important to ...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.The blow-up of meme stocks is another sign of a short-term market top, writes James "Rev Shark" DePorre, who says those who chased some of the highest risk situat...Had coolant tested for carbon and blue turned to green & replace the head gasket and studs. still losing coolant. We replace the coolant reservoir. still overflowing. I'm not overheating, not blowing any white smoke/exhaust. It runs at about 188°- 196° At 206° the fan kicks on. Mechanics thinking it's a bad EGR cooler.i have a 97 kx 125 would like to know if the standard radiator is copper or alloy also when i got it it had a 1.1 radiator cap and the bike overheated. I now have put a 1.4 cap on but it is still flowing coolant out the overflow. the bike isnt overheating now but is annoying having to fill up eve...coolant will bubble in overflow bottle and temps should rise. DD: 2004.5 Dodge RAM 2500 QC/SB,4WD,5.9l,143k miles. When I get time to restore: 1969 Chevrolet Custom Camper/20 350 with turbo 400 trans 68,000 original miles (was my great-grandfathers) Share. Like.2. Replace head gaskets, valley pan gasket, knock sensors, grommets & do TSB re knock sensors. Oil pressure sending unit, camshaft position sensor, intake manifold gaskets, exhaust manifold gaskets & bolts, coolant bypass gaskets. Cost ~$450 in parts. 3. After everything is buttoned up, oil change and new coolant.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.klhansen. If it was a cracked injector cup, your coolant tank would be puking fuel out of the cap. It would be pressurized only when your fuel pump was running. I suppose you could hot-wire the fuel pump and see if the coolant level rises. But you'd see fuel floating on top if it's gotten high enough to reach the cap.I have a 2017 Ram 3500 6.7 that just started pushing coolant out of the coolant reservoir. First thought was a head gasket, but it's not running hot and hasn't been overheated, a stock boost. The light will be on for low coolant in the morning, fill it back up to the mark, drive 30 minutes, and the level is at the top of the cap and pushing out ...10. A Fluid Leak. All kinds of fluid leaks can cause a burning smell from the car without overheating. These can range in severity from something as simple as oil dripping off the dipstick and landing on the exhaust manifold, to something as severe as coolant spattering on the engine block from a cracked cylinder head.Overheat/coolant circulation issue, stumped. Good day to all of you, First time poster from The Netherlands, but been lurking this forum for a while. I'm having some weird cooling issues with my 2006 Mazda 6 …Right above where your headers connect. It's greenish in color. Remove radiator cap first. Crack that screw or remove it and don't lose the tiny washer behind it. If there is air you should hear it hiss when loosened. Let some coolant come out and tighten it back up. Manual states a little different when doing it but that should tell you if ...The main causes of Coolant Reservoir overflowing but not overheating are faulty radiator caps, air pockets in the cooling system, and head gasket leaks. These issues can lead to improper pressure regulation, trapped air, and combustion gas entry, causing coolant overflow.Three major things cause coolant to boil out of the tank, assuming you've bled your coolant system properly. A) Bad radiator cap and/or crud around mating surface ... Coolant coming out of overflow drain but not overheating. DSMToretto; Feb 16, 2014; Newbie Forum; 2. Replies 26 Views 81K. Mar 25, 2014. AWDThunder. Question; Overflowing out of ...Driving while overheating can cause long term engine damage. 2. White Smoke. If your Fusion's engine gets hot enough, the coolant will begin to boil over and manifest itself as steam coming up from under the hood. It does this to relieve the pressure on the cooling system before lasting damage can occur. 3.Jan 25, 2024 · 3. Combustion Leak Testing. A combustion leak tester checks if coolant is leaking into the combustion chamber through a blown head gasket or cracked head. Add the tester fluid to the radiator, run the engine and check for color change indicating exhaust gases in the coolant. 4. Blowing out the overflow on my 2012 kenworth isx cummings. 