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Priming fuel pump

 
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Feltron  



Joined: 11 Jul 2010
Posts: 44
Location: Port Murray NJ

PostPosted: Sat Jun 11, 2011 11:53 pm    Post subject: Priming fuel pump Reply with quote

My fuel pump recently went bad on my '78, I have the replacement and I have it installed however the pump cant get any of the gas out of the tank. The line behind the pump is bone dry, I've tried priming it by pouring gas into that line but to no avail. Is there any way I can prime the fuel pump so that it will have enough suction to start getting the gas moving?
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89' Ranger with a custom front end and 924 bucket seats

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Brendan  



Joined: 04 Jan 2011
Posts: 63
Location: Maine USA

PostPosted: Sun Jun 12, 2011 1:20 am    Post subject: Reply with quote

I recently pulled my fuel pump, and was surprised to see only a drip of fuel come out of the prefilter. I was prepared for a deluge, because the only thing that should have been slowing the fuel down was the prefilter.

As it turned out, the tank was full of sludge. I had to pull the sender to figure that out. Poke a rod down into the sump, if you can, and see if it's full of sludge.

Probably, you'll need to take off the plate at the bottom of the sump, and start digging out the sludge. Plan on a can of brake cleaner, nitrile gloves and compressed air to blow out the fuel line fitting. The sludge doesn't dissolve in gas, but brake cleaner will dissolve it. I pulled about a cup of sticky brown sludge from the tank sump. I bet this is what killed your fuel pump.
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Joes924Racer  



Joined: 03 Nov 2002
Posts: 11964
Location: Oregon, Denver Colorado native!

PostPosted: Sun Jun 12, 2011 4:28 am    Post subject: Reply with quote

Theres a intank pump also...assuming of course the external is the 1 you
replaced. the tank can be dropped & cleaned also with out to much hassle.
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Feltron  



Joined: 11 Jul 2010
Posts: 44
Location: Port Murray NJ

PostPosted: Sun Jun 12, 2011 5:20 am    Post subject: Reply with quote

I was under the impression that the 78 didn't have a in tank pump because that's what the tec section says. Ill try looking for the sludge in the tank but its brand new gas, the pre filter is clean and I can hear bubbles when I blow into the hose to the tank. Its rainy here today so I won't get to it till tomorrow but thanks all for the input.
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the_mad_electrician  



Joined: 16 Nov 2009
Posts: 1073
Location: Central Georgia

PostPosted: Sun Jun 12, 2011 6:40 am    Post subject: Reply with quote

My 77 did not have a intank pump but there were changes in 77.5
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Joes924Racer  



Joined: 03 Nov 2002
Posts: 11964
Location: Oregon, Denver Colorado native!

PostPosted: Sun Jun 12, 2011 7:22 am    Post subject: Reply with quote

Oh yea that's right my bad.
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1980 porsche Turbo 931GT Replica
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Feltron  



Joined: 11 Jul 2010
Posts: 44
Location: Port Murray NJ

PostPosted: Sun Jun 19, 2011 10:06 am    Post subject: Reply with quote

Thanks for the help everyone, turns out what happened was my fuel pump burnt out because someone siphoned my gas. It starts now...
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78' 924 beggin to get on the track
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