Just installed e pump, need help!
Post Fiend
Joined: Nov 2005
Posts: 7,437
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From: Charles Town, W bygod Va
I'm sure your pump is getting plenty of power through the relay, but maybe using the FSS to trigger the relay is causing the FSS to not get enough juce to open. If you unplug your relay and jump across the B+ and fuel pump terminals that would make the pump run without messing with the FSS circuit.
Logistics Pro
Joined: Sep 2007
Posts: 3,737
Likes: 179
From: Western Mass
You shouldn't see any fuel come out of the injection lines unless the engine is turning. The injection pump needs to be turning to push fuel out to the injectors, the drop you saw would be any fuel left in the line from before.
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Freshman User
Joined: Feb 2012
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Thanks alot for all the help guys
Fleet Owner
Joined: Jul 2006
Posts: 20,357
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From: Mi'kma'ki
good call tecgod13
your going to find that the need to screw around with bleeding injection lines is a thing of the past.if you ever run out of fuel or change an ip,just crank.she'll fill the ip and fire off by herself in just 3 15-20 sec crank sessions under the worst case scenario now.
like tec explains,the e-pump can only do the pumping to your ip.your ip takes it from there delivering your high pressure.though as you just learned,only when running/cranking.
what's odd though is that your ip should have remained full during your lift pump swap and you shouldn't have run into this issue at all.
i guess what might have happened is that you thought you needed to bleed the ip,and rather than trying to simply start the engine once you swapped to the e-pump,you actually emptied it yourself by cracking some lines,and then cranking.
like tec explains,the e-pump can only do the pumping to your ip.your ip takes it from there delivering your high pressure.though as you just learned,only when running/cranking.
what's odd though is that your ip should have remained full during your lift pump swap and you shouldn't have run into this issue at all.
i guess what might have happened is that you thought you needed to bleed the ip,and rather than trying to simply start the engine once you swapped to the e-pump,you actually emptied it yourself by cracking some lines,and then cranking.
Logistics Pro
Joined: Sep 2007
Posts: 3,737
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From: Western Mass
Also, don't feel stupid, most people these days don't even know how to change a tire. Diesels can also be trickier than gassers since there are fewer of them, and fewer people that know how they work.
Just to be sure though, you got the truck running?
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Joined: Feb 2012
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cracked the lines and cranked the engine, sure enough the fuel started spewing out. I tightened them back down, hit the starter, and it fired without hesitation. My brother was there making fun of me because his 12v cummins started. He stopped that when he saw the idi fire up as quick as it did.
it only has 40k miles on it
it only has 40k miles on it
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