could this be a camshaft problem?

Discussion in 'Technical' started by 2-tone, Jul 16, 2006.

  1. 2-tone

    2-tone New Member

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    on my way home today, my maverick started running really rough... seemed to be off balance and also seemed to want to die so i pulled in to a parking lot and checked a few things. from what i can tell, the timing is really really off... it will run but not well and there is a loud thunking sound from around the left side valve cover in the front. I have not had a good chance to go look at it yet but tomorrow i should pull off the valve cover and check to make sure they are opening and closing. does anyone have some other suggestions to check?

    thanks :)
     
    2-tone, Jul 16, 2006
    #1
  2. CornedBeef4.6L

    CornedBeef4.6L no longer here

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    Broken rocker arm, rocker arm stud broke or pulled out.
    or adjustement backed off.
     
    Last edited: Jul 16, 2006
    CornedBeef4.6L, Jul 16, 2006
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  3. don graham

    don graham MCG State Rep

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    my first thought was rocker arm stud too. mine ran but felt like it was not running on all 8 cylinders. if thats what it is make sure you check the pushrod and the lifter.if everything looks okay there and valves are okay try checking the timing chain.:)
     
    Last edited: Jul 17, 2006
    don graham, Jul 17, 2006
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  4. Jamie Miles

    Jamie Miles the road warrior

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    My 6 cylinder ran the same way when it bent 3 push rods...
     
    Jamie Miles, Jul 17, 2006
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  5. Rick Book

    Rick Book Member

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    Timing Chain?
     
    Rick Book, Jul 17, 2006
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  6. Texas 71

    Texas 71 Member

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    I agree with the other guys. It sounds like it bent a push rod or broke a rocker arm. Take that side valve cover off and it should be really obvious. If it is a push rod or rocker, check your valve and spring for that cylinder. A siezed valve will cause that to happen. Look at it closer and let us know. Good luck.
     
    Texas 71, Jul 17, 2006
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  7. ratio411

    ratio411 Member

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    Do you still have the stock timing set?
    They were nylon* toothed! (*plastic!)
    If it just broke a tooth and spun the chain a bit, you should be okay. However, if it shears multiple teeth, you can break all kinds of stuff.
    Good luck
    Dave
     
    ratio411, Jul 18, 2006
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