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1987 - 1996 F150 & Larger F-Series Trucks
Fuel pump prime

1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Fuel pump prime

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Old

Feb 18, 2015 | 05:23 PM

#16

daddylee100

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Elder User

Joined: Jun 2013

Posts: 548

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From: SoCal 909

I can prime it 2 times sometimes 3 but usually second prime and fires right up. And this is warm, after about 20 mins of engine shut down to about 2-3 hours. After that fires right up first prime. And it's just a longer crank when warm. Never not started on me.

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Old

Mar 20, 2015 | 01:45 PM

#17

daddylee100

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From: SoCal 909

Getting ready to decide on injectors or fuel pumps first. Any thoughts?

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Old

Mar 20, 2015 | 03:25 PM

#18

rla2005

Fleet Owner

Joined: Oct 2005

Posts: 20,784

Likes: 1,751

From: Kentucky

Some folks have suggested clamping off the fuel return line to eliminate the fuel check valves as a possible root cause.

If the pressure still bleeds off it's an injector problem.

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