#4 Miss fire with clattering noise??

Asked by Mar 13, 2018 at 02:18 AM about the 2002 Mitsubishi Galant

Question type: Maintenance & Repair

So my check engine
light came on. Ran
code scanner said
coil. Replaced both
coils plugs wires air
filter and belts. reset
code. In no time light
came back on.
Reread code say #4
misfire. Pulled apart.
Looks good gap right
no oil no breaks but
Runs very rough
when in drive
idleing;hot or cold,
not in neutral. Seems
to run regular while
driving ( not when I
stop) but I have like a
clattering noise in
excelling like bad gas
or too much gas. 4
cyl 2.4 galant. My car
has 175000 miles.
My car has an
automatic
transmission.

1 Answer

293,345

Perform a cylinder pressure test and or a leak down test on all the cylinders. I suspect the valves might be an issue, especially since you have noise like you said.

Your Answer:

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