Thread: gmpp 290 hp 350

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Is he running power brakes ? depending on where he is pulling vacuum from he might be pulling oil from a faulty master / power assist unit and fouling the plugs nearest the vacuum port. The vacuum line to the transmission would also be suspect in my mind. Easy to troubleshoot, just disconnect and see if smoke stops. or if there is obvious signs of fluid in the vacuum lines.

How long has the engine run for? If it's really burning oil I would expect to see some ash on the insulator.

thanks for respnding, wont have much time to play with it for a while ,work is getting in the way.If it doesnt clear up will do some more checking and keep you posted