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3.1 liter engine, 1996 misfire on cylinder 3

\015 Running code scan get PO 303, misfire on cylinder 3, have checked coil pack and replaced spark plug wire, need possible other problems and checks to diagnose the problem.\015 Posted / edited by AnonymousUser on : 22-04-2019

Answers :

The code means that cylinder had no power at some point in time.
The most common reason is a faulty spark plug, but it could also be a faulty injector or low compression.
If you know the plug has spark, the next things to check are compression and fuel.
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