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When you come to a stop light in your 1984 GMC truck with a 350 the right side exhaust smokes for about 30 seconds what can be wrong?


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Wiki User
2007-03-15 09:19:44
2007-03-15 09:19:44

The oil return holes in the head are probably blocked with sludge.The oil goes 2 the front valves & is sucked into the combustion chamber via worn valve stem seals. ----------------- Most likely it's worn valve seals and valve guides. If your oil returns were blocked, then you would have serious valve cover leaks on a 1984 350 chevy. Chances are, you get a puff of smoke upon the first startup of the day as well.

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Something in your engine or transmission is burning or your exhaust system has a crack somewhere


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