454 chevy motor problem

Discussion in 'Class A / Diesel Pushers' started by hotrod nc, Jun 5, 2006.

  1. hotrod nc

    hotrod nc New Member

    I have a 1985 winnebago with a 454 chevy . The exhaust manifold was replaced 300 miles ago . When I started it the other day I blew a spark plug. Now it runs ruff. Ihave replaced plug and plug wire.
  2. C Nash

    C Nash Senior Member

    454 chevy motor problem

    Is it skiping on the same cylinder that blew the plug? Easy to crack a plug when installing. Did you gap the plug? Have you checked compression? Might get more answers if you post in general since it is a gasser.
  3. wickedmouse383

    wickedmouse383 New Member

    RE: 454 chevy motor problem

    You may want to check and make sure no other cylinders are missing as in maybe a burned plug wire on another cylinder besides the one you had a problem with. Heat from the plug wires will burn them if they ever made contact with the manifold at one time and cause that problem.

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