Quote:
Originally Posted by DWBOX2000
My friends 99 986 Base engine light is on. He took to indie, dropped a grand and light still on. Says it is running lean but can’t locate. Smoked looking for leak.
The codes I’m getting are:
P0300
P0304
P0305
P0306
P1316
P1317
P1318
P1319
All misfire related damaging to CAt and emission relevant. Anyone have any suggestions besides new mechanic. Already there.
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Going on just codes with no other information.
Those codes are all on the same cylinder bank so it is unlikely a lean condition.
How old are the plugs and coil packs.?
Have they been looked at or changed since the issue started?
What recent work has been done on it??
How many miles?
Going on just the limited information in your post.
I would suspect an issue with the plugs the coil packs or the wiring to the coil packs.
Those are the three things I would check, test and verify as good before anything else.