2003 Mitsubishi Galant Rough idle/ hesitation

2003 MITSUBISHI GALANT
90,000 MILES • 4 CYL • FWD • AUTOMATIC
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OVERMANBRATS
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I have 2003 galant it recently began to hesitate when I t depress on the accelerator. If I let off the gas & gradually press it down it will smooth out. I can stay at a steady speed with no problem. Once I decelerate, the hesitation will come back when I press the accelerator again.
When at idle in drive, it will sometimes idle at around 500rpms.

I have changed the plugs, coil, valve cover gasket & spark plug gaskets.
When hooked up to the code reader, I reads misfire in cylinder 2.
What else could it be
Mar 22, 2010 at 4:23 PM
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2CARPRO JACK
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Since it comes and goes, I would look towards a bad injector.Pull the plug on #2 and see if it is lighter in color than #3 or #4.Look for any vacuum leaks that could be traced right to the intake runner on #2 as well.It really sounds like a bad injector though
Mar 22, 2010 at 8:44 PM
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OVERMANBRATS
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the #4 plug was very dirty, they were all replaced about 3 weeks ago. The problem went away for about 1 day.
It is getting worse & worse though.
I pulled injector 1 & 2, and tried to blow both of them out, but it didn't help
Mar 22, 2010 at 8:53 PM
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2CARPRO JACK
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Blowing them out wont help.Try swapping the #2 injector with another one to see if the miss follows it.Then you will know if that is the problem
Mar 22, 2010 at 9:14 PM