Cylinder #4 misfire!

Discussion in 'Modifications And Maintenance' started by Dirtywagon, Oct 7, 2009.

  1. Dirtywagon
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    Dirtywagon Member

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    2003 wrx wagon


    So last night I decided to take a trip to white castle after work and when I was sitting in the drive through the damn check engine light started flashing. My car has 164k on it so I figured it wouldn't hurt to put new plugs and buy a new ignition coil for #4. Did that real quick and The vehicle is still misfiring ><. Generic OBD does not do misfire recognition but I'm pretty sure I have the right cyinder.

    First question before I feel like a complete retard is...I read on alldata that cylinder #4 is the back left(perspective of you sitting in the front seat) Is this true?

    Doing a compression test now(wish me luck)
     
  2. bhiku
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    bhiku Well-Known Member

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    Quick search will confirm it, but as I recall:

    Bumper and Headlights
    2 - 1
    4 - 3
    Stuff and People
    Bumper and Tail Lights

    You could also run some injector cleaner through the gas tank. When was your fuel filter changed last? Did you buy cheap gas last? And what precisely do you drive? 'Cuz that might help us some.

    Finally, good luck, eh!
     
  3. Dirtywagon
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    Dirtywagon Member

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    So i just helped myself. Ran compression on 3&4 and found 3 @150psi and 4 at 35psi. FML
     
  4. JasonoJordan
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    JasonoJordan Well-Known Member

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    time for a new short block
     
  5. AWDimprezaL
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    AWDimprezaL has more posts than you

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    no, its time for new valves, this will be probably the 8th wrx this year that ive seen that needed valves.
     
  6. JasonoJordan
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    JasonoJordan Well-Known Member

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    o ok sorry dont know tons about the inner workings yet :)
     
  7. TSTRBOY2004
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    TSTRBOY2004 Well-Known Member

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    bugeye running Holiday gas I assume... .....


    sorry to hear
     
  8. AWDimprezaL
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    AWDimprezaL has more posts than you

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    Not so sure about the holiday gas thing anymore, Seems like it does it on any gas. :( but not every one of them suffers this fate...
     
  9. JasonoJordan
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    JasonoJordan Well-Known Member

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    well I'm hoping I don't I'm far from stock n running a e85mix so we will see.
     
  10. retreif
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    retreif Well-Known Member

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    would that be Holiday e85? :eek3:
     
  11. JasonoJordan
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    JasonoJordan Well-Known Member

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    no its generally cenex
     
  12. subytek
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    subytek Well-Known Member

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    I said this to the last guy, and I'll say it again. Did you ever have your valve clearance's checked at 105K?
     
  13. Dirtywagon
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    Dirtywagon Member

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    No, I bought the vehicle at 140ish thousand miles. Gonna check up on some things tomorrow.
     
  14. headrush
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    headrush Well-Known Member

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    This just happend to my bugeye not even 2 weeks ago...
     
  15. JasonoJordan
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    what does it cost to have the valve clearance checked?
     
  16. Dirtywagon
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    Dirtywagon Member

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    UPDATE!!!!

    Yay engines out and valve cover is off, waiting for a roomate to come home to counterhold the cam for me while I take the silly plastic cam gear off to get at the head bolts.

    Wish me luck!