IP...Manual or Electric? That is the question! - Diesel Forum - TheDieselStop.com
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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 09-18-2007, 09:46 PM   #1 (permalink)
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IP...Manual or Electric? That is the question!

suggestions?

Where do ya find an electric pump for these? Do they mount in the same place as the manual? Is it a complicated swap? and is there much of an advantage??

Thanks!
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Old 09-18-2007, 10:39 PM   #2 (permalink)
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Re: IP...Manual or Electric? That is the question!

electric IP?? you mean lift pump?
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Old 09-18-2007, 10:46 PM   #3 (permalink)
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Re: IP...Manual or Electric? That is the question!

i dont think they make them too reliant on the mechanical pump sets timing etc and it would then need ele ignation box or the likes to control the injection time and that just too expensive

but may be wrong
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Old 09-19-2007, 10:50 AM   #4 (permalink)
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Re: IP...Manual or Electric? That is the question!

Napa carries electric fuel pumps for under $40, all you need is a max of 7psi. Find a spot on your wiring harness that only gets power when the key is turned (And make sure its not your gps, otherwise it wont get power all the time), take one wire of the pump to that, then ground it. cut the hose that goes to your fuel filter and attach both ends to the pump. The mounting bracket i took to my alternator tensioner bolt. Mounted up nice. About a 15 min job once the power is found.
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Old 09-19-2007, 11:40 AM   #5 (permalink)
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Re: IP...Manual or Electric? That is the question!

try and mount the pump just ahead of the switching valve--that way its pushing the fuel forward--instead of pulling it--
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Old 09-19-2007, 11:49 AM   #6 (permalink)
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Re: IP...Manual or Electric? That is the question!

are you guys thinking fuel pump or the pump on the engine that controls when the fuel is delivered to the injector?
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Old 09-19-2007, 01:46 PM   #7 (permalink)
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Re: IP...Manual or Electric? That is the question!

I know of no Electric IP to put on these machines so I am assuming he meant an electric fuel pump to replace the mechanical lift pump.
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Old 09-19-2007, 02:16 PM   #8 (permalink)
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Re: IP...Manual or Electric? That is the question!

got ya thats what i thought
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in progress western style mirrors, holset turbo, airhorns, and some other goodies
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Old 09-19-2007, 03:51 PM   #9 (permalink)
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Re: IP...Manual or Electric? That is the question!

So what do you do with the old pump? Do you remove it? Then I guess that you would need a plate or something to cover the hole. Can you just leave it in place and not worry about it and just leave it disconnected?
Thanks
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Old 09-19-2007, 04:32 PM   #10 (permalink)
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Re: IP...Manual or Electric? That is the question!

just put the new pump in. Mine failed so i through an electric one on and never played with the lift pump.
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Old 09-19-2007, 05:44 PM   #11 (permalink)
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Re: IP...Manual or Electric? That is the question!

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: OPTLOCK</div><div class="ubbcode-body">So what do you do with the old pump? Do you remove it? Then I guess that you would need a plate or something to cover the hole. Can you just leave it in place and not worry about it and just leave it disconnected?
Thanks
</div></div>
Most folks take the old pump out and cover the hole with a chevy block plate. I'm not sure what engine type (454 maybe?), but I know I've seen it on this forum, just do a search for it...;-)
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Old 09-19-2007, 05:56 PM   #12 (permalink)
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Re: IP...Manual or Electric? That is the question!

it will look like this

http://farm1.static.flickr.com/159/3...d0d2a5.jpg?v=0
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Old 09-19-2007, 06:01 PM   #13 (permalink)
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Re: IP...Manual or Electric? That is the question!

A lot of good information in this old post about putting on an electric fuel pump.

Click Here

Heath
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Old 09-24-2007, 01:54 AM   #14 (permalink)
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Re: IP...Manual or Electric? That is the question!

The blocking plate you need is for a big block Chevy like someone mentioned above (454). The block is machined with a circular ridge that the plate will ride up on if it's a bit oversized, and leak. Mine rode up on the ridge so I ended up grinding the plate down a bit for a snug fit.
When I overhauled my 6.9L, I found pump arm parts in the oil pan and a lot of damage to the camshaft pump lobe. Red pump is the way to go.
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Old 09-25-2007, 11:39 PM   #15 (permalink)
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Re: IP...Manual or Electric? That is the question!

Make sure you don't get a plate with the Chevy logo on it!
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