Killing Fuel Pumps

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Jul 6, 2013 | 09:34 AM

#16

elgemcdlf

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From: Alton, MO

Rust will cut the diaphragm in the pump

Jul 6, 2013 | 11:25 AM

#17

StanJo

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From: Fittstown, OK

Kinda thought the oil filter might raise some eyebrows but poor people have poor ways. It was there, I was there. What could possibly go wrong? Heck it has a bypass and everything. lol Anyway, the pump filter in both pumps didn't look that bad. I've taken the things out that were totally caked in rust and still worked. These had a little in the bottom, nothing to panic about. Also the way they are going out is weird, no cough or sputter, just bang. Got Autozone to cough up another one this morning. Gave 'em the usual Chinese crap speech. Not sure that will work again. It's running for the moment.

Jul 6, 2013 | 12:03 PM

#18

StanJo

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From: Fittstown, OK

Just finished a 5 mile test drive with no problems. Something I said before was kinda dumb. If the pump is pulling against a clog as in clogged filter or collapsed line or whatever the first result is no fuel to the engine. Engine dies from lack of fuel before jacking up the pump I would think. If all that is so then I'm still lost as to why the pumps are dying. That wouldn't happen with an electric pump 'cause they wouldn't know when to quit so it would fry. Could the cam drive somehow over work or overheat 'em?

Jul 20, 2013 | 12:52 PM

#19

StanJo

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From: Fittstown, OK

So just got back to this. Cut one of the pumps open, it died from heat. As an achievable fact you can place rust as dynamite filter plugger (really small stuff) and it will work the pump to death real quick. New tank going in next week. By the way, the oil filter seems to work fine.

Jul 20, 2013 | 01:28 PM

#20

RichS2659

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From: North Pole, Alaska

With using an oil filter as a fuel filter, you just created a new problem. Gasoline is a super solvent, more so than oil. An oil filter isn't made to resist the solvency of gas so it will slowly self-destruct and flow more crap through your fuel line to your carb. Do yourself a favor and buy a fuel filter made to the same configuration (threads, gasket, size) as your oil filter. For example, the ones you see on fuel pumps.

Jul 20, 2013 | 05:11 PM

#21

abe

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From: Central PA

While we are on the topic, is it better to have the fuel filter between the tank and the rule pump or between the pump and the carb?

Is it OK to have 2 fuel pumps, or is that too much for the pump to push and pull?

Jul 21, 2013 | 08:49 PM

#22

Mejamz Ewe

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Quote:

Originally Posted by StanJo

Having a heck of a problem dead pumps. Two so far. Got rust in the tank after letting it set with a bad tranny. Funny thing though, the pump filter don't seem to be that bad. Kind of strange and has me a little flumxed. Any ideas?

I own a 1970 F250 and just went through the entire fuel system...
1. if you have rust in your tank, it will kill pumps, filters, and even the carb given enough time...
2. Do not flush tank with water, use 85 octane to clean it then throw away the fuel once it has been used for cleaning... be sure to swash the 2 gallons around a lot before dumping and repeat at least once, then take the tank for a new inner seal coat as it is cheaper than buying a new tank usually...
3. Place an inline filter between the tank and the pump and another between the pump and the carb to reduce possible contamination from future sediment...
4. Rust can get through filters if fine enough so try to cover your feed line with a cheese cloth at the connection until you get the tank repaired to reduce the gunk flow... just wrap the cheese cloth around the connector, use a 3 inch piece of rubber fuel line to accommodate the cloth so it does not wrinkle and note, cheese cloth clogs quickly so I would get that tank fixed ASAP... cheese cloth will get you home in a pinch... hope this helps...