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2000 Cadillac Escalade Missfire cylinder #1

Tiny
SPANKYFREE
  • MEMBER
  • 2000 CADILLAC ESCALADE
  • V8
  • 4WD
  • AUTOMATIC
  • 87,000 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?
Friday, March 7th, 2008 AT 5:03 AM

2 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
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
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Friday, March 7th, 2008 AT 6:08 AM
Tiny
BUZZSAW
  • MECHANIC
  • 1,198 POSTS
Also the coil pack on the valve cover, thats probally it
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Friday, March 7th, 2008 AT 2:53 PM

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