ConstantVigilance
Full Access Member
Hello and Happy New Year! I am the new owner of my first truck. It’s a 1992, 93, 94 F350 extended cab, with regular cab frame, 7.3idi 4x4 with a sidewinder turbo.
I have searched the forums and have in-deed found many owners who have had this same problem. Unfortunately, I haven’t read a follow up as to what the problem ended up being.
I bought the truck and it ran just fine (just needed a tranny), and after I removed the injector lines (swapped an extended cab and swapped a larger rear tank) to replace the glow plugs (the wrong brand was installed by PO), the truck wouldn’t start.
The problem: The injector pump will not move fuel into the injectors.
What I’ve tried: I made sure the fuel filter was topped off. Made sure the FSS solenoid is getting power. Disconnected the glow plug relay. Have the throttle pegged. I bleed the lines until I see no bubbles. But there were so many bubbles it was like a straw was inserted and someone blowing into it. Tons and tons of forceful air and I ran the batteries down 5 or 6 times… I thought no way fuel line had that much air.
The bubbles came in a pattern, as if following the motors revolutions: I isolate the mechanical pump (remove tank feeder line from mechanical pump and draw from a 5 gallon jug, than insert outgoing line into clear bottle, not even going into the filter) from the rest of the system: Same bubbles – same forcefulness. I THINK I have my culprit, and indeed, after replacing the mechanical pump, no more bubbles or air. Just a hard stream of fuel.
I bleed the injection pump FEED line and then hook it up. I crack one injector line and I run my batteries down 5 or 6 more times (I crank for about 25 seconds and wait 2 minutes while I have it on a 40 amp charger).
I DO GET fuel out of the top of the IP. When I have this line (bleed line?) running into a clear wine bottle, I get a hard stream of fuel that fills the bottle up at least 2 times before the starter starts losing steam.
I tried to force fuel through the IP via a hand pump (read this in a thread), but no luck. I would still get fuel out the top bleed line, but I decided to block off that line and I broke the hand pump (diesel everywhere – including my face – yuck).
I’ve spent 4 days trying every way and everything I can find online or think of. I have a feeling that I may have broken the original pump by trying too much, and may bust the new one. Now that the new pump is on, I have small amounts of bumbles escaping the fuel heater connector located on top of the filter housing. Only happens when I have the IP bleed line hooked plugged into were its suppose to go - otherwise, when i bleed into a bottle, no bubbles. I wasn’t seeing this before. Sorta makes me think I’ve broken something already.
The only thing I haven’t tried is a line bypassing the fuel filter.
Any help would be greatly appreciated. Thank you for reading this post – and if you can point me to a thread that helps, it would be awesome.
Happy new year everyone!
I have searched the forums and have in-deed found many owners who have had this same problem. Unfortunately, I haven’t read a follow up as to what the problem ended up being.
I bought the truck and it ran just fine (just needed a tranny), and after I removed the injector lines (swapped an extended cab and swapped a larger rear tank) to replace the glow plugs (the wrong brand was installed by PO), the truck wouldn’t start.
The problem: The injector pump will not move fuel into the injectors.
What I’ve tried: I made sure the fuel filter was topped off. Made sure the FSS solenoid is getting power. Disconnected the glow plug relay. Have the throttle pegged. I bleed the lines until I see no bubbles. But there were so many bubbles it was like a straw was inserted and someone blowing into it. Tons and tons of forceful air and I ran the batteries down 5 or 6 times… I thought no way fuel line had that much air.
The bubbles came in a pattern, as if following the motors revolutions: I isolate the mechanical pump (remove tank feeder line from mechanical pump and draw from a 5 gallon jug, than insert outgoing line into clear bottle, not even going into the filter) from the rest of the system: Same bubbles – same forcefulness. I THINK I have my culprit, and indeed, after replacing the mechanical pump, no more bubbles or air. Just a hard stream of fuel.
I bleed the injection pump FEED line and then hook it up. I crack one injector line and I run my batteries down 5 or 6 more times (I crank for about 25 seconds and wait 2 minutes while I have it on a 40 amp charger).
I DO GET fuel out of the top of the IP. When I have this line (bleed line?) running into a clear wine bottle, I get a hard stream of fuel that fills the bottle up at least 2 times before the starter starts losing steam.
I tried to force fuel through the IP via a hand pump (read this in a thread), but no luck. I would still get fuel out the top bleed line, but I decided to block off that line and I broke the hand pump (diesel everywhere – including my face – yuck).
I’ve spent 4 days trying every way and everything I can find online or think of. I have a feeling that I may have broken the original pump by trying too much, and may bust the new one. Now that the new pump is on, I have small amounts of bumbles escaping the fuel heater connector located on top of the filter housing. Only happens when I have the IP bleed line hooked plugged into were its suppose to go - otherwise, when i bleed into a bottle, no bubbles. I wasn’t seeing this before. Sorta makes me think I’ve broken something already.
The only thing I haven’t tried is a line bypassing the fuel filter.
Any help would be greatly appreciated. Thank you for reading this post – and if you can point me to a thread that helps, it would be awesome.
Happy new year everyone!
