Posted by Wayne Mo on August 09, 2008 at 20:28:16 from (207.69.137.35):
In Reply to: Re: Smoking Tractor posted by Janicholson on August 09, 2008 at 05:55:01:
Thanks for the detailed instructions for installing valve seals. I put air pressure in each cylinder and they all held good with just a little noise heard at the crankcase. I put air pressure on each cyl with the intake taped shut and the intake valve open and there was a pretty good whistle of air in each heard at the crankcase. Compression measured 120 in each cyl. I concluded it is the intake valve guides leaking oil. Your idea to replace the seals sounds pretty good. Maybe I should remove the head and replace the guides and or valves. Not sure what to do. I am surprised that worn valve stems or guides would cause so much smoke though! But I really think the rings and valves are sealing ok.
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