This has been a constant battle with my 85 pickup 22r. Three years ago i tried to get the thing to pass to no avail. The only thing that helped was doing a valve clearance adjustmen. I did the same thing yesterday to try and remedy the problem ( excessive CO emissions on high RPM) along with an air cleaner, spark plugs, cap, rotor, and oil change. AND it actually got worse!!! Now it sounds like one of my valves is knocking, and im no farther along in getting the thing to pass than i was before. Does anyone have any suggestions?
- posted
19 years ago