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What color is the smoke that is coming out of the til pipe? Is it Blue, Black or white smoke?
White smoke out of the tail pipe is an indication of he engine burning coolant. You might have a blown head gasket or a cracked head. You will need to have your cooling system checked for any Hydrocarbons in your radiator. If there are Hydrocarbons, then the head gasket will need to be replaced.
SO it is blowing gas out of the tail pipe you say?
Have we checked fuel trigger on number one cylinder?
Does fuel pressure leak down key on engine off?