Question about Buick Skylark

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96 skylark, 2.4, auto just bought the car, it sounds like it wants to start but back fires thru the intake and exhaust, I checked the timing and both cams (8mm bolt installed, good) crank lines up, chain looks good, now I noticed that when I turn the crank 360 the cams are 180 off, would this have anything to do with the way it's acting when trying to start?

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  • Ricky Gittins
    Ricky Gittins Sep 24, 2009

    2.4 don't have a dist, or wires, everything is in under the ignition coil andmodular assembly, you can't get it wrong

  • Ricky Gittins
    Ricky Gittins Sep 24, 2009

    It's hard to take someone advice when that person doesn't know that a 2.4 qaud is a 4 cyl engine and that there is no dist. or spark plug wires, I don't need someone to guess, I can do that and put tons of money in it, and thats not a good mechanic

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  • Buick Master
  • 3,433 Answers

The cam turns twice for each revolution of the crank.. It's either crossfiring( wires mixed up) or the distributor is out of sync. Good Luck, Ned

Posted on Sep 24, 2009

  • Ned C Cook
    Ned C Cook Sep 24, 2009

    Ok, sorry My mistake, It sure acts like it. I have a buick regal. I'll ck it out.

  • Ned C Cook
    Ned C Cook Sep 24, 2009

    Withe the crank on TDC ON #1, Are the valves closed,all valves on #1? I have doubts about this being an issue, you said the crank lines up. to the crank tdc spot? Usually it's with the key straight up. Has someone been in this engine before you bought it? As far as your question, Yes, the cam timing would cause this problem. When you inspected the gears and chain did you by any chance verify the timing marks on the cam? You mentioned them being 180 on one turn of the crank.. Let's go back to synchronizing the marks. Using #1 cylinder.on the bank #1 is on. It's almost like timing two engines. Six cylinder, The sister cylinder is cylinder #6. When #1 is at tdc and firing, its valves are all closed and # six cylinder is opening the intake valves Positioning such will verify your timing marks on the cams and vice cersa. Heck, you might be my neighbor down the street. I'll be glad to help you if you don't live too far. I need something to do any. I'm bored and going crazy. I live in Mira Loma cell 909-630-3192. Give me a call if yoou want help Ned

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