Help with Hard Start - Injector Pump?
Thread Starter
|
Mountain Pass
Joined: Feb 2002
Posts: 243
Likes: 1
From: Houston USA
Help with Hard Start - Injector Pump?
History
0 F350, 7.3. Bought as project truck. Was horribly maintained by previous owner. Had fuel leaks everywhere, replaced return line injector o-rings, fixed filter housing, using one piece fuel filter. New lift pump. Not a drop of fuel now. Problem, I’m having is seems like pump is losing its prime. Once started it runs good until next morning, it is extremely hard to start. I was thinking, its sucking in air between tank and pump so I temporarily run one fuel line hose directly from one tank to the pump. It runs good, but next day I’m back to hard starting. BTW, it has a new starter, two very good batteries, it does turn over fast during starting. Do you think I have a problem with my injector pump? I’m starting to pizzed off at this thing. Any help would be appreciated.
0 F350, 7.3. Bought as project truck. Was horribly maintained by previous owner. Had fuel leaks everywhere, replaced return line injector o-rings, fixed filter housing, using one piece fuel filter. New lift pump. Not a drop of fuel now. Problem, I’m having is seems like pump is losing its prime. Once started it runs good until next morning, it is extremely hard to start. I was thinking, its sucking in air between tank and pump so I temporarily run one fuel line hose directly from one tank to the pump. It runs good, but next day I’m back to hard starting. BTW, it has a new starter, two very good batteries, it does turn over fast during starting. Do you think I have a problem with my injector pump? I’m starting to pizzed off at this thing. Any help would be appreciated.
Thread Starter
|
Mountain Pass
Joined: Feb 2002
Posts: 243
Likes: 1
From: Houston USA
Mine is all stock, so I would think a stock pump setup should work. Maybe my mechanical pump is crappy. It is new but it doesn't mean it working correctly. Are you saying an electric pump less prone to siphoning air problems than a mechanical pump or do you mean an electric pump could make an otherwise weak injector pump work correctly? Thanks
Mountain Pass
Joined: Jun 2010
Posts: 105
Likes: 0
Yes! 
If you're pushing fuel up the line there's no way you're sucking air unless there's a problem close to or inside the tanks.
In tank pumps would be ideal but I'm not dropping that kind of cabbage to fix a problem I don't have
If you're pushing fuel up the line there's no way you're sucking air unless there's a problem close to or inside the tanks.
In tank pumps would be ideal but I'm not dropping that kind of cabbage to fix a problem I don't have
Thread
Thread Starter
Forum
Replies
Last Post
mark460
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
3
Feb 13, 2015 12:55 PM
McQ
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
9
Jun 22, 2012 07:20 PM
f250d4x4
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
7
Sep 13, 2011 11:06 PM
