[truckdude239]

i had one in the other day for the same nosie on the driver side rear i though motor was knocking ended up shooting carb cleaner down the push rod, couple of cans, then flushed with oil,changed the oil put a full can of seafoam in it and ran it for about 30 mins then changed the oil again and also did an upper cylinder cleaning noise was gone after all this, im thinking a piece of carbon was stuck in the lifter