2002 Acura RSX #4 cylinder misfire again! Help!

Tiny
AIRMAN734
  • MEMBER
  • 2002 ACURA RSX
  • 4 CYL
  • FWD
  • MANUAL
  • 70,000 MILES
So I threw a check engine light for a #4 cylinder misfire, so my first thought was to change the plugs(which I did) that didn't work, so then I replaced the ignition coil. The CEL went off but the car still had a bouncy idle, and now it came back on? Im tired of spending money any ideas!
Monday, August 3rd, 2009 AT 7:31 AM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Check compression to be sure the engine is mechanically good. Then use carb cleaner, spray around the intake manifold on #4 to see if it changes, if so the intake may be leaking causing the misfire(lean miss). If it doesnt change the idle when you spray and compression is good, it may have a bad injector. If so th eplug will be much lighter in color when compared to the others
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Monday, August 3rd, 2009 AT 8:37 PM

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