Originally Posted by technologic80
I just want to bang my head against a brick wall!!
My last few threads were about the sub-frame mounts rotting, I did get that all buttoned up and everything is good there now.
BUT my Dad just called me (mind you, the car has sat for a few weeks at a time). The last he drove the car it was sputtering. We figured bad gas from sitting.
Nope!! The upper intake gasket is leaking coolant now... just our luck.
How difficult is it to replace the upper intake gasket?
I can do it in 40 minutes from start to finish. unbolt the throttle body from the bottom and upper bracket, remove the fuel rail with the injectors still on it and set it off to the side, and unbolt the plenum.
If its leaking though, it could be a warped plenum if you have the plastic one. It happened on my L27 and I've heard it happen to other people. Your options are to replace it with an aluminum plenum from a junkyard, replace the gasket and hope for the best (didn't work for me), or tap two threads into throttle body coolant passages and screw in some headless bolts to plug them up. You can get them from any hardware store, and they permanently fix your coolant leak.
Here are the holes you would need to plug up:
You would use a pipe plug bolt, which looks like this:
2005 Pontiac Bonneville GXP - For Sale ----- 1995 Buick Regal GS(X) - L67 madness
2000 Buick Regal GSE - Stock...for now
----- 1987 Jaguar XJ-* V12 - 12>8