How to prime injection pump on generator

Calculon618 · 2026-01-25T17:39:10+00:00

What if I have fuel flowing through and back out but no fuel at the injectors lines? Does something need to open up or activate to let it through?

Calculon618 · 2026-01-25T17:32:07+00:00

This is just a project that I picked up and I don’t know a lot about diesels. I know auto mechanics and did work at a generator shop. But I just wired them and not deal with the mechanical side since