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91 Lumina timing chain and camshaft

Discussion in 'Other Rides' started by driney, Aug 28, 2004.

  1. driney

    driney 1/2 ton status Premium Member

    Joined:
    Jul 6, 2001
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    Location:
    west central illinois
    My daughter's high mileage 91 Lumina with a 2.5L 4 cylinder broke a timing chain. After taking it apart I noticed when the valves close as I turn the cam with a wrench I can really feel each lobe. I've never noticed a V8 cam having quite the same feel. Is this the nature of a 4 cyl., having more degrees of separation between lobes, or do I have another undiagnosed problem?
     

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