Had a bit of a mishap on a rather long drive from Montana to Mich. #4
plug vibrated lose, burned the electrode off and obviously the engine
began running like crap. Checked the engine, found and replaced the
plug, still missing. Test of coil pack showed it was bad, so replaced
it, other cylinders (1 and 4 were missing in diag) 1 is now firing
fine, but 4 still has a miss.
Any thoughts. New wires and plugs (before leaving trip) i replaced all
plugs when I replaced the coil pack. Wires check out with about 6000
Could I have screwed up a valve in #4 when plug burned up?
Check engine light flashing once car is hot.
any help appreciated.
I don't know what you mean by the electrode was burned off, but I can't
help but wonder if there are parts of the electrode still in the
cylinder. I really doubt the parts messed up the valves. But, if there
are parts in the cylinder, something may have been messed up, like the
cylinder walls, piston rings or piston.
1) Don't drive the car until you know what is wrong and it is fixed.
When the check engine light is flashing, that means fix it now or
serious engine damage could result.
2) If the check engine light is lit (or flashing), there are OBDII codes
that you can download. After you have it towed to the mechanic, have the
mechanic download the codes. This should give you a lot of clues about
what is going on.
As far as the codes Jeff, I did do the OBD diags on it and it was
missing in cylinders 1 and 4 - no other codes.
Next was as Kruse suggests, check the compression to see if I have
leaking or blow-by.
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