EFI to Carb - Fuel Pump - Defender Source
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  #1  
Old May 3rd, 2016, 09:49 PM
bluewave
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John
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EFI to Carb - Fuel Pump

Okay, Considering EFI to carb for the 3.9 I have. Before any body goes nutzo. i know. but im chasing tons of electrical gremlins.

One question i keep bumping into: The fuel Pump

I looked at past posts. Lot of mention that they left fuel pump in by used a regulator with return to keep PSI below 7/5.5 . Problem i see with this is one day the regulator goes out, then it floods the carb bowl.

So, anyone have ideas what to do with the fuel pump. It has two sets of wires. Was thinking about messing with those and just using the float readout, but thats all theory right now. Gut it to what level? throw it out? use it?

Any help much appreciated
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  #2  
Old May 3rd, 2016, 10:11 PM
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John
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I just happen to have one that I was going to post, Airtex E2485, was going into my new to me V8 rover but some where along the way a PO had chopped up the pick up and fitted an external pump.

PM if interested $35 shipped
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  #3  
Old May 3rd, 2016, 11:36 PM
bluewave
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John
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Thanks, but I have a holley fuel pump...

Trying to understand what to do with the existing fuel pump in the take.
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  #4  
Old May 4th, 2016, 07:21 AM
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J. Michael McCaig
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Since you already have a replacement pump, I would pull the pump/sending unit out of the tank, remove the high pressure pump from the assembly, replace it with a short piece of fuel line, and reinstall the sending unit assembly. I have done this when I used a later model fuel tank in an earlier vehicle.
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Old May 4th, 2016, 07:29 AM
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Bill Adams
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I am pretty sure you don't have to do anything at the tank end. The fuel pump is a gerotor type, so it isn't blocking the fuel line or anything.
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Old May 7th, 2016, 12:23 PM
bluewave
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John
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JMM, thanks. I was considering pulling the two wires to the pump and leaving the two wires to the float. i havent checked the diagram but was thinking would allow to read float and alleviate any wiring dangling. I am re-wiring this anyhow. You think this setup good or bad?
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Old May 7th, 2016, 12:39 PM
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Jeff B
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I did as JMM described when I converted my LWB to diesel.
So no pump in there any more, just a signal from the float.


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