engine question

Discussion in 'Trucks [ Eighteen Wheelers ]' started by zinita17601, Mar 6, 2014.

  1. zinita17601

    zinita17601 Road Train Member

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    Aug 19, 2010
    lancaster pa
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    i have a kenworth with an mxs c15 acert,i drove the truck for 200k miles no problem than last year i put a driver on it,in a 5 month period clutch went out and than the engine dropped a valve and seized.the engine had only 600k miles and never been abused by me.i decided to overhaul it and it cost me a good chunk of money.the question is why an engine will drop a valve and do you think the driver was a factor?
     
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  3. Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    drop a valve.... bad valve spring, too high rpm, wrong lash ajustment .. ore bad luck
     
  4. d281833

    d281833 Heavy Load Member

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    May 15, 2012
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    Coulda been driving it like a race car, did you pull the ECM record? Might give you a bit more insight.
     
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  5. DL550CAT

    DL550CAT Road Train Member

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    I would be looking real close at the ECM.
     
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  6. Harley Charlie

    Harley Charlie Light Load Member

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    Sep 17, 2008
    Warfordsburg,Pa.
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    So much for Drivers, a valve can drop at anytime even on a reman head but when I see clutch and dropped valve in a short time frame I would be thinking Bad Driver.But you are getting an education and I always said they were not expensive, but Priceless.You can see where I am going with this right?.
     
  7. Truckertrouble

    Truckertrouble Bobtail Member

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    Mar 2, 2014
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    Did you have a valve set done within that 200k miles I feel valve sets are regular Maintence and should be checked every 100k miles or once a year
     
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