Mechanics

MISSFIRE CYLINDER #1

2000 Cadillac Escalade

Engine Performance problem
2000 Cadillac Escalade V8 Four Wheel Drive Automatic 87000 miles

I have a code of PO301 (missfire cyl. 1) I have changed the plugs, wires, cap & rotor, PCV valve & it stills runs a little rough & I still get the code after I clear it. What else can I do to make it run right?
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Spankyfree
March 7, 2008.




Most common for a misfire is spark plug and the ignition system
but that s not the only cause
check fuel injector and compression
vacuum leaks too
on GM injectors may be at fault

BMRFIXIT
Mar 7, 2008.
Also the coil pack on the valve cover, thats probally it
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Tiny
Buzzsaw
Mar 7, 2008.

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