my rig is in the shop have a sticking exhaust valve in the cylinder head requiring them to replace the cylinder head. anyone else have the problem. just to let you know my symtoms were rig a bit sluggish fuel economy went in the toilet like 12-14mpg and finally the engine light did go on. i didnt experience any stuttering or stalling that occurs sometimes with this problem. id be interested to hear if anyone else has had this problem
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