1996 Ford Mustang Engine Misfires

1996 FORD MUSTANG
149,000 MILES • 6 CYL • 2WD • AUTOMATIC
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HOTRODT88
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  • 1 POST
engine misfires on #2 & #5 cylinders randomly. Spark plugs, wires, coil pack, 2 injectors, camshaft & crank position sensors, & computer have been changed. A compression test has been performed & all cykinders are 125 psi or greater. Checked valve springs & pushrods on all cylinders. I have replaced the new parts as some might have been defective with no improvement in driveability. I have performed an engine diagnostics through OBD II port and it will show misfire on #2 or #5 every time. Has anyone ran into this problem???
Jun 26, 2009 at 9:01 AM
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RASMATAZ
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Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Jun 27, 2009 at 7:04 AM
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LS WHAT
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^^^^^^^^ and also O2 sensors
Jun 29, 2009 at 4:58 AM
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