Edmunds Answers

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  • avatar jjwoodborer1 06/30/10 1:25 pm PST

    This is definately a vacuum leak , what you need to do to locate it if it is external is get a spray botttle and put some automatic transmission fluid in it,next spray the fluid all over the intake manifold,all around the carburator are throddle body,where the intake mates with the heads,espessialy around plastic parts, when you spray the place that is leaking the engine will change the way it is running and smoke will come out of the tailpipe.good luck

Answers

  • jjwoodborer1 06/30/10 1:25 pm PST

    This is definately a vacuum leak , what you need to do to locate it if it is external is get a spray botttle and put some automatic transmission fluid in it,next spray the fluid all over the intake manifold,all around the carburator are throddle body,where the intake mates with the heads,espessialy around plastic parts, when you spray the place that is leaking the engine will change the way it is running and smoke will come out of the tailpipe.good luck

  • jjwoodborer1 06/30/10 5:14 pm PST

    Also on your truck after futher tought you said that it was getting hot ,pull the dipstick and check for water in the oil, if there is water in the oil it will be milky looking(whiteish) if so you could have a intake gasket going south, if the truck has not been worked on it is a very good possiabilty that it has a metal intake gasket, which abater time will rust out allowing water to get in the oil and if it is bad enough it could be leaking on the intake ports to the heads. Also if you got this engine too hot it could also warp a head are worse yet crack a headwhich could cause the same problem when you put the truck in driveare reve the engine . get a pressure gauge and pull a compression check it should be between 130-160,if you have a large difference between any of the cylinders you ha a problem. You will probly notice right off which cylinder is the bad one because you will have water on the plug.

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