Ok i went drag racing about a month ago and must have over-reved the motor by shifting into 2nd instead of 4th. The motor started ticking more than usual (haven't had a valve adjustment in a while) and it was throwing a CEL. I brought it home and pulled a CEL 73 which happens to be the infamous "cylinder 3 missfire"
Today i decided to check out the motor armed with a leak-down tester and a compression tester.
The leakdown on cylinder #3 came to show a 5% pressure decay and i couldn't hear any air leaking from anywhere except a very little around the sparkplug threads where the hose wasn't seated. The compression test registered at 190 psi for cylinder #3 while the other 3 cylinders registered around 195 psi.
As far as I can deduct the internals of cylinder #3 are pretty acceptable.
I also inspected the plugs and made sure the #3 plug was getting spark. The #3 sparked fine but with a orange tinge to the spark color.
I put it all together, cleared out the ECU and took it for a test drive. Same ticking and when I pulled into the driveway the CEL came back on again.
All signs point to a bent valve but the diagnostics don't really prove that, and I'd hate to pull the head to find out it was something else.
Can somebody please help, am I forgetting something?
Thanks in advance

 

up up up I really need some help here

 

what code is it??http://www.c-speedracing.com/faq/06.html

 

It's a shot in the dark, but a lot of Greddy turbo users get a code 7x if their injector seals are not sealing right. The Greddy kit comes with RC injectors that replace the stock injectors and the fit isn't quite the same.

Sonny

 

It's a code # 73 for an OBDII Integra, which is a "Cylinder #3 Missfire"

hmm i'll check the injectors tomorrow
Just picked up an automobile stethoscope (sp?) and I think i'm going deaf from listening to my motor for hours.


[Modified by Y2KGreenGSR, 8:09 PM 9/4/2002]