I have a stock 1974 Dart 318 LA engine with around 76,000 miles on it and it is a donor engine for my sons 1970 Dart. I did a compression test and came up with these results:
#1 = 105
#2 = 120
#3 = 0
#4 = 120
#5 = 110
#6 = 75
#7 = 110
#8 = 105
Surprisingly the engine does run.....not well but it runs. I did the test with the throttle closed. The donor car did sit for some time before I got it.
My question is: How can I tell if I have a head/valve problem or if the engine is tired and has some piston ring issues?
I'm sort of hoping that its a head/valve issue at this point.
Thank you for your help!
