Re: F-12 fuel pump problem!!

Posted by DA@STL on July 24, 2005 at 18:51:42 from (24.217.241.105):

In Reply to: F-12 fuel pump problem!! posted by Rob in MI on July 23, 2005 at 18:15:48:

I just experienced the exact same problems! Interesting. I just today got it fixed to where I can hand crank it and start it on the second click of the mag. I agree with everybody elses comments. I even went so far as to temporarily replace the existing fuel lines with some clear plastic tubing to observe the fuel flow. Make sure your bypass chamber has a plug installed in the top of it. It is not a pipe thread! Next, make sure it is open. I removed it, plugged the large return line with my thumb, blew into the bottom of the tee to make sure it was open. Then I moved my thumb to the outlet of the tee (going to the carb) and blew through it. After reinstalling all of the lines, make sure they are tight, hand crank with the mag off, until you get fuel to the carb. Somebody else already mentioned to make sure your float is set correctly.
I rebuilt my fuel pump using a kit from Rice Equip and it came with new valves, diaphram, and springs. I ordered a new push rod also but, found it to be about 1/8" shorter than the orginal. I reused the orginal. Another thing I found is the gasket for the inlet screen to the carb was leaking real bad. This allowed fuel to drain back to the bypass chamber and air to enter the fuel system making for hard starting.
Of all days to work on the old girl, it hit 101 degrees today! But it was worth it to to get her started. If you want any more specific help my EMail is open. Good Luck.

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