what causes a high-mileage car engine to lose power?

Discussion in 'Off Topic' started by imported_itr, Sep 11, 2005.

  1. imported_itr

    imported_itr Senior member

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  2. CrackRabbit

    CrackRabbit Lifer

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    Possibly.
    With no other description of the car or problem it could be anything from a bad air filter to little green men stealing your sparkplugs.
     
  3. jlbenedict

    jlbenedict Banned

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    worn parts.. particularly... pistons, piston rings, and the chambers...
    when those are wore... you lose compression, thus loss of power..
     
  4. imported_itr

    imported_itr Senior member

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    nothing wrong with the car. it just has over 200 grand miles.
     
  5. tfinch2

    tfinch2 Lifer

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    lost compression FTW
     
  6. imported_itr

    imported_itr Senior member

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    so if you replaced those parts, the engine would perform like a new engine?
     
  7. tfinch2

    tfinch2 Lifer

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    If you do not know what replacing those parts will do for an engine, you should not replace them.
     
  8. MaxFusion16

    MaxFusion16 Golden Member

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    mainly compression and carbon build up
     
  9. Analog

    Analog Lifer

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    compression loss = power loss. Can't get around that one, even with additives that say 'miracle' somewhere in the title. :)
     
  10. skyking

    skyking Lifer

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    it is a systemic thing. The FI system is not what it was, the ignition, tranny, rings, valves.
    add em up and it = something less.
    You may have a broken or messed up <insert part/system here> that would bring most of it back.
     
  11. thedarkwolf

    thedarkwolf Diamond Member

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    What makes you think there is nothing wrong with it? If you have all of a sudden noticed a drop off in power there is something wrong with it. The compression ratio is going to be a extremely slow drop off over the life of the engine and you aren't going to notice a power drop off unless something major goes wrong.

    If the car uses a timing chain and it has never been replaced in 200k miles it will be pretty stretched. Like the cylinders it would be a gradual thing but if the chain has stretched enough it could jump a tooth and that would cause a very noticable change in power. Then there are just all the normal tune up parts.

     
  12. lobadobadingdong

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    you could always take the car to a trusted mechanic and have the engine overhauled.
     
  13. alm4rr

    alm4rr Diamond Member

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    compression