Posted by Hobo,NC on December 03, 2017 at 18:38:55 from (75.136.231.157):
I have had the same issue the last 5 years on my 77 f350 it did not show up till I replaced the engine I used the original carb on the replacement engine. I have been into the carb 3 times never could find are make it leak so lived with it. I worked on a Jeep a few weeks ago that had the same carb a nice rebuilt good working carb the owner said he was going to put a 4 BRL on it. I ask for the carb a few days later it was laying at my front door :)... I put my jets in the replacement and ITS FIXED no more burning a starter UP trying to start it.
I have checked the old carb every way I know how I never could find a problem with it other than I had set the float too high. I have replaced and checked the fuel pump never could find a problem with it. Mine has a seat tank no way it can drain back up hill its a mystery that had something to do with the carb. NO DOUBT the carb did not have fuel in it as much as I had to pump it if it had fuel in the carb it would have flooded it. On my 390 coolant flows thru the carb spacer between the carb and manifold I once thought the heat from the coolant may be a problem evaporating the gas from the carb when I shut the engine off I never tried to bypass the spacer.. The Jeep carb had a 1/4" insulator between the carb and spacer I could have used the insulator if I had found some longer mounting studs but did not use the insulator. The other problem is sometimes it will not start till you let off the ignition switch I have checked it never found a problem with it. It does not do it every time so learned to deal with it. I drive it 1000 miles a year its old its a FORD I have never had a OLD FORD truck I did not have to work on it more than I drove it...
The problem reminded me of a Chrysler thermoQuad the seals would dry out and empty the float bowl overnight and never have a indicator the engine was flooded with fuel.
When a Ford power valve leaks I have always been able to tell but not on this one once started it ran great with no indication of ruining rich. I am not going to rule it out I did replace it and did all the shadtree checks I know of of check the power valve.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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