I have a D15 that either has a bad ring or bad valve. I am going to do a compression test when I get a tester. I am wondering what I would need to do to fix this problem. I narrowed it down to the 2 cyl by removing plug wires while the CRX was running. Cyl 1 almost made the car die, with 3 and 4 also. It is fowling the spark plug right away. Am I missing something obvious? What is a sure tell sign that its the ring or valve, first time working on a honda engine. THANKS

 

Compression in all 4 cyl is around 175 psi so I know its not the rings or the valves... SO why would it feel like I'm running on 2 cyls? lol... I have checked spark and I am getting spark to all 4 cyls. I have checked my inkectors and all 4 are working fine.... anyone? I cant think of what it would be.

 

I say you do a cylinder leak down test...that would be a better test.
What kind of noise is it making?

 

Im going to replace the cap and rotar tonight and see if that makes a difference. Basically it is very sluggish when starting out, almost to the point where i would die if i didn't accelerate. its not making liffter or rod noise, no knocking. but almost like its on 3 cyl. so i dont know how to imitate the sound but bu bump bu bump bu bump.... lol till i give it gas. and then it accelrates very very slow. Full gas is really like half... very shakey when starting out too.

 

hhhmmm... i wouldnt be driving it till you figure out what it is.
Unless you like being stranded waitin for a tow truck.
Hows the oil? any smoke coming out of the tail pipe?

 

Just changed the oil last night, and its not smoking at all. After doing a few things I'm just test driving it up and down the block.

 

OK well from what i can tell, you might have a bad bearing, which is making that bump/thump sound. I saw you keep your eye on the oil level.