2000 Cadillac Escalade Missfire cylinder #1

2000 CADILLAC ESCALADE
87,000 MILES • V8 • 4WD • AUTOMATIC
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SPANKYFREE
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  • 2 POSTS
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 ?
Mar 6, 2008 at 9:03 PM
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BMRFIXIT
  • ✓Experienced 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
Mar 6, 2008 at 10:08 PM
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BUZZSAW
  • ✓Experienced Mechanic
  • 1,198 POSTS
[quote:d67077ab70="Spankyfree"]Engine Performance problem
2000 Cadillac Escalade V8 Four Wheel Drive Automatic 87000 miles
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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 ?[/quote:d67077ab70]

also the coil pack on the valve cover, thats probally it
Mar 7, 2008 at 6:53 AM
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