Re: Water distribution tube

Posted by David Baird On 2010/7/7 23:32:18

I agree with the suggestions already made here. My first check would be the radiator cap. If that is OK, I would them check the water distribution tube. If it is clogged it will cause the back couple of cylinders to overheat at cruising speeds where there is more heat generated and the water then can't circulate fast enough to these cylinders. I would then check to see if a mouse has created a house in your muffler tail pipe which causes back pressure. One other item to check is to see if the manifold heat riser is stuck in the closed position.
Good luck and try to enjoy the problem solving aspect of this situation.