Question about Mitsubishi Galant
It can still be fuel injectors dirty or partially plugged,and injectors also can deteriorate electrically,fuel supply,check with a gauge at the rail.Have also seen catalytic convertors stop up in the exhaust system,causing misifires and misfire codes,and also on a specific Mitsubishi truck,the powertrain control module,aka vehicle computer was bad,causing a misfire specifically on one cylinder.Then there are the mechanical causes that can be eliminated by performing a compression test for piston rings and valves,and a leakdown test that more specifically tests the intake and exhaust valve's sealing ability.Have also seen a bent rod on a running Ford engine cause a misfire,but that showed up on the compression test as that cylinder's compression was much lower than the other 5.
Posted on Aug 29, 2008
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