Compression tests out at 0 on number 4??????WTF??
 

Well, I did a compression test tonight on the CRX results were 160, 155, 150, 0 the first time and 165, 155, 150, 0 the second time and 160, 155, 150, 0 the third time. Obviously something is fucked in number 4. My big question is after the car took a ---- we still had to drive 15ish miles on it to get it back into town and we NEVER got any smoke from the exhaust, what does anyone think this is?

Re: Compression tests out at 0 on number 4??????WTF??
 

Bought my car with engine problems. Compression was 170ish across every cylinder except for number 3. Number 3 had 0 psi. Number 3 cylinder exhaust valve also had a giant chunk missing from it. The car didn't smoke at all, just idle'd like piss as far as I remember. So my vote is something just ain't sittying pretty valve wise, and the only way to know for sure is to pull the head :)

Re: Compression tests out at 0 on number 4??????WTF??
 

bent valve probably...shows no compression cause it all leaks out ;)

Re: Compression tests out at 0 on number 4??????WTF??
 

These replys make me happy!!!!! Now I have more reason to get off my ass and do the mini-me (with my freshly rebuilt head that was going to go in this winter). ;D

Re: Compression tests out at 0 on number 4??????WTF??
 

get off yer ass you lazy. O0
sorry about the 0, good luck on the mini-me.

Re: Compression tests out at 0 on number 4??????WTF??
 

Pull the head got some damage somewhere

Re: Compression tests out at 0 on number 4??????WTF??
 

yeah it could be a hole in a piston too, haha.

Re: Compression tests out at 0 on number 4??????WTF??
 

doubt it since there isnt any smoke

Re: Compression tests out at 0 on number 4??????WTF??
 

true...true...

Re: Compression tests out at 0 on number 4??????WTF??
 

when i did my test we didnt have the right rubber seal for the head.. so we got the closest one to fit.. haha.i was mid 120's.. which i understand is VERY LOW !.. but i also NEVER smoke unless im well into 5500rpm and up range.. i KNOW any smoke is bad.. but for 120's being so low why doesnt it smoke much and it still pulls hard..?.. either way smoke is smoke ! :-\ valve seals i hope n pray !