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Re: 72 Ford Pup won't keep runnin'


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Posted by Hobo,NC on September 13, 2011 at 18:24:53 from (71.30.80.14):

In Reply to: 72 Ford Pup won't keep runnin' posted by jahaze on September 13, 2011 at 10:57:44:

Dunno whats yer problem but I would eliminate fuel delivery... You will need a vacuum gauge,,, I would work from the tank side of the pump back... remove the inlet line at the pump and install a vacuum gauge,,, crank the engine over you should see at least 15" vacuum if not you have a restriction on the outlet side are a bad pump... If you have good vacuum work toward the tank are go directly to the tank its EZ enuff to get to...

I would check fuel pressure and volume if its off the vacuum check will nail the culprit,, I have NEVER seen the vacuum check fail me its something I always do on the hard pumps to get at,,, if a pump fails the vacuum check with the outlet side open its BAD I guarantee it (unless the pump drive is bad)... A pump will not pump what it can not suck...

Sum'n else to think about (seat tank),,, if you had the tank slap full you could throw the pump away and tie the inlet and outlet together... It will gravity flow till about 3/4... I have seen cracked hoses leak vacuum but not leak fuel on the tank side of the pump...

Most fuel pressure gauges have a vacuum scale its was not a freebee it was meant to be used its part of the check... :idea:

Fresh fuel is had to beat :wink:

This post was edited by Hobo,NC at 18:26:18 09/13/11.



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