fuel system operating pressure pre and post e fuel - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 02-03-2012, 06:40 AM Thread Starter
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fuel system operating pressure pre and post e fuel

looking for a couple numbers here:

stock mechanical pump output
stock fuel pressure reg setting

SD electric pump output
aftermarket pressure reg setting

97 OBS F250 Ext Cab Long Bed 4x4 ZF Swapped

VO conversion, TS 6 Position Chip, E Fuel, 6637 Filter, EBPV delete + PCV Reroute, Diamond Eyes 3" Downpipe

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post #2 of 7 Old 02-03-2012, 04:28 PM
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I have a fuel pressure gauge on my truck, mech fuel pump, i see a little under 50 psi at idle. I hear that most people with e fuel set the regulated at 65psi

94.5 F250 Reg Cab 4x4 5 speed 4.10 276000 plus miles

97 F350 Crew Cab LB 4x4 5 speed 3.55 320000 plus miles (parts truck)



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post #3 of 7 Old 02-04-2012, 09:23 AM Thread Starter
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So 50 PSI is what the stock reg runs at? Whats the reasoning for setting the adjustable reg higher?

97 OBS F250 Ext Cab Long Bed 4x4 ZF Swapped

VO conversion, TS 6 Position Chip, E Fuel, 6637 Filter, EBPV delete + PCV Reroute, Diamond Eyes 3" Downpipe

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post #4 of 7 Old 02-04-2012, 01:33 PM
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according to Jim at rosewood the optimum pressure for our injectors is 65 psi

94.5 F250 Reg Cab 4x4 5 speed 4.10 276000 plus miles

97 F350 Crew Cab LB 4x4 5 speed 3.55 320000 plus miles (parts truck)



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post #5 of 7 Old 02-04-2012, 01:35 PM Thread Starter
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does that apply to stock injectors or aftermarket?

97 OBS F250 Ext Cab Long Bed 4x4 ZF Swapped

VO conversion, TS 6 Position Chip, E Fuel, 6637 Filter, EBPV delete + PCV Reroute, Diamond Eyes 3" Downpipe

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post #6 of 7 Old 02-04-2012, 01:41 PM
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i would assume all, but i don't know never thought about it

94.5 F250 Reg Cab 4x4 5 speed 4.10 276000 plus miles

97 F350 Crew Cab LB 4x4 5 speed 3.55 320000 plus miles (parts truck)



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post #7 of 7 Old 02-04-2012, 01:45 PM
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Jim recommends 65 PSI for all injectors in the PSD, stock and aftermarket.

When I was running the stock fuel system along with the BB mod, I was seeing about 55 PSI at idle. I would say when running you could lose up to 5-10 PSI with the stock pump.

Now that I am running the efuel setup, I have my system regulated to 66 PSI at idle. When driving, it dips down to 65 PSI.

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