Misfiring problems

2005 JEEP LIBERTY
121,000 MILES • 4 CYL • 2WD • MANUAL
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DARTER180
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  • 1 POST
My Jeep Liberty keeps miss firing in n
#1 and #2. I have already changed the spark plugs, wires, coil and ran injector cleaner through including techtron in the tank. Had the check engine light checked many times. still misfiring. What next?
Jun 2, 2011 at 10:45 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Is there a driveability issue? Can you feel the misfire? Do a compression test on all cylinders, see how #1 and #2 compare to the others?

Do you have an injector pulse on those two cylinders?
Jun 3, 2011 at 3:08 AM
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