2012 kenworth W900L isx 15 Cummins 550. I would like to but - Answered by a verified Technician ... i have a 2012 cummins isx at time blowing antifreeze out the presser cap not all the time just now and then ... it has started blowing coolant out the overflow.Hi there I am new to this site and have a question. I have a 2001 Dakota R/T. The coolant is spewing out of the overflow tank. The truck does not overheat and actually runs cool. I live in SoCal and it has been in the Low 100's and it isn't even at halfway on the temp gauge, and this is sitting in wonderful LA traffic.May 4, 2004 · 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 ... If you find that you’ve got a car running hot but not overheating there might be a few reasons: Clogged or damaged radiator. Low coolant level. Damaged water pump or thermostat. Overworked engine. Assuming your cooling system is working properly meaning it’s full of clean coolant and doesn’t have any damaged or clogged …Watch this video for tips on how to shovel snow and use a snowblower more safely and efficiently this winter. Expert Advice On Improving Your Home Videos Latest View All Guides Lat...Coolant coming out of overflow. Well I got everything back together on my 03 Edge today. I let it idle and warm up. Its runs great and idles just fine. But once its warmed up coolant starts to come out the over flow. It just had a fresh rebuild so the headgaskets should be fine.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.no rebuild needed, just an air compressor.lucky guy!Music : Ikson - HarmonyMusic by https://soundcloud.com/iksonPuking coolant out the overflow is an indicator of to much pressure in the cooling system from either engine overheating or combustion gases being forced into the cooling system and overpressurizing it. ... it turn out the cap was blowing off at just above the thermostat temp so when I would climb hills it would burn a little coolant off, then ...Temps outside going down 85 to 90, lost just over a gallon of fluid then. Temps coming home, around 70 and raining, short of a gallon used to top off. Both times, had display up, max temp showing in display, about 205, most of the time around 190. Chris . Sandpiper 379 FLOK, Volvo 2012 730.The common reason for no coolant in radiator but the reservoir is full is a blown head gasket. If a head gasket blows, the combustion gases from the cylinders will leak into the cooling system and push the coolant into the reservoir. Once the reservoir gets filled, the rest will waste through the overflow outlet.One crucial aspect of maintaining this powerful engine is understanding the coolant hose system. The coolant hose diagram provides essential information on the routing and connections of the coolant hoses, enabling proper maintenance and troubleshooting. The coolant hoses in the Cummins ISX engine play a vital role in maintaining optimal engine ...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 ...Supplanting a leak head gasket in stores can cost you $1000 to $2000. Yet, if you can fix it at home, the amount of money you have to spend is about $12 to $20. The way of replacing it at home is quite easy. …The blue dye test is to verify that exhaust gasses are not getting into the cooling system and creating excessive pressure that would force coolant out of the tank. …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 ...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.No signs of overheating that's all. Submitted: 1 year ago. Category: Medium and Heavy Trucks. Show More. ... i have an ISX 1 EGR DPF pushes coolant out the overflow, ... an isx15 cm2250 400hp with 680K miles on it in a 2012 peterbilt 386 that is over pressurizing the cooling system and blowing coolant from the pressure relief cap ...i have a 97 kx 125 would like to know if the standard radiator is copper or alloy also when i got it it had a 1.1 radiator cap and the bike overheated. I now have put a 1.4 cap on but it is still flowing coolant out the overflow. the bike isnt overheating now but is annoying having to fill up eve...ISX 15 Puking Coolant From Reservoir Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by lawtransport, Dec 24, 2017. Page 1 ... and when I open the hood the upper radiator hose is pulsating and the coolant appears to be boiling causing it to come out of my overflow hose on the coolant reservoir, I have had the reservoir, cap and ...91 posts · Joined 2007. #2 · Apr 3, 2013. A thermostat stuck wide open or not in the system at all can cause overheating, as coolant flows too quickly thru the radiator to cool. A radiator cap that has lost spring tension can allow coolant to escape to the overflow and lost, cheapest and easiest to try. Also, the cooling system needs to be ...I HAVE A 2006 HINO 258 WHICH IS OVERHEATING AND PUSHING COOLANT. IT WILL RUN FINE SITTING AT IDLE BUT WHEN ACCELERATED WILL PUSH COOLANT. ... I have a Cummins ISX 2008 model, it has started blowing coolant out the overflow. The coolant tank is a two part tank, ...5772 posts · Joined 2009. #17 · Jun 22, 2011. For those of you who have deleted your EGR cooler, coolant being blown out the reservoir is a good indication of a head gasket failure. For those of you who have NOT deleted their EGR cooler, you may have a blown cooler that is pressuring up your coolant system and blowing coolant out the ...Looking to launch or refresh your personal website? Check out these great examples of personal blogs, portfolios, and resume websites for inspiration. Trusted by business builders ...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 ...

