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Re: Fuel System Problems
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Home away from home
 
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Tank is probably in need of a good cleaning, I'd start there.
Posted on: 2009/9/10 22:01
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Re: Fuel System Problems
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Forum Ambassador
 
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And if the tank doesn't do it, if the carb sat full of gas and evaporated, it may have a good layer of varnish, crud and dried out seals messing things up.
Posted on: 2009/9/10 22:10
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Re: Fuel System Problems
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Home away from home
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First off replace all the rubber hoses, if for nothing else than safety's sake...but you could also have a cracked one on the suction side and it's sucking air instead of catching a prime and sucking gas.
Regarding the fuel pump, was it fresh stock or old NOS? The rubber diaphragms from days gone by are not compatible with today's gas and even if they were, decades of sitting on a shelf didn't do the rubber any good.
Posted on: 2009/9/10 22:24
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Who has my future '56 Patrician? Please let me know!
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Re: Fuel System Problems
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Forum Ambassador
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Inspect the steel fuel lines, as well. Look for rusty areas that may have started to leak; a small leak sucking air upstream of the fuel pump would cause a problem similar to vapor lock.
If varnish is a concern, try blowing compressed air through the line to check for obstruction. If the steel line proves to be solid, but restricted, you may want to try fishing some steel wire through it, then flushing with an aerosol solvent - like brake cleaner.
Posted on: 2009/9/11 7:35
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Re: Fuel System Problems
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Forum Ambassador
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A very positive way to check a fuel line for leaks is to pull a vacuum on it, plug the ends, and see if it will hold a vacuum overnight.
Posted on: 2009/9/11 8:27
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Re: Fuel System Problems
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Home away from home
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this was my problem as well, the tank turned out the be the problem as it was a quarter of the way full of nasty thick goop, and I guess with all the goop sitting there it really did a number on the bottom of my tank to point that the tank is useless ----- every one of these answers are great for you and very true but in my case the tank was the root of the problem and if not attended to, would have ruined any work done on the rest of the fuel system
Posted on: 2009/9/11 8:54
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Re: Fuel System Problems
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Forum Ambassador
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Quote:
...pull a vacuum on it, plug the ends, and see if it will hold a vacuum overnight. Hmm, sounds like another good use for my MityVac handheld vacuum pump (one of the best tool investments I ever made).
Posted on: 2009/9/11 9:07
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Re: Fuel System Problems
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Home away from home
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Quote:
Toss a match down the filler and stand back...you might want to make sure your fire insurance is paid in full before doing so...
Posted on: 2009/9/11 14:25
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Who has my future '56 Patrician? Please let me know!
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Re: Fuel System Problems
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Home away from home
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Quote:
I think if you were to have thrown a match down my old tank you would be disappointed!! i don't think anything in there would have burned, it might have thrown the match back at you as it cussed you out for waking it up
Posted on: 2009/9/13 19:48
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