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2003 Nissan X-Trail Engine Misfiring at Idle

Tiny
RACERS320
  • MEMBER
  • 2003 NISSAN X-TRAIL
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 84,000 MILES
After recently servicing the car & changing spark plugs, Oil, Oil filter & air filter. The car car began to misfire at idle. It made a popping sound from the exhaust every 3-5 seconds or so. What could be the problem because it was not misfiring before the service. All the plugs are gapped to the right spacing. Recently it has been running a little noisier but still misfiring.
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Friday, September 24th, 2010 AT 7:05 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Is it the OEM sparkplugs and also did you torque it to specs-double check the plug wire connections at both ends.
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Friday, September 24th, 2010 AT 7:18 AM
Tiny
RACERS320
  • MEMBER
  • 2 POSTS
No, its was aftermarket plugs (NGK V-Power) & no I 'dont own a torque wrench sadly.
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Friday, September 24th, 2010 AT 7:40 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Just using the wrong type plug can cause the engine to have a fit-check the plugs again or replace it to the OEM part-The only thing you did was replaced the plugs unless you didn't wire it correctly-inspect the plug wire contact ends
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Friday, September 24th, 2010 AT 8:55 AM

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