| fordmaroon | -- 02-05-2010 @ 9:56 AM |
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Having a problem getting fuel from the tank, to the fuel pump-I tested the pump out of a can of gas,sat lower then the pump and the gas flowed out fine! I was pumping it by hand so I know the pump is good I tried priming the bowel and still nothing comes out of the tank ,,-I put 10 Gallons of fuel in the tank when I hook up the pump to the fuel lines that go to the tank I get no fuel--What is stopping the fuel flow from the tank to the fuel pump??I"ve tried everything but dropping the tank--Does the sending unit have anything to do with the flow of fuel to the pump??? I"m really out of ideas,Also the pump piston is working-when I hook it up and hit the starter,I can see it moving up and down--Any suggestions would be greatly appreciated--Thanks Vince
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| ford38v8 | -- 02-05-2010 @ 10:43 AM |
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Vince, try blowing into the fuel line. you've likely got a hunk of debris that stops the flow. When it has cleared, try your pump again. It will happen again, so be prepared to replace your fuel line, and clean/seal your tank. As a side note, install a fuel filter before the pump. Alan
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| fordmaroon | -- 02-05-2010 @ 1:05 PM |
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Thanks Alan--I did replace the fuel line and the guage line-I'm on my 2nd fuel pump-Cleaned out the tank before I re-installed it-Replaced the carburator-The only thing I didn't do was replace the sending unit-It looked like new --Now Im woundering if that unit would stop the flow of Fuel into the Pump--To drop the tank now, I would have to remove the spare-The spreader bar,Both Fork Horns -Both tailights etc etc-I really dont want to do this again unless that is the culprit--Could that rod that works off the cam shaft, that controls the diafram be worn??How can I check it.?How far should that rod be moving up and down??It is moving when I hit the starter--Hair is getting grayer by the day--What a mystery?? Thanks (anyone) for any advise- Vince
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| ford38v8 | -- 02-05-2010 @ 4:48 PM |
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Vince, Cleaning the tank without sealing it is a never ending job. A 78 year old tank will have lost it's tern coating long ago, and the alcohol laced fuel we get today attracts moisture and induces rust. Everything that the fuel comes in contact with needs to be protected. You do have a restriction in your line, even if new. Blow it back to the tank and you'll be good till next time it clogs. The other possibility is your flex line. These are of rubber and collapse inside from the new fuel. There are new fuel resistant lines advertised in the V8 Times. Alan
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| fordmaroon | -- 02-10-2010 @ 5:36 AM |
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Alan-I blew air thru the line,back to the tank-When i sucked on the line(with my mouth)didn't know any other way--Fuel flowed out-Then I hooked up the fuel pump and worked it manually by hand-Fuel flowed out-Then when I hooked it to the motor,nothing happened-Then I removed the pump and added a spacer into the arm that pumps the diafram and reinstalled it and gas flowed out-Hooked it up to the carb , and the engine started running-I think the rod that controls the pump was worn-the spacer seemed to move the rod up and down further-Now i am rebuiding the carb because the chock fins are not opening-But the car is running--feel better all ready--thanks for the in-put, i did everything you said-and its running-Vince
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| ford38v8 | -- 02-10-2010 @ 12:14 PM |
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Vince, Glad you got it running! You've isolated the problem, but with the spacer, you've fixed the symptom rather than the problem. Those spacers have been around forever, and are a temporary solution only. The operating pushrod doesn't wear, but the fuel pump rocker arm does wear at the pivot point. This is where you've lost the pump action, in the slop at the pivot. You'll need to rebuild your pump with a new rocker arm. Alan
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| fordmaroon | -- 02-20-2010 @ 3:48 PM |
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Alan Ben busy digging out of this mess we got all week every day--Ordered a new fuel pump..Now I'm into re-wireing everything--Now lets see what problems I run into on this stage of the re-build--Thanks for the in-put on the fuel problem--Also added a filter between the pump and the Carb-Haven"t been able to run it much, because of the confined space Im working in.. Carbon Monoxide and me dont get along to well.. Again Thanks Vince
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| ford38v8 | -- 02-20-2010 @ 7:05 PM |
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Vince, because of the vulnerability of the fuel pump's valving, a fuel filter is best installed before rather than after the pump. For your rewire job, be sure that all connectors are soldered rather than just crimped, and that bullets and terminus points are protected with dialectric grease, available everywhere. I thought all V8ers started out sniffing their Dad's exhaust pipes. what gives with your peculiar allergy? Alan
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| 1932BB | -- 02-21-2010 @ 11:15 AM |
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I have had trouble with the paper pleated type gas filters when installed before the fuel pump. They don't seem to work without significant pressure. Try a screen type before the fuel pump. A popular one looks like a glass tube and has a remeoveable and cleanable screen.
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| trjford8 | -- 02-21-2010 @ 6:28 PM |
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I avoid the glass tube type filters like the plague. If the glass happens to bump against metal it will break and you have an instant car fire. I know of two old cars that had car fires because of these filters. Also because of vibration they can unscrew and leak gas.
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| 1932BB | -- 02-22-2010 @ 7:51 AM |
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Good point. The glass body filters must be mounted carefully and may be risky in the engine compartment, but if mounted well near the tank, maybe OK. Is my theory correct on the problems of using the paper pleated type before the fuel pump? Are there other types of screen type filters that are available?
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| 35ford | -- 07-14-2010 @ 6:00 PM |
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I have had good results checking the fuel pump and lines on a fresh start up by leaving the nuts off the fuel pump stand with everything hooked up from the tank to the pump. Then by looking at the pump and turning the engine over by hand until the pump is at the top of the cycle I then manually push the pump down several times until I have fuel comming out the pump discharge line into a container. This tests the system. Works for me.
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| TomO | -- 07-17-2010 @ 9:03 AM |
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The filter that I use is clear, but it is not glass. Tom
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| 37RAGTOPMAN | -- 08-18-2010 @ 10:02 AM |
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Also check your gas cap, to make SURE IT IS VENTED, ALSO use a gas tank from a outboard motor, with just gas in it,not mixed with oil, plumb this up ,directly to the FUEL pump, next to the car on a stool about the level of the fuel tank in the car,, if the pump works, you have a problem in the line or in the tank in the car, you have to rule out the problems, one by one, hope this helps 37 RAGTOPMAN
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