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Thread: Misfire/popping with no CEL

  1. thelatinist
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    Misfire/popping with no CEL

    10-10-2012 07:19 PM #1
    About a week ago I turned on my 2.5 Rabbit and found it idled very rough. Seemed like a cylinder was misfiring. Stepped gently on the throttle and it went away. Since then I've noticed what feels like a misfire under acceleration, especially when cold, and an occasional "popping" noise when I let off on the throttle. I'm also had a 2+ mpg decrease in fuel economy. Any ideas where to start?
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  3. spdfrek
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    10-11-2012 04:55 PM #2
    How old are your plugs? I don't know if that is a great start but its a start.
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  4. thelatinist
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    10-18-2012 03:47 PM #3
    Quote Originally Posted by spdfrek View Post
    How old are your plugs? I don't know if that is a great start but its a start.
    They're original. Everything is original on the car but the rear brakes and two sets of wheel bearings. I've got 85k on it and have never had an issue (well, not since a defective clutch plate tore up the transmission at about 3k).

    I took it in to my mechanic today and he couldn't find anything wrong with it. It has smoothed out quite a bit since I refilled it, actually, and I'm wondering if I just had a bad batch of gas. Think I'll add a bottle of fuel-injector cleaner and see what happens.
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  5. TylerO28
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    10-20-2012 06:02 PM #4
    You need to go maintain your car. Fuel filter, plugs, coils, air filter etc...fix it by doing the needed work

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  6. PhAyzoN
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    10-20-2012 08:29 PM #5
    Original plugs at 85k!? You should be on about your 3rd set by now...
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