So my second cylinder misfires.its a Mitsubishi lancer es 2002. the thing is i took it to a mechanic and he took a look and said the spark plugs were cheap and i needed the expensive ones. so he replaced those and checked my fuel injectors, compression, distributors and their caps as well as the coil packs and said they were all good. by the way replacing the spark plugs only fixed the problem temporarily. there is something causing the plug to misfire, and its only and always the second cylinder.
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Re: cylinder 2 misfire
One often overlooked item is the spark plug leads themselves! They don't last forever - Some start breaking down internally after only a couple of years, and although you still get a spark at the plug, it is not a very healthy spark.
If they haven't been changed, it is well worth giving it a go.
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code p 0300 determines misfire causes as the following=== causes --engine mechanical fault ---wiring---ignition/ fuel system---injector ---ECT/MAF sensor--- ECM
You have two areas to check
one is the MAF sensor as it will cause erratic idling and second the injector or HT leads to a plug
If you run the fault codes you will get a p 0301or 2 or3 or 4 code and that is the cylinder number that is misfiring--code p 0300 is random /multiple misfires and the causes are the same including low fuel pressure and low compression
It is obvious if it overheats that 2 things take place First you stop using it immediately & second have the overheating issue diagnosed & fixed Then the power issue may be gone If you only drive a car for years until things happen , your asking for problems & a short lived life for the car Maybe the timing belt has been neglected & jumped a couple teeth The car may have not had a happy life & ran with cylinder misfires or a rich fuel condition & ruined the exhaust converter & it is blocked
you have to see if the coil pack fire up do you have spark coming out of the coil pack cylinder 2 never mind the other code the missing cylinder make the other sensor malfonction check if you have spark coming out of the coil pack if not change the coil pack if you have you spark check the compression let me know pierre please dont rate right away we work together to fix our problem because i whant you to get our car running good and i whant a fixya anything else is bad for me thanks pierre
before anything i had the problem and this is the way i solved it ... the lancer has 2 ignition coils in 2 cylinders what you do is take the iginition coil out of the cylinder that is misfiring and change it to another cylinder and put the car on the odb reader again it should change location of misfire .. then that would tell you that its the ignition coil thats bad i ended up getting my coil at the dealer for $110 ebay has some aftermarket pairs for $100 so you can get 2 now for the price i paid for 1 that will solve the problem guaranteed owne d a lancer for 5 years know the ups and downs to them