6.4 l low pressure lift pump
#1
6.4 l low pressure lift pump
If your Ford 6.4 loses all power when towing especially up hills, and the dealer says they can't find anything wrong.
Demand they replace the frame mounted low pressure fuel pump, also known as the lift pump.
Mine only acted up after the reflash of the <acronym title="Power train Control Module">PCM</acronym> and only when the <acronym title="Power train Control Module">PCM</acronym> put the truck in Regen.
The techs think it was because it lowers the high pressure out of the injector pump during regen and if the lift pump is working but not up to snuff then you don't get enough fuel in regen.
Fixed my truck.
Now if the moron engineers hadn't built an engine to support the OPEC bastards it would be a great truck.
Demand they replace the frame mounted low pressure fuel pump, also known as the lift pump.
Mine only acted up after the reflash of the <acronym title="Power train Control Module">PCM</acronym> and only when the <acronym title="Power train Control Module">PCM</acronym> put the truck in Regen.
The techs think it was because it lowers the high pressure out of the injector pump during regen and if the lift pump is working but not up to snuff then you don't get enough fuel in regen.
Fixed my truck.
Now if the moron engineers hadn't built an engine to support the OPEC bastards it would be a great truck.
#2
You can't be serious.
They THINK it lowers the pressure during regen?
You need to find a new dealership.
Honestly.
White smoke in cold ambients is normal and the amount will be increased during regeneration.
Powertrain power is limited to 325 horsepower (HP).
Engine responsiveness may be slightly different than normal operation.
During initiation of regeneration, exhaust smell may be noticed - especially on new vehicles.
Powertrain sound will be different including air induction noise (including flutter on deceleration or engine shut down), exhaust noise, and changes in engine radiated noise.
During regeneration, exhaust temperatures are elevated.
They THINK it lowers the pressure during regen?
You need to find a new dealership.
Honestly.
White smoke in cold ambients is normal and the amount will be increased during regeneration.
Powertrain power is limited to 325 horsepower (HP).
Engine responsiveness may be slightly different than normal operation.
During initiation of regeneration, exhaust smell may be noticed - especially on new vehicles.
Powertrain sound will be different including air induction noise (including flutter on deceleration or engine shut down), exhaust noise, and changes in engine radiated noise.
During regeneration, exhaust temperatures are elevated.
#3
i have a 2008 F450 6.4 diesel. i changed the fuel filters today. The low pressure frame mounted pump runs, but no fuel. Ford dealer says it also has a pump in the tank. i went thru all the procedures to bleed the line, no fuel. does anyone know if there is a pump in the tank on the diesel, or is that for gas only? how do i check both pumps, without buying new ones?
Thanks for any info.
Thanks for any info.
#9
#10
i have a 2008 F450 6.4 diesel. i changed the fuel filters today. The low pressure frame mounted pump runs, but no fuel. Ford dealer says it also has a pump in the tank. i went thru all the procedures to bleed the line, no fuel. does anyone know if there is a pump in the tank on the diesel, or is that for gas only? how do i check both pumps, without buying new ones?
Thanks for any info.
Thanks for any info.
Will th check lights reset once fixed or do I need to do that ? Sorry for my lack of knoweledge on the subject. I was always a 5.9 cummis 12 valve fan.