Your vehicle has a problem if the check engine light (CEL) glows. Diagnostic trouble codes (DTCs) stored in the computer help find the cause.

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The check engine light by its nature is vague, just a general indication that ...

This month we will be concentrating on diagnosing a clogged fuel injector using data from a can tool. Diagnosing a clogged injector is not always easy because the symptoms act similar to low ...

QHello. I have gotten myself into a bit of trouble with my computer controlled Quadrajet. My carburetor is running very rich, with black smoke coming out of the tailpipe. I removed the screw in the ...