Technical Section

First of all, do yourself a couple favors. If you aren't familiar with how an engine works, don't work on it. Have a qualified mechanic do it. If you are familiar with how it works, don't fix something that is unrelated to your problem. For example: If the problem is that you can physically view (say, through a clear fuel filter) that gas is not going into your carb, then don't change the spark plugs expecting your fuel delivery problem to be fixed. It won't be.

Basic Trouble-Shooting Chart The complete chart for solving a carburetor related problem.

Smog Trouble-Shooting Chart The complete chart of smog problems.

Step-By-Step Smog Solutions Answer simple, step by step questions to help solve your smog problem.

Emissions Diagnostic Checklist Follow these steps to help diagnose your smog problem.

California Smog Law What does the California smog law really say? Is your car exempt or not?

Installation Instructions Simple instructions for installing your carburetor.

Idle Adjustment Instructions Once your carburetor is installed, consult this to set your idle mixture.

Shaft Clearance Facts Find out the truth about throttle shaft clearances and the myth of spraying carb cleaner on the shaft.

Q-jet OEM numbers An invaluable resource for decoding the information in the OEM number on your Rochester Quadra-jet carb.