How to test for a bad fuel injector?
Registered User
Joined: Oct 2001
Posts: 368
From: Cincinnati, Ohio
Unplug each injector (one at a time) with the engine running and check for a difference in idle. If idle does not change when you unplug one, that injector is not working. Make sure that you check the wire going to that cylinder also (if you find a bad one).
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