#55178, "Overflow tank is bubbling and burping..."
after some hard runs and a 4 minute cool down, I popped the hood and can hear my overflow tank bubbling. Went to touch it and felt it burping. Was just wandering if anyone else's car was doing that too.
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#55221, "RE: Overflow tank is bubbling and burping..." In response to Reply # 4
the over flow tank is the little platic tank to the passenger side of your car. It has a little tube running from your upper rasitor hose/thermostat housing to its top.
Ok a tip passed on to me is to let it idle an feel the upper radiator hose for any pulses... your palm is more sensitive for this, oh and yes make sure the hose is cool...
have you changed your thermostat lately? hows the coolant? its level? what radiator cap are you using? hows the radiator..? the sensors?
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#55236, "RE: Overflow tank is bubbling and burping..." In response to Reply # 5
I hope it's not the headgasket. I have the mls one that I put in when I did my rebuild a year ago. Anyways I just checked the overflow tank and it's almost empty. I guess this is a good thing.
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"Tell them of us and say, For their tomorrow, We gave our today." -- The Kohima Epitaph
#55261, "RE: Overflow tank is bubbling and burping..." In response to Reply # 8
Mine was doing the same thing......only on hard third or fourth gear pulls. I could rip first and second gear all day long, but as soon as I would hammer it up top......bubbling coolant and overheating. Turned out it was my head gasket But thats fixed now.
#55304, "RE: Overflow tank is bubbling and burping..." In response to Reply # 9
Mine does the same thing. 3rd and 4th gear boosting boils the coolant and kicks a quart of it out the overflow. The rest just sits in the reservoir and boils. Also get surging in the water lines on warm startups.
- No oil or coolant mixing anywhere - Greddy 18psi radiator cap - Just rebuit 6 months ago - Brand new OEM thermostat - 4 layer MLS head gasket with mopar gasket spray - Good condition radiator - Reused waterpump, currently 75k miles on it
Refilling the radiator several times in a row seems to fix it for a few days until enough air is in the system that it starts boiling again.
#55317, "RE: Overflow tank is bubbling and burping..." In response to Reply # 10
I would hate for it to be the headgasket. That'll be a whole day lost again to changing the headgasket. I thought the mls would withstand this kind of thing.
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"Tell them of us and say, For their tomorrow, We gave our today." -- The Kohima Epitaph
#55321, "RE: Overflow tank is bubbling and burping..." In response to Reply # 12
it could also be that when doing too much consecutive boosting and not enough cool down time, that it's too much overload for our sucky radiators to handle. once you get an alluminum radiator like a fluidyne or something like that, it'll cool a lot better. also you might want to wire both a/c and radiator fans to turn on together to help cool better or turn on your A/c on after boosted runs.
#55349, "RE: Overflow tank is bubbling and burping..." In response to Reply # 13
Headgaskets seperate four things: atmosphere, coolant, oil, and combustion. Blowing the headgasket can introduce any two of these things, or more. I would suggest a compression test and a leakdown test to confirm or deny HG issues. If the leakdown test pressurizes the cooling system, then the head gasket is suspect at best. Best of luck, -=B-=
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#55363, "RE: Overflow tank is bubbling and burping..." In response to Reply # 14
You said your overflow tank always ends up empty? if so, that is NOT good. you dont want it to be constantly getting empty. Bad as it is, it sounds to me like your HG is on the way out. sorry man, and i really hope im wrong. 1999 Black C5 1997 Silver RS Wiseco 8.8:1 Pistons(back to low compression!) Eagle Rods T3/T4 Turbo Custom FMIC Greddy Exhaust 440's Most current 1/8th mile time: 8.3@90mph 2.015 60'(Nitto Drag radials, i suck)
#55386, "RE: Overflow tank is bubbling and burping..." In response to Reply # 15
OK, I finally got my computer back, now I can start posting again Anyway, most of the symptons described are what I've had for the last month or so. I also checked and/or replaced the thermostat, upgrade to a Fluidyne radiator, water temp sensor, did compression test, looked for visible oil/coolant--all good. I haven't done a leakdown test, but I suspect it's the headgasket. What's worse with my situation is, a lot of engine oil recently leaked from my exhaust camshaft seal--this was after a 22-23 psi run one night. It sucks, but I will probably have to change the head gasket and other seal
___________ Kon C
"Sometimes, a man has to do what a man has to do."
#55469, "RE: Overflow tank is bubbling and burping..." In response to Reply # 18
Man, now I'm scare to do a compression test. I have this feeling, that I'm gonna be owned! Dammit, classes just started yesterday too. It's school season, this is not suppose to happen now.
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But thats fixed now.
