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EFV-8 Club Forum / General Ford Discussion / Fuel Pump and Vapor lock

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Posted By Discussion Topic: Fuel Pump and Vapor lock -- page: 1 2     supereal 10-01-2010 @ 10:55 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 I agree with TomO. We have removed several electronic conversions when the owner reported poor performance or stalling when the engine was hot. This seems to be typical of electronic gear. I fail to see the advantage of these conversions, as a properly set up original distributor with quality points should run at least 15,000 miles with no problems. For the average old car, that is many years. Old Henry 10-01-2010 @ 10:43 AM reply profile send p.m. Senior Posts: 738 Joined: Apr 2010 I solved a similar problem recently by just using higher octane gas. It is less volotile and less prone to vapor lock. Later I also found that the fuel hose from the end of the copper line to the fuel pump was pulling off of the crimping. Any little leak in that would "vapor lock" the fuel pump with air just the same as vaporized fuel. Still Old Henry 37RAGTOPMAN 10-01-2010 @ 9:59 AM reply profile send p.m. Senior Posts: 1961 Joined: Oct 2009 woodywagen, is your car 6 volts,or 12 volts, you said it has a modern distributer conversion on it, does this dist use a regular 6 VOLT standard coil with the voltage resister in place ? if you are using a modern conversion distributer, you might have to use a matching coil, so the 2 are matched,electronic distributer, electronic coil, it would be nice to know all the mods that were done, to give correct repairs, that are needed, Would make a little easier. when knowing, hope this helps,my 3 cents worth, 37 RAGTOPMAN,an KEEP on FORDIN,,,, keep it original and keep in simple TomO 09-27-2010 @ 10:34 AM reply profile send p.m. Senior Posts: 7252 Joined: Oct 2009 I suspect your electronic distributor. Check your spark at idle when cold and when warm. You should have about 1/2 inch of blue spark when a wire is held close to a head nut. I would not try to rebuild your fuel pump. There have been problems with the current supply of diaphragms. Speedway has the Offenhauser fuel pump for your car. It has worked great on my car. http://www.speedwaymotors.com/ProductSummary.aspx?free_text|9/27/2010%201:30:55%20PM=fuel%20pump&deptId=0&free_text|9/27/2010%201:33:00%20PM=flathead Tom supereal 09-27-2010 @ 10:27 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 The best, and probably the only one, who really rebuilds coils is Skip Haney. He does it for $83 total cost, including shipping. You can reach him at 941/637-6698, or e-mail at skip@fordsrus.com "Vapor lock" claims have always dogged old Fords. Almost all the time, the coil faded when hot. We have a bunch of old coils, and none of them will work because the insulation deteriorated over time. See Skip's ad on page 98 of the most recent V8 TIMES. woodwagon47 09-27-2010 @ 9:26 AM reply profile send p.m. Member Posts: 16 Joined: Oct 2009 Need to know who does rebuild those coils. You have a good idea with the ice pack. I think I will try that. I have about 3 coils extra that I can play with.but I have to rebuild the water pump first. That is leaking. Henry should have mounted the coil in front of the radiator, that would keep the excessive heat away from it. woodwagon woodwagon47 09-27-2010 @ 9:21 AM reply profile send p.m. Member Posts: 16 Joined: Oct 2009 I just had a complete valve job done. This has happened before I had the valve job done. I replaced about 8 valves and valve guides, had the valves and seats ground and set them to the specs in the motor manual. woodwagon47 09-27-2010 @ 9:19 AM reply profile send p.m. Member Posts: 16 Joined: Oct 2009 I have installed an electronic distributor or a conversion on the car. It has no condensor. Who rebuilds coils for those V8,s Can you use the same coil used on a Model a as a test coil? 40guy 09-27-2010 @ 7:30 AM reply profile send p.m. Member Posts: 270 Joined: Oct 2009 It sounds like it's either the coil or the condenser or both. Sometimes on a hot day, gas with ethanol can cause "vapor lock" also, due to the ethenol lowering the boiling point of the gas. 37RAGTOPMAN 09-27-2010 @ 4:35 AM reply profile send p.m. Senior Posts: 1961 Joined: Oct 2009 woodywagon47 It sounds like a bad coil, try this warm the engine up till it starts to act up, shut in off, put a ice pack on the coil, once the coil is cold and engine hot see how it runs, if it runs good send the coil out to get rebuilt, there are several vendors in the V8 TIMES. if you have a fuel problem, either hot or cold should not matter, also check the ignition resister,make sure it has clean contacts. wiring termials and contacts,and is working properly make sure you find the problem before replacing any parts, also a little valve top oil [ MMO ] would not hurt anything, hope this helps 37RAGTOPMAN and KEEP on FORDIN,,,,,,!! This message was edited by 37RAGTOPMAN on 9-27-10 @ 4:47 AM

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