[fallingat120mph]

1986 with 200,000 miles on it.

Broken head stud and some oil leaks is where I am now...oil leak looks like a bad seated oil return tube I installed and will be addressed.

Being a long weekend I wanted to break out my new OTC Cylinder Leakage Tester.

So, after taking the 911 up the highway getting it warmed up performed the test...

My results (at 80psi) were: ((pretty sure the math is right))

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#1 76 5%
#6 76 5%
#2 76 5%
#4 72 10%
#3 76 5%
#5 71 11% (was 72 on second test)


The biggest issue was being in Texas and trying to single out where I was hearing any air being forced out - the fireworks have started and it is 100 degrees in the garage - so may repeat in the quiet hours of the early morning.

Also, the car has been sitting for a month or so and tried to take it out to get warmed up but I am still nervous taking plugs out/putting plugs in a very hot engine. Not sure I got the engine hot enough...?

The broken head stud is the major issue and don't think these numbers look too bad?

It seems I might need to get out and drive it hard, since it's been sitting - Italian tune up as some of you say...and then check again.

Any input or opinions are appreciated. Just curious if these numbers are a major concern on a car with 200,000 miles on it. Trying to learn as much as I can before I drop the engine to address the head stud issue this fall...


Thanks!
Erik