new fuel pump and no fuel to the injector

**Elutheros** · 07-11-2012, 07:29 PM

87 Bronco II, with new tank, intank pump, filters, and I just replaced the high pressure pump after some poor running issues and tester showed just 20 PSI. Now, I just installed the new main pump and can't get any fuel pressure at the injector rail. Pumps both run when key is turned on and when cranking. Fuel line to the new pump has fuel in it (tank is full). No kinked lines and I did not change anything else. removed filter and blew low pressure air through both ends---no blockage. Thought I might have stupidly put the pump in backwards, but every diagram I can find shows the electrical connectors facing towwards the front of the vehicle and that's how I've got it mounted.

I'm concerned I will damage the new pump if I keep cycling it and it has no fuel in it. It did get warm after multiple on/off attempts to get it started.

What am I missing?

**a31ford** · 07-15-2012, 06:16 AM

This might sound dumb, but I had a chevy that had a fuel pump change, and would not suck fuel UNTIL, we disconnected the line on the tank side of the fuel filter (on the frame rail) AND, cycled the IGN key, once there was no pressure for the pump to work into, it primed, and "TaDa" worked great, we simply stuck the end of the line into a large pop bottle (plastic) and hit the switch for a second or two.....

Greg

07-11-2012, 07:29 PM	#1
Elutheros Premium Member Join Date: Jul 2011 Location: Central Texas Year: 1987 Make: Ford Model: Bronco II Engine: 2.9 now 5.0 later Class: 4X4 Used For: DD/Hunting Posts: 69 Rep Power: 4 iTrader: (0)	new fuel pump and no fuel to the injector 87 Bronco II, with new tank, intank pump, filters, and I just replaced the high pressure pump after some poor running issues and tester showed just 20 PSI. Now, I just installed the new main pump and can't get any fuel pressure at the injector rail. Pumps both run when key is turned on and when cranking. Fuel line to the new pump has fuel in it (tank is full). No kinked lines and I did not change anything else. removed filter and blew low pressure air through both ends---no blockage. Thought I might have stupidly put the pump in backwards, but every diagram I can find shows the electrical connectors facing towwards the front of the vehicle and that's how I've got it mounted. I'm concerned I will damage the new pump if I keep cycling it and it has no fuel in it. It did get warm after multiple on/off attempts to get it started. What am I missing? Last edited by Elutheros; 07-11-2012 at 08:39 PM. Reason: more oinformation
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07-15-2012, 06:16 AM	#2
a31ford Electronics GURU Join Date: Apr 2012 Location: Brandon, Manitoba Year: 1988 Make: Ford Model: Ranger XLT (Custom Frame) With a 3" body lift Engine: 2.9 Class: 4X4 Used For: Working on "Breakout Box for ECM's" Posts: 452 Rep Power: 8 iTrader: (0)	This might sound dumb, but I had a chevy that had a fuel pump change, and would not suck fuel UNTIL, we disconnected the line on the tank side of the fuel filter (on the frame rail) AND, cycled the IGN key, once there was no pressure for the pump to work into, it primed, and "TaDa" worked great, we simply stuck the end of the line into a large pop bottle (plastic) and hit the switch for a second or two..... Greg
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