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2002 Pontiac Sunfire Question: Timing Chain?



Visitor, 2.2L 4 Cylinder, Pineville, MO, April 07, 2010, 15:51

Engine stopped running. Turns over fine. No compression in 2 cylinders. Pulled valve cover and when turning engine over the valves do not operate. no visible valve problems (but have not seen inside cylinders). Is this likely a broken timing chain? Is the 2002 2.2L (gasoline not diesel) an interference engine?

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  • Answer #1

    April 07, 2010, 18:04

    Sounds like the timing chain failed and chain driven engines are usually interference engines so you probably have a couple of bent valves. The only way to find out is to do a compression test or pull the cylinder head

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  • Medium-star Best Answer
    Visitor, June 11, 2010, 18:00

    2.2l ohv engine is non interference engine --- timing chain tensioner fails
    2.2l ecotec engine is an interference engine that will be damaged if the chain fails
    I think your engine is the ohv engine which means you need to replace the timing chain and tensioner align timing marks and engine will run fine

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  • Reply

    phildelauretis, October 14, 2012, 20:41

    is that pontiac sunfire with chain

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