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  1. #1
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    Opinion on spark plugs

    I was getting some misfires on cylinders 3 and 6 so I changed the plugs. Here is how they looked, cylinder 3 is on the left, 6 on the right.

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  2. #2
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    did it fix the problem?




  3. #3
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    Yeah, no more misfires on those cylinders. The plugs above had around 40k on them.

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    Did you change all of them or just the two? What do the others look like? Mine looked just about like that (all 6) at 47k miles, was stock and owned by someone else all those miles. Plugs should be done much more frequently once you up the boost - anywhere from 15-25k miles depending on how aggressive your tune is and how hard you drive.
    James Muskopf
    RRT Racing
    2007 E92 335i/6MT Procede Rev3 w/PWM meth, otherwise stock
    E28 M5, R171 SLK320

  5. #5
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    you should always change ALL plugs at the same time but you probably did.
    07 335i AT - MOTIV 750 - MHD BMS E85 - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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