Question about 1994 Honda Accord

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My friend did a spark plu change and one of the spark plug was stuck and he took out the valve cover and the thing that goes under the valve con ver and replaced all spark plugs and put everthing back to gather and now it makes a loud knocking noise,like a helicopter,what did he do wrong?

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1st check fireing order if it is not correct car will not run correctly

Posted on Aug 01, 2009

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I would take the valve cover back off...It really sounds like something is under there. I have seen people leave sockets in there before. Also take the plugs back out and see if you can look inside the cylinder for a piece of the old plug. Also try using a telescoping magnet avaliable from any parts store....

Posted on Jul 24, 2009

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