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Santos
Santos 3/23/2011
1999 Jeep Grand Cherokee Limited 6Cyl4.0L - Engine
my jeep backfires when cold.
when i dont run the car for an hour or two,the car backfires until it warms up. it happens all the time now after it has been off for more than an hour.
1 Answer
  • Nissan Technical Advisor
    Check the condition of spark plugs and replace if worn. Also have a cylinder compression and diagnose the engine for trouble codes.
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