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Thread: Cylinder 3 misfire?

  1. #1
    It's almost paid off! simdrew's Avatar

    2003 Mazda Protege

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    Question Cylinder 3 misfire?

    Does anyone know why I get a CEL code for a cylinder misfire? What could be causing this? The spark plugs have less than 8k miles on them, so do the wires. I have a pretty open-ended exhaust, could that be the problem?

  2. #2
    It's almost paid off! simdrew's Avatar

    2003 Mazda Protege

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    BUMP anyone?

  3. #3
    Gothenburg Superiority Installshield 2's Avatar


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    lots of things can cause a misfire...and other codes thrown with the misfire? I assuming you had some way to know why the MIL was on, so a reader or something?...

    could have just been a one time thing though...it doesn't necessarily mean you have a problem....a lot of times it can be caused simply by a bad shot of gas into the cylinder...with a little moisture or impurities...

    what type of conditions did it occur in? on a hot day with the AC on at low rpm or something?...the conidtions may help find why it happened...
    "I am a Union Delegate" -Henry Hill '63

  4. #4
    Baby replaced my P5! WAH! ddogg777's Avatar

    2002 Yellow P5

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    My Malibu has a no#2 cylinder misfire. The tech hooked up the obd computer and a fuel pressure gauge to the fuel rail. He then fired each injector individually and you could see the fuel pressure jump and the hear the injector click. Long story short, all the injectors but #2 were working.
    Other causes:
    spark plug
    spark plug wire
    coil pack
    2002 Protege5 for sale, 31000 miles.

    "...for if they humble themselves before me, and have faith in me, then will I make weak things become strong unto them." --Ether 12:27


  5. #5
    Registered Member s5number2's Avatar


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    try this my lx had the same problemit hasn't returned for a while

    http://www.msprotege.com/forum/showthread.php?t=77755

  6. #6
    Original Member
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    2013 MX-5 Club, Black/Black

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    i had the code once, it was due to my washing my engine bay and i had water in the cylinder, above the spark plug, i used some vaccum line and sucked the water out - problem went away.

  7. #7
    Banned Brian MP5T's Avatar
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    Yikes...

  8. #8
    Banned SpicyMchaggis's Avatar
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    look on the brightside..at least you haven't succumb to bent valves..many FS-DE's have fallen victim to over-rev and wasted valves..cams keep going more and more teeth back and eventually you just blow the motor..

  9. #9
    MAZDASPORT AZ member dawick777's Avatar

    2002 Silver MP5

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    just brought my 5 in for a #1 misfire.....said it might be a burnt valve or something.....i replaced plugs, coils and wires...still no go

    so we'll see what they come back with
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