Elizabethtown, ky: Didnt want to hijack the thread below. we have a 2004 pete with an ISX 460 in it. today i drove it to the other farm and filled with corn, headed out to the elevator and it got hot and shut down, when shut off it began blowing coolant out the overflow on the radiator tank cap.. Good feet stockton

isx blowing coolant out overflow but not overheating

With car motors a trick is to remove the oil and replace filter then fill with auto trans fluid and run for a while at idle. The high detergent in ATF will help with the remaining coolant in the oil system. If oil is in the coolant after the repair run the engine with water and some laundry soap at idle for a while.How Your CX-5's Cooling System Works. Your CX-5's cooling cycles engine coolant from the engine through the radiator. Water Pump- Your CX-5's water pump pushes the coolant through the entire system. The coolant starts in the radiator, enters the engine, pulls heat out of the block and heads, and returns to the radiator to be cooled again.2. Replace head gaskets, valley pan gasket, knock sensors, grommets & do TSB re knock sensors. Oil pressure sending unit, camshaft position sensor, intake manifold gaskets, exhaust manifold gaskets & bolts, coolant bypass gaskets. Cost ~$450 in parts. 3. After everything is buttoned up, oil change and new coolant.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.Overheating issues. This last weekend my truck started to overheat or at least that is what the gauges were indicating. Pulling a heavy horse trailer the gauge spiked to 245 with a dash warning. Before I could get pulled over the gauge returned to normal operating temp. I pulled over and found the overfill was full.While the cause might not be apparent, it is worth correcting the problem to protect your vehicle. 1. Too Much Coolant. The most obvious cause of an overflowing coolant reservoir is too much coolant. The system works with a specific amount of coolant, and having too much can cause the reservoir to overflow. 2.The liquid within a vehicle’s cooling system should be a 50/50 mixture of coolant and water. This mixture is designed to prevent overheating and corrosion. When a car runs on water...Radiator boiling/engine not overheating. I have a '12 Wrangler JK with 88k miles. Had the radiator flushed 15-20k miles ago, which started this problem again. Coolant empties in 3-7 days, but temp gauge reads normal. Happening whether I run the a/c or not, but happening more this summer.Fill the radiator with a 50/50 mix of water and coolant. You can usually find this mix at auto parts stores. Screw the radiator cap back on and start the engine. Let it run for a few minutes, then turn it off and let the car cool down again. Check the level of the coolant in the radiator and add more if necessary.Coolant Reservoir - Random Issue. 2104 Silverado, had the truck about 8 months now. Randomly, the 2-part coolant reservoir will fill the right side, causing the left side to run low, i get a "Low Coolant" warning on the DIC. Top it up, then it blows coolant out the overflow until the same "low coolant" issue pops up again.A bad radiator cap can explain this. If the cap opens at a lower pressure than what the cooling system is rated at then coolant will be released through the overflow tube once that pressure is achieved, which it will under normal operation. I would test/replace the radiator cap and see if that remedies the symptoms.Last week: Car blew a coolant line, replaced it, added coolant and it was fine for a few days and then all of a sudden the coolant was gone. It looked like it came out the overflow. The tank would no longer hold pressure. Replaced the tank, drove it and a different coolant line broke. Fixed that, now the overheating. The issue of coolant being blown out through the overflow but no overheating is commonly caused by a faulty radiator cap or a clogged cooling system. This can lead to excessive pressure build-up resulting in coolant being forced out of the overflow. It is important to check and replace the radiator cap and ensure that … 24125 posts · Joined 2012. #2 · Feb 4, 2019. It's air in the coolant lines from changing the tank. It's nearly impossible to fill the Cruze's coolant and get all the air bubbles out so they work their way out as you drive. You'll need to put more coolant in in a few weeks simply to replace the air that's worked it's way out of the system..

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