Finally got around to doing a compression test on my 91 crx si with sohc zc engine. I went to auto zone and bought a timing light, stethescope, and compression tester. My problem was that the car was bogging pretty bad and smoking at times. Timing checked out ok as far as I could tell, and the injectors were ticking. Heres my compression #s.

CYL. 1 150
CYL. 2 145
CYL. 3 135
CYL. 4 175

I think what happened was when the guy who had the car before me bought the engine, he failed to drain the oil that came in the motor, and added 3 and a half quarts. When I bought the car, it had 7 quarts in it. Im guessing he blew the valve seals when he tried to drive it like that. So I guess what Im asking is, would this be a fix that I could do im my garage, or would I need to take it somewhere? What tools would I need? Im fairly mechanically inclined, Ive done swaps and the like, and I have lots of tools. Just curiouse if anyone has done this themselves? TIA

 

lol that blows, I also bought my sohc zc and it came with probably close to 6 quarts

Threw 180 across the board on a compression test though

 

Yeah, but it probable didnt get driven like this one did with that much oil in it. Ever replaced valve seals in a motor yourself?

 

pull the head off in the garage and take it somewhere to get it fixed and checked out

 

That loss of compression is bad. From those numbers, I would suggest what others have already said, "take it off, and examine it." My boy thinks you may have to re-build the head.

 

Well, i redid the test, and by putting oil in the cylinders, I was able to bring the #s up. This is starting to sound like bad rings to me. Im going to leave the engine in there so that I can move the car around while im waiting for another engine. Once i get another engine, I will pul this one and tear into it. Thanks for the replies guys.