MY 3AMP4 CYLINDER ARENT FIRING WHY COULD THIS BE...

1995 Mitsubishi Eclipse

Tiny

driftkiller101

November, 12, 2012 AT 8:56 PM

My 3& 4 cylinder arent firing why could this be ive already replaced the coil pack, spark plugs, spark plug wires, fuel pump, I just seem to cant figure out what could be causeing this

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3 Answers

Tiny

KHLow2008

November, 13, 2012 AT 3:30 PM

Check the engine compression.
Check for vacuum leakages.
Do you have coolant losses and overheating issues?

Tiny

driftkiller101

November, 16, 2012 AT 12:12 AM

All good except it has a low compression on the 4th cylinder, I was guessin that the injectors are clogged or just the ecu isnt telling them to spray

Tiny

KHLow2008

November, 16, 2012 AT 11:30 AM

Low compression can result in misfiring. How much lower than others?

Guessing can be a waste of time and money. Test them to confirm. Try swapping the injectors.

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