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Why would the piston second from the right not fire on a 92 Mitsubishi Eclipse GS?

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2011-09-13 17:24:02
2011-09-13 17:24:02

Check for fire and injector function. Check compression.

AnswerI have a 90 eclipse 1.8 sohc gs and my piston second from the right works one day but not the other. I told a mechanic this and checked it out and was baffled also. Potential problems where: piston ring broke, valve not opening all the way or closing all the way for no compression, fuel line, and somthing with the intake manifold to put a spray in it. I tried the spray and wasn't it, the piston ring is ok because the cylinder is working today. Mechanic held a sparkplug in it with a wrench and i started it up, it pushed the spark plug out so it had compression. The only thing was maybe fuel line, but i put those get gunk out bottles a couple times and problem still exhists. So the valve can be it, maybe it has too much carbon deposits for the exhaust one or camshaft is not opening it right. AnswerThis happened to my 1999 Mitsubishi eclipse and I think it is probably the same on your's. Advanced auto parts told me that cylinder 2 was misfiring. Spark plug was really burnt when I looked at it. Changed spark plug. Still misfired. Changed spark plug wires - PRESTO!.
  • The service engine light was still on, but I fixed that simply by unplugging the battery cable.
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