need help
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Freshman User
Joined: Dec 2012
Posts: 34
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From: detroit
need help
i have installed a new ff and filled it with fuel,i have a electric fuel pump and have good fuel flow at the schrader valve but cant get fuel to injectors, only a little dribble every time it comes to that injector. had to take the housing off to install the oring so got lots of air in the lines, ive taken off one injector line trying to bleed. should i take them all off? it is cold here but i have put in diesel 911.
Post Fiend
Joined: Nov 2005
Posts: 7,437
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From: Charles Town, W bygod Va
I always loosen as many as I can get to easily, 4-5 of the m should be plenty. You only need to loosen them about half a turn. Holding the throttle wide open will help. It should start and run with the lines loose and will smooth out as you tighten each injector line. Give the starter plenty time to cool off between crank cycles.
Fleet Owner
Joined: Jul 2006
Posts: 20,345
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From: Mi'kma'ki
not sure why your having trouble.with an electrical fuel pump,i don't even bother filling the fuel filter up.no need.just turn the key to run and let it prime for a minute.then turn the key off and back on for another glow plug duration and crank until it starts or a max of 15 seconds.whichever comes first.allow 2 mins them repeat as needed.iv never noticed a poor start just after a fuel filter change like that though.just when i drain the ip to adjust the fuel do i ever need 2 or 3 15 sec crank durations.
how long are you cranking for? what was the reason for changing the filter? simply routine maintenance or........
how long are you cranking for? what was the reason for changing the filter? simply routine maintenance or........
Thread Starter
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Freshman User
Joined: Dec 2012
Posts: 34
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From: detroit
never seems to work that easy for me even with the electric pump always have to hold the shrader valve in till i get fuel, but i always have to take the houseing off the truck to get that stupid tiny o ring on houseing so i think that drains it all down...?
Postmaster
Joined: Dec 2011
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When you say a 'little dribble' to the injectors, you mean that you're getting fuel to them?
Remember, per-squirt, the amount is /really tiny/, especially unloaded/idling. As in, seems like only a couple of drops if you crack the line when it's idling. It's not like you open the line and fuel pours out or anything.
Remember that unlike a gas engine, the fuel-air ratio varies a lot, and the pump will put in only enough fuel to maintain whatever speed it's attempting to. So you will get very little at low speeds/low throttle positions.
Flooring it when attempting to push fuel through the lines is a very good idea, because it will put the /maximum/ fuel through the system. But remember that there still won't be very much.
Remember, per-squirt, the amount is /really tiny/, especially unloaded/idling. As in, seems like only a couple of drops if you crack the line when it's idling. It's not like you open the line and fuel pours out or anything.
Remember that unlike a gas engine, the fuel-air ratio varies a lot, and the pump will put in only enough fuel to maintain whatever speed it's attempting to. So you will get very little at low speeds/low throttle positions.
Flooring it when attempting to push fuel through the lines is a very good idea, because it will put the /maximum/ fuel through the system. But remember that there still won't be very much.
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