Question about 1987 Buick LeSabre

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1987 buick lasabre 3.8 L

Where is #1 piston?

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  • jmichgunn May 22, 2009

    is it left front facing front of motor? (considering motor is in sideways)

  • jmichgunn May 22, 2009

    excellent!! Thanks so much!!!

  • jmichgunn May 22, 2009

    stumped again...sorry, no books tdc with timing marks lined up...does it matter whether piston is tdc on intake, or exhaust compression stroke? or is it o.k. as long as marks are lined, and #1 is tdc? Thanks so much to anyone who can specify this mess...



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Left front

Posted on May 22, 2009

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  • frank thomas wilson
    frank thomas wilson May 22, 2009

    Sorry not to be more explict. The motor has a serpintine belt on it which is the very front of the engine. That is facing at the right hand fender on your car. Standing at the right ( passenger side) fender the very front spark plug wire closest to you towards the front headlight is number one piston

  • frank thomas wilson
    frank thomas wilson May 23, 2009

    Remove the number 1 spark plug. align the TDC markings you show. Next place a long screw driver in the spark plu hole. The screw driver should not go into the hole that far for you have it top dead center at the marks. If the screw driver sinks in more than 4 inches you may have a bad timing chain

  • frank thomas wilson
    frank thomas wilson May 24, 2009

    no it does not matter



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