Coolant Blowing Out Of The Overflow
jetaws6 - So when you bought the car... the thermostat was normal and the needle pointed straight up? And then after your head swap, the needle started hanging around a lower temperature? That seems odd to me - I'd wonder if the coolant sensor might be bad and not triggering the fans to come on.
Wow - That's something to definitely check for! OMG.
jetaws6 - So when you bought the car... the thermostat was normal and the needle pointed straight up? And then after your head swap, the needle started hanging around a lower temperature? That seems odd to me - I'd wonder if the coolant sensor might be bad and not triggering the fans to come on.
jetaws6 - So when you bought the car... the thermostat was normal and the needle pointed straight up? And then after your head swap, the needle started hanging around a lower temperature? That seems odd to me - I'd wonder if the coolant sensor might be bad and not triggering the fans to come on.
I think I looked at that but I might have looked at the wrong thing. The crossover pipe on the heads is on the top fitting right below the rad cap and the overflow hose is on the one right below that?
hhow about when you shut the car off? does coolant come out of the over flow cap?
iirc..i had this problem when the car was turned off and the 2 hoses that go th the fittings on the radiator right below the radiator cap were on backwards...the overflow line goes to the upper fitting, the lower fitting goes to the engine steam pipe.
iirc..i had this problem when the car was turned off and the 2 hoses that go th the fittings on the radiator right below the radiator cap were on backwards...the overflow line goes to the upper fitting, the lower fitting goes to the engine steam pipe.
The coolant temp gauge on the 98's reads different from the 99+ cars - it will only be straight up at 200 or so. If you are running a low temp thermostat, it will always point to 10 or 11 o'clock.
-Geoff
-Geoff
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo My 10 bolt blew out the other day. I am going to pick up a t stat and change that while I am waiting for my mwc 9 to come. Is there a test that will show if there is indeed coolant in a cylinder?
Yes. There's a fluid that when is exposed to exhaust gas it Truns from blue to green. U can get it at Napa I think. Its going to be a kit I'll need to get to use it right. U can also fill her up and see if u get any bubbles comeing up. U could also pull ur plugs to see idk they have a white/green hase on them. If so u gota issue
If you are sure the head gaskets are good and holding pressure, its more likely that the temperature is rising in conjunction with your pressure spike.
When you pull over, are your radiator fans running? If they aren't kicking on when the system gets hot, that could be the cause of your issue.
When you pull over, are your radiator fans running? If they aren't kicking on when the system gets hot, that could be the cause of your issue.
I have had this problem for a little bit now and I cant think of the solution. It only happens at wot and it doesnt happen all of the time but when I get on it coolant flys out of the overflow all over that side of the engine bay. I have gone through 3 radiator caps and they seem to fix the problem for a little then they start losing pressure. Could it be coolant in a cylinder even though I am not blowing white smoke and my oil is clean? Or could it be something else?
You have a blown head gasket if you ask me. And Yes, sometimes the piston will push air into the cooling system on the upstroke (power stroke) ALLOT more than it gulps coolant on the downstroke. So blowing white smoke is not always present.
If you do the easier/free coolant system pressure check.......you still need to remove all 8 spark plugs in case a cylinder fills with coolant through the blown gasket leak. Make sure you don't start the car with coolant sitting in a cylinder. Turn the3 engine over for a few seconds with the3 plugs still out to get enough out so you don't hydralock the engine and damage internal parts.
.
.
If I did a pressure test on the coolant system though and left the spark plugs in and the coolant level stayed the same would that rule out the head gasket or would it still be a possibility?