compression test

Discussion in 'Modifications And Maintenance' started by mnstilynwrx, Sep 11, 2006.

  1. mnstilynwrx
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    mnstilynwrx Well-Known Member

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    i was wondering how much something like this would cost? who can do it and what are some of the steps that take place. iam thinking since i still have a cel code for my car after i swiched the spark plugs and checked the coil packs that i would need to do this.
    thanks
     
  2. esperunit
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    esperunit Well-Known Member

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    well..

    If you just changed your plugs and you're geting a low compression absed CEL, I'd say you probably didn't put one of your plugs in tight enough.
     
  3. mnstilynwrx
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    mnstilynwrx Well-Known Member

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    i dont think its that, any one else have advice? keep it comeing
    thanks
     
  4. AWDimprezaL
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    AWDimprezaL has more posts than you

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    Did you put in new plugs because you got the CEL? or after? like zach said, not tightening them enough would do that, they have a crush washer on them
     
  5. CBR04WRX
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    CBR04WRX Well-Known Member

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    What code is it throwing? What makes you think a compression check is needed? Got many miles? Overboosted & think you blew a ring land?
     
  6. mnstilynwrx
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    mnstilynwrx Well-Known Member

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    it's throwing the cylinder 1 and 3 misfire. i had the spark plugs cahnged once, than later i changed them agin and also had the coil packs switched to see if it was one of those, and the code still came up after a while. i just figured that i maybe hade a low compression in one of the cylinders. it has 105,000 miles on it. and i dont think it's been over boosted.
     
  7. TSTRBOY2004
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    TSTRBOY2004 Well-Known Member

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    injector clean maybe.. seems like you have addressed spark issue but not fuel maybe...?!?!?1 like an injector firing wrongly....???
     
  8. mnstilynwrx
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    mnstilynwrx Well-Known Member

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    i have done some cleaning for them, seafom, and like octaine booster. but i guess nothing serious. is there something i could do for that? i know at your shop i got some kind of cleaning done, i dont know if it was just for the gunk in the engine or if it was for the fuel system.
     
  9. mnstilynwrx
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    mnstilynwrx Well-Known Member

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    any more ideas keep them comeing.
     
  10. AWDimprezaL
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    AWDimprezaL has more posts than you

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    What year is your car? if its an 02 ide be concerned about burnt valves
     
  11. mnstilynwrx
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    mnstilynwrx Well-Known Member

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    yeah its an 02 wrx. how much is that going to cost. if its that...
     
  12. Zombie
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    Zombie Well-Known Member

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    werd!
     
  13. mnstilynwrx
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    mnstilynwrx Well-Known Member

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    is that what happened to yours zombie? you didnt get it fixed right. you just swapped to the 2.5.
     
  14. Zombie
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    Zombie Well-Known Member

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    well, i'm 95% sure thats what happened based on the symptoms. but I never took the motor apart to find out for sure. The car was 100% stock and then low compression at 140k so I just did the swap.

    You burning any oil? Do a compression test too. I would do one sooner than later before you make a rebuild on your current motor more expensive.

    But hopefully its something trivial. good luck!
     
  15. mnstilynwrx
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    mnstilynwrx Well-Known Member

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    no i have not been burning oil. and yeah i will do one soon. i hope its not to expensive or to big of a problem....