Foam in coolant tank

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This website uses cookies for functionality, analytics and advertising purposes as described in our Privacy Policy. If you agree to our use of cookies, please continue to use our site. Or Learn more Continue. General [M]ayhem. General [M]ayhem User generated reviews, tutorials, and content. Share Share with:. Link: Copy link. I checked the coolant overflow tank and theres a bunch of whitish yellowish foam in there.

Bubbles were coming up when I checked. I'm working on getting a pic, but in the mean time, does anyone know whats going on? Full blown head gasket im afraid. A: Foam in coolant is usually the sign of trapped air in the system, a leak on the suction side of the water pump, an improperly functioning water pump, low or no coolant in the coolant recovery tank, the lack of a coolant recovery system, the coolant system lack of appropriate SCA's or the combining of incompatible chemicals in the coolant system.

GORK wrote: Full blown head gasket im afraid. G[h]EttOrAiD; wrote: dipstick is clean, only has oil on it. Would I notice coolant ouf of the exhaust? Read more posts 17 remaining. Back to top. OK Join. Choose Display Mode Original Dark.By metalmonkey47July 23, in Engine. I was wrenching on my Weber this morning trying to get the truck running after a bout of the usual 'shit in the jets' problems I had last night.

Now I've been noticing for some time that I've been getting bubbling that sounded like it was coming from the gas tank whenever I shut off the truck after a long drive.

Welp, heard it again. Turns out, it's coming from the radiator. I opened the cap and I have a fuck ton of foam in the radiator. Question is: What causes this?

foam in coolant tank

I found PSI on cyl 1, and averaged on 2,3,4. However, this was also the first compression test and the motor has less then miles on it yet, and hasn't been giving me many issues at all. Most were carb related. It's highly possible that the rings haven't fully seated on cyl 1. With that said, it was overheating at one point, if you recall it was because if carb jetting being wayyyyy too lean.

That's been fixed. I've done a little reading and there are tons of theories out there from coolant contamination, etc.

I'm actually not running a t-stat at the moment either. I suppose I need to go toss my back in. Just gotta get a timing chain first since we re-used the old one. Kit we had was for the wrong motor. If you have the H gasket and plan to change the chain then do this. This will eliminate a bad gasket and a lot of time worrying about it.

Always run a thermostat it speeds the time it takes to warm the motor up, and a motor runs best and lasts longer when it's at operating temperature. Have you bleed the cooling system?If your car insurance is due within the next 30 days, please don't forget to give our club sponsors, Chris Knott Insurance, a call.

They have just confirmed a record week in terms of the amount of business they have done through the forums so it's certainly worth a call. Inthe average recorded saving for their new customers was Remember Me? What's New? Results 1 to 7 of 7.

Thread: White foam in coolant tank. Thread Tools Show Printable Version. Mentioned 0 Post s Tagged 0 Thread s. White foam in coolant tank White non oily foam is forming in the coolant bottle.

Head gasket or something else? Vehicle : Signum Engine : 20 Dti. Didn't notice any pressure when I opened the tank, just a quiet hiss. Is there any water dropplets on the oil dip stick. From the sound of it the head gasket has gone. Also is there an excesive amount of "steam" coming out of the exhaust.

Coolant in overflow tank is foaming up, engine temp is rather high, danger to manifol

Vehicle : Bmw d Trim : Msport Engine : 3. The oil is fine and there is no excessive white smoke.

foam in coolant tank

It starts ok and goes well. It's a manual so the only oil cooler it's got is the engine oil cooler. Will make the dealer flush the cooling system, as there is also a grinding noise coming from the belt area and I suspect a faulty water pump.

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The time now is Extra Tabs by vBulletin Hispano.Almost all automotive vehicles use a closed-loop, liquid cooling system. The water pump circulates coolant through the cooling tubes of the radiator, where it cools and travels through the engine passages and hoses. Coolant, or antifreeze, is designed to flow smoothly through all of the cooling passages, with no air blockages. A thermostat opens and closes to regulate the coolant flow for engine warm-up and circulation.

Air bubbles in the coolant, at the radiator or expansion reservoir, means air has entered the system at some point. This can lead to overheating. A radiator cap functions as a pressure seal, and keeps the cooling system pressure raised.

foam in coolant tank

It also allows pressure and coolant to vent back to the expansion overflow reservoir. A malfunctioning radiator cap seal can allow air to enter the system, often producing bubbles in the expansion reservoir.

White Foam/Froth in coolant?

Air pockets in the cooling system usually result from an improper flushing procedure or partial or incomplete radiator fill-up. Air pockets causes a lower coolant volume, often leading to higher than normal operating temperatures. Air will be seen bubbling from the radiator inlet neck or inside the expansion reservoir. Thermostats must open fully to allow full coolant flow during normal driving conditions, or must close to allow rapid coolant heating for cold engine start-up.

The thermostat mechanism can jam open or closed, leading to under-cooling or overheating, respectively. A faulty thermostat that causes sporadic opening and closing can cause a churning and bubbling effect seen in the radiator or expansion reservoir. The rapid closing and opening of the thermostat valve can also cause a pounding noise inside the radiator, due to the slamming pulses of coolant.

The heater control valve allows hot coolant to enter the heater core, for the purpose of heating the passenger compartment. A heater control valve with a bad seal at the valve end, or a loose heater hose connection, will allow air into the system. The hose connecting the radiator and the expansion reservoir must be leak-tight at the clamp connections. The hose can not be split or leaking. Air can enter the hose and produce bubbling inside the expansion reservoir.

A failed water pump seal will allow air to enter the intake or suction side of the pump.A3 T Jun 29, Log in or Sign up. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More. Dismiss Notice.

Cookies Snack. Foam In Coolant?? As some of you know I've just changed my thermostat When i fill up the coolant and let the engine runI noticed that there was a lot of bubbles in the expansion tank, i thought that these will just be caused by the trapped air in the system. Today i thought i would check the coolant level and it seem like its just the same if not a bit worse.

Any ideas? A3 TJun 29, Have you looked on the bottom of your oil cap 2 see if it's White with gunk as that looks likes oil in the water too me. G60DANJun 29, Yeah that does look like oil in your water Bad news if it is Head Gasket! Does it smell funny?? Get some on your fingers.

Thanks guys I thought head gasket at first I also just went out to the car and it just smells like coolant and if i dip my finger in the foam and rub it between my fingers it just turns to nothing with no sludgy feeling coolant cap just a bit of foam on it : Oil cap just a bit of thick oil : Why would something as simple as a thermostat change cause this.Forum Rules.

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Losing coolant and foaming at radiator filler neck!?

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Oil In Coolant "What to Check when you find Oil in Antifreeze"

Results 1 to 15 of Thread: Coolant Foaming up. Thread Tools Show Printable Version. Coolant Foaming up Hello good sirs. I am a new machinist and do not have any experience in machine maintenance or coolant. I just landed this job and was thrown into the mix when the senior machinist here quit a couple days after I started, leaving me to run things in the interem.

So here is the deal. Is this bad? If it is how do I stop it from happening? I am mixing the coolant to a 7 on the refractometer according to the Hangsterfers website.

Any help would be greatly appreciated. Typically coolant will start foaming when it becomes more concentrated, especially in warmer weather. Coolant is essencially soap-like in chemical structure Keep in mind that when the charge Coolant in the machine evaporates. If you add the original mixture to the charge, it will become more and more concentrated, exasperating the problem!!

Try adding a little water to the charge.I drive a Saturn SL2, 5 speed. My engine overheating warning light keeps coming on even though the temperature gauge is reading normal and stable. Also — i have recently noticed that there is foam in my coolant. Two questions: 1 Is the foaming coolant something to be concerned about? Not good. Your combustion gasses are blowing through a breech in your headgasket and 1 heating the coolant in the water jacket 2 foaming your coolant.

But in the months since I got the system flushed I have not had any overheating warning lights. I will talk to the mechanic about the coolant flush foaming connection, but wanted to get honest opinions before going in there. And the pump is still bad. S-belt is fine — they checked it. Also — to clarify the warning light — it sometimes will turn on for only short few seconds then go off again.

Which is why i originally thought it was just a sensor that was acting up. Sounds to me like the cooling flush had nothing to do with the problem.

foam in coolant tank

Unfortunately you did not catch the overheating in time, and the head gasket is now blown. Sorry to be the bearer of bad news. You should get a hydrocarbon test in the reservoir tank to check for exhaust gases in the antifreeze. If there are exhaust gases in the antifreeze would that be indicative of the blown head gasket?

The only problems that Saturn had with the head that was chronic was the SOHC head had a tendency to crack. The DOHC head was very reliable.

The coolant light can serve up to the three functions. If you have an automatic, if it is on steady it can mean either engine coolant temp over heat or transmission fluid overheat. If it is flashing, it means the coolant level is low. This is the function of a level sensor in the coolant resivoir. Before I start to tear anything apart, I would do as a previous post suggested and test for combustion gasses in the coolant. There are MANY members who have a lot of experience with Saturns and are very willing to share their expertise.

It is www. And yes, the S series cars use a timing chain not a timing belt.

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