how to troubleshoot a code P0302 on a 1999 Buick LeSabre
Injector may be dirty.
Check that injectors electrical connection (s). It may not be pulsing correctly or is clogged up. May also be a sign that you should have put a new fuel filter on.
If just lightly clogged a bottle of injection cleaner may clear it up but I would not count on it. You can have it tested and cleaned or watch youtube for details on how to do this yourself and how to rebuild them as o rings go bad too plus it has a tiny screen filter.
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