Question about 2001 Mitsubishi Eclipse

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My 2003 mitsibishi exclipse has a bad miss. plugs and wires have been changed, heads are good, what else could it be?

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It is possible it could be a fuel inj, codes? if not will have do to a cyl power test to determine which cyl is not pulling its weight"

Posted on Apr 16, 2011


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I changed the head gasket repaced the plugs and wires and now ite starts but misses on number 2 cylender

Bad plug, bad coil, wire could be arching down if it is touching anything else, could be a shawty head gasket change and was damaged on the head install, was the head resurfaced and cleaned properly,

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# cylinder 3 misfire

you don`t say how you verified that the plug and wire was good. I think these use coil on plug, if so check powers and grounds for that coil as one may have a problem.other things that could cause this is a bad fuel injector, poor compression due to either rings, valve, worn cam, damaged push rod,

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My 97 expedition has a miss fire. was told by canadian tire that it was something wrong with the engine, meaning it was no longer any good. i changed the coils and the wires as well as the plugs, the...

First off, I would get a second opinion (and not put alot of faith in C/T) I would get the cooling system pressure tested & checked for leaks internal & external to eliminate bad head gasket or cracked coolant passage way. (If it had an internal leak - plugs would be wet and you would see white smoke from exhaust) RE; miss - run a really good/strong fuel system cleaner through it (Seafoam,STP, Gumout) and then change fuel filter.

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Missing at 45mph and 65mph changed spark plugs and ignition coils.

Did you change the spark plug wires? Could have a bad spark plug wire.

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I am trying to change the plugs on 2003 E350 Ford van

you have to remove the engine shroud inside the the passenger compartment. its the cover between the 2 front seats, it covers the back 1/2 of the engine once its off you can see the entire engine almost

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My 2003 ford focus has strated to misse and when i pop the hood one of the plugs seem to have lumped up oil is good waterit good help i kost when it comes to cars

The best bet is to take a torch or file to the plug. Never use water to wash. It could cause internal engine damage. If it is getting oil fouled, then the plug is bad or the plug wire is bad.

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'97 A4 1.8T, coolant leak resulted in brief overheat,leak fixed,diag.code now shows #2 cyl.missing (badly), compression good,injectors good,coils/plugs good,missing badly,could the brief overheat have

did the car over heat for long?
there could possibly be damage to your head like warping due to overheating and blowing a head gasket or something along those lines .
first check the oil dipstick is it milky?
then check the coolant is it oily?
and when it is running is it blowing any white smoke?
if you replaced the plugs and it is misfiring did you plug the wire all the way back on the plugs if not then the problem is a plug wire being loose and loosing connection with the plug.
sounds like a simple fix if you don't have water in your oil or white smoke coming out the exhaust.
troubleshooting it can be a bigger job but if you nail the right symptoms down you can corner the problem.
like if it is a coil pack or bad wire switch them with another one and see if the problem follows the wire or coil pack.for instance take the number one plug wire off and the number two wire off and put the number one wire on number two and see if the number one misfires. if so then the wire is the problem if not then try numbers three and four until you find out which cylinder is the culprit.
good luck and happy hunting.

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