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Order Ford 600 Parts Online

600 Ford fuel problems

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Author  [Modern View]

08-12-2020 19:30:12

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I have a 600 Ford - it runs fine cold - after a few minutes - air comes back through the tank - a friend thinks it is a cracked head - how can air come back into the tank from the engine - tank and fuel line and carb is new

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Jim L WA

08-13-2020 09:26:28

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 Re: 600 Ford fuel problems in reply to BadBoy, 08-12-2020 19:30:12  
Shouldn't it have a vented gas cap?

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08-13-2020 06:25:32

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 Re: 600 Ford fuel problems in reply to BadBoy, 08-12-2020 19:30:12  
Also - there is a heat problem with the engine - I think maybe it is about 1 or 1 1/2 degree out of time or maybe the timing advance system in the distributor may not be working - going to check that - thanks for the advice of checking heat deflectors - I will definitely look into that one - - Thanks

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08-12-2020 21:44:32

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 Re: 600 Ford fuel problems in reply to BadBoy, 08-12-2020 19:30:12  
Cars from the 40s and 50s had similar problems. They called it vapor lock (gas reaching boiling point). Boiling point of gasoline varies from 100f to 400f,depending on what additives it contains from refinery. Pure ethanol boils at 174f so that plays a roll. What I'd suggest is (A) make sure line near exhaust isn't copper nor aluminum. (B)check to see if factory heat shield between engine and tank has been removed. If those are ok,try running a couple gallons of marine gas or adding diesel to gas,start with 1/2 pint x gallon and don't exceed 1 quart or don't use enough to make smoke. If that cure's the problem,stick a piece of Hardie Plank between fuel line and manifold and insolate line. For what it's worth,some people back in the day claimed wood clothes pins clipped to fuel line helped (I never tried it).

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