Hitting on 4 cyls

Discussion in 'Technical' started by gconnsr, May 26, 2009.

  1. gconnsr

    gconnsr Member

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    My 200 I6 is hitting on 4 cyls, I have spark and all that. It sounds like an intake valve or two listening to the exhaust. Is it common on these things to throw rocker arms? If so, can I just pop them back in?
     
  2. PaulS

    PaulS Member extrordiare

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    There has to be a reason that the rockers are coming off - if that is what happened.
    Check your firing order first and then your plugs. It is possible that your plugs are simply fouling out. I had this problem on my 250 six and went to the older (hotter) plugs and the problem went away.
     
  3. gconnsr

    gconnsr Member

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    Thanks for the help Paul, but I'm 100% positive its a rocker or a valve. If it's as simple as popping a rocker back in I'll do that, but I'm trashing the six as soon as I get around to it. I really just wanted to know if this is common on the 200 I6.
     
  4. PaulS

    PaulS Member extrordiare

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    It is not a common issue as far as I am aware. Flat cam lobes would cause it but that isn't common with the sixes either. Since the rockers are on a shaft it is not a stud pulling out. It might be a couple of bent push rods but even that isn't common.
     
  5. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    Burnt exhaust valves are not unusual on the sixes though.If it were an intake valve it would be popping through the carb...If it were burnt that is.
     
  6. cdeal28078

    cdeal28078 Member

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    Only one valve cover to pull and find out real quick.
    Clint
     
  7. Jamie Miles

    Jamie Miles the road warrior

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    First thing I would do is check the compression on all cylinders.
     

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