Re: Re: Re: carb popping Ford 8n

Posted by Don Wadge on January 25, 2004 at 07:14:24 from (142.161.12.52):

In Reply to: Re: Re: carb popping Ford 8n posted by Scott on January 24, 2004 at 19:28:49:

Well, it sounds like there is the possibility of a sticking valve. I think I would check to make sure you are getting gas freely to the carburetor and I would double check the float level as well as making sure there is no dirt obstructing the jet or needle valve as the case may be just to eliminate this possibility. Then I would take off the valve covers and check to see that all valve lifters are going back down and see if all valves are going back down. If this is all good I would start the tractor up and spray WD40 on the valve stems and lifters with the tractor running. I'm not sure how long you can do this as I do not know how much oil will come out with the covers off. I have done this with overhead valve engines and it works well. If this is sticky valve(s) or lifter(s) it will clean up with a bit of running. Another thing you can do is put about 1/2 a gallon of WD40 in th oil and run it for a while. This will help clean up your rings as well.

I did this with an old unstyled A John Deere we found several years ago. It was seized when we got it and we managed to get it unstuck but it barely had enough compression to start and ran poorly so we put about 2/3 WD40 in the crankcase and let it run. It just got better and better. Then we drained it and put good oil back in. It then had not bad compression and after a period of time just of normal playing around (wasn't being used for work) it would bounce like a new tractor.

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