Efuel Power Source? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 12 (permalink) Old 11-16-2019, 04:21 AM Thread Starter
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Efuel Power Source?

Where is a good place to tap into for power when the key is on only?
I read somewhere that the old fuel bowl heater wire could be used.
Where is a better place to tap into? I dont have very much experience playing electrician messing around in the fuse boxes...
Thanks.

95 Auto. 4.10 gears. SCLB. Baby Swamps Injectors, TS-6 chip with swamps tunes, DIY E-Fuel. AFE MaxFlow. Glowshift trans, pyro, and boost. 6.0 IC KC TP38R. Converted EBPV to exhaust brake.
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post #2 of 12 (permalink) Old 11-16-2019, 05:20 AM
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Re: Efuel Power Source?

I tapped into a fuse into the underhood fuse box, i forget the exact number, but it was the only one that had power while key on and while cranking, kept the pump on the entire time. Just get a test light out and start checking. After I tapped into the fuse, I mounted my relay right on the firewall next to it.


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post #3 of 12 (permalink) Old 11-16-2019, 05:43 AM
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Re: Efuel Power Source?

The #22 fuse under the hood powers the fuel heater and only has power with the key on.

However I would use the wire from the fuel heater connection on the filter housing just because it is already there and won't be used when you convert over to Efuel.

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post #4 of 12 (permalink) Old 11-16-2019, 06:22 AM Thread Starter
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Re: Efuel Power Source?

That what I was thinking Bugman.

I'll just run it to wherever I place the relay and it should be good. Then just hook the other 3 to power, the pump and the ground.

If all goes well, it should be running by tomorrow.

Will I run into a problem of priming it, or will I just have to cycle the key a few times?

95 Auto. 4.10 gears. SCLB. Baby Swamps Injectors, TS-6 chip with swamps tunes, DIY E-Fuel. AFE MaxFlow. Glowshift trans, pyro, and boost. 6.0 IC KC TP38R. Converted EBPV to exhaust brake.
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post #5 of 12 (permalink) Old 11-18-2019, 08:20 AM
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Re: Efuel Power Source?

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Originally Posted by Cumminsdurastroke View Post
That what I was thinking Bugman.

I'll just run it to wherever I place the relay and it should be good. Then just hook the other 3 to power, the pump and the ground.

If all goes well, it should be running by tomorrow.

Will I run into a problem of priming it, or will I just have to cycle the key a few times?

Just turn the key on and let the pump run for a little bit. You will hear the sound change as the air is pushed through the system. Eventually the air will make it back to one of the tanks through the return line and you'll be good to go.

Why are you adding a relay?

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post #6 of 12 (permalink) Old 11-19-2019, 05:59 AM Thread Starter
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Re: Efuel Power Source?

I read on a lot of write ups that people had put in relays. So I added one in. Not sure if it really needs one, but it has one now. so far everything is working. I acidentialy had the pump put in wrong. had a 50/50 shot and didnt get it right. Pulled the filters and realized that it was sucking air out of the head going to the motor. flipped it around and cycled it a few times until it flowed through the water separator and pump. Then put in place the main filter and waited for it to prime for a while giving it a few cycles.Then once primed, adjusted the FPR until around 65psi. Started it up and checked for leaks.

What is a good recommended fuel pressure to run at?

95 Auto. 4.10 gears. SCLB. Baby Swamps Injectors, TS-6 chip with swamps tunes, DIY E-Fuel. AFE MaxFlow. Glowshift trans, pyro, and boost. 6.0 IC KC TP38R. Converted EBPV to exhaust brake.
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post #7 of 12 (permalink) Old 11-19-2019, 06:34 AM
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Re: Efuel Power Source?

Quote:
Originally Posted by Cumminsdurastroke View Post
I read on a lot of write ups that people had put in relays. So I added one in. Not sure if it really needs one, but it has one now. so far everything is working. I acidentialy had the pump put in wrong. had a 50/50 shot and didnt get it right. Pulled the filters and realized that it was sucking air out of the head going to the motor. flipped it around and cycled it a few times until it flowed through the water separator and pump. Then put in place the main filter and waited for it to prime for a while giving it a few cycles.Then once primed, adjusted the FPR until around 65psi. Started it up and checked for leaks.

What is a good recommended fuel pressure to run at?
Relay or no relay, as long as it all works that's all that really matters. Maybe someone can chime in about the benefit of running a relay.

I have always read/heard that the fuel pressure should be set at 60psi. It might be different for different applications.

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National Spring Leafs, E-Fuel, John Woods Transmission, Detroit Lockers Front & Rear, 4:56 Gears, Michelin XML Tires, Custom RSK...

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post #8 of 12 (permalink) Old 11-19-2019, 06:38 PM
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Re: Efuel Power Source?

A relay is always very smart, I'm running a larger than normal relay that will eventually power twin SD pumps. Running off just the fuel bowl heater might overload the wire too, who knows if the wire is thick enough, or if the power source can supply the load.


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post #9 of 12 (permalink) Old 11-19-2019, 07:00 PM
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Re: Efuel Power Source?

It isn't the size of the wire but the amperage of the load. I am sure that a fuel pump will draw less than the fuel heater but a relay that is controlled by a key on source like the heater wire and a fused load wire going to the pump is always smart

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post #10 of 12 (permalink) Old 11-20-2019, 06:08 AM Thread Starter
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Re: Efuel Power Source?

The fuel heater wire should just be providing the power to operate the relay. I don't imagine it will draw very much current. The main power is coming from the battery which also has a 25AMP fuse between the two as well.

95 Auto. 4.10 gears. SCLB. Baby Swamps Injectors, TS-6 chip with swamps tunes, DIY E-Fuel. AFE MaxFlow. Glowshift trans, pyro, and boost. 6.0 IC KC TP38R. Converted EBPV to exhaust brake.
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