MISSFIRE CYLINDER #1

2000 Cadillac Escalade

Tiny

Spankyfree

March, 7, 2008 AT 5:03 AM

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?

FOUND 335 RELATED QUESTIONS

2 Answers

Tiny

BMRFIXIT

March, 7, 2008 AT 6:08 AM

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

Tiny

Buzzsaw

March, 7, 2008 AT 2:53 PM

Also the coil pack on the valve cover, thats probally it

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