Overheating Help (I'm stumped)
you should pull the spark plugs and see if any of them are clean from the coolant if in fact you do have a head gasket problem Thanks for everyone's suggestions, it's starting to look like a head gasket. I'm going to pick up a leakdown kit tomorrow. I haven't really been running the car hard lately beyond the occasional wot run, and don't see some of the other symptoms, but do seem to have more smoke than usual coming out of the exhaust (not a ton though), car has also seemed slightly sluggish off idle. Could this also be causing me to burn an excessive amount of oil (1 quart per 1000 miles)?
Thanks for everyone's suggestions, it's starting to look like a head gasket. I'm going to pick up a leakdown kit tomorrow. I haven't really been running the car hard lately beyond the occasional wot run, and don't see some of the other symptoms, but do seem to have more smoke than usual coming out of the exhaust (not a ton though), car has also seemed slightly sluggish off idle. Could this also be causing me to burn an excessive amount of oil (1 quart per 1000 miles)?
are whitish and clean, as compared to the other ones. That will be the cylinder where the gasket leak is. Either way, as I said before, there is only ONE way to get air into the system, bad head gaskets. And if coolant boils, air is getting in. Coolant is around 20psi when at operating temp, the only thing can can beat that is cylinder pressure pushing air into the coolant. Any other type of coolant system leak would have coolant squirting out of that leak onto the ground making a puddle somewhere or gettinmg into the crank case.
Let us know what the leakdown tells you.
Removing the heads isn't that bad either, did mine in the driveway with a friend in about 2-3 hours getting them off, then about 2-3 hours putting everything back together. Get the heads resurfaced for sure before putting them back on.
I'll keep you guys updated.
I'll keep you guys updated.Also, when you first start the engine in the morning when its bone cold you should get a little coolant spray out of the tail pipes. Because when you shut the engine off the coolant system is around 20psi, while the engine cools some coolant should seep into the cylinder where the gasket is blown and fill a little into the cylinder. When you first start it cold it should spray out onto the ground. Right after it starts give a little rev to get it through.
Also, when you first start the engine in the morning when its bone cold you should get a little coolant spray out of the tail pipes. Because when you shut the engine off the coolant system is around 20psi, while the engine cools some coolant should seep into the cylinder where the gasket is blown and fill a little into the cylinder. When you first start it cold it should spray out onto the ground. Right after it starts give a little rev to get it through.
The order of the plugs below from left to right are 1, 2, 7, 8
The order of the plugs below from left to right are 1, 2, 7, 8
The bubbles coming up in the radiator is a direct tell-tale sign of a blown head gasket.
Now the moisture coming out of the pipes is another good sign of blown gasket(s). But also remember, moisture can also form inside the pipes overnight depending on what kind of weather you have (like dew), so when you start it up that moisture blasts out the back too. If its enough you can smell the coolant if thats what it is.
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The bubbles coming up in the radiator is a direct tell-tale sign of a blown head gasket.
Now the moisture coming out of the pipes is another good sign of blown gasket(s). But also remember, moisture can also form inside the pipes overnight depending on what kind of weather you have (like dew), so when you start it up that moisture blasts out the back too. If its enough you can smell the coolant if thats what it is.
I didn't take pics of all the plugs cause 1,3,5 look alike and 7 was worse and then 2,4,6 look alike and 8 was a little different. I wouldn't say any of them looked "clean", just browner than others.
Here is what I did/figured out today.
-Exhaust has no smell of coolant (even put my face down there)
-Coolant has no bubbles when the engine is running at operating temp with cap off
-Pressure tested new and old caps, new one is fine, old one held no pressure
-I'm an idiot since I used the old cap last night after putting in the new pump
-I'm guessing the above reason is why the coolant boiled with the new pump
-Did compression test on 3,5,7 since I couldn't get to the others, they were 180,180,172 respectively
-Put in new plugs and let it idle/drove around for 40 min
The temp gauge stayed at 210 the whole time like it normally does. When I got home I left the car running and didn't hear or feel any boiling coolant, nor did any come out of the overflow.
I'm still not 100% sure it's fixed and haven't ruled out a head gasket problem yet. At least I think the compression test ruled out a drivers side head gasket. Everything appears ok now, except the burning oil. I suppose my problem could have been a bad cap and a failing pump. After putting in the new pump last night I immediately noticed better throttle response and power, maybe a sign the old one was going??? I'll put some more miles on it tomorrow and post an update.
Just a note. I also tried using the old cap and new pump...which did not work. New cap AND new pump was the only combo that fixed the problem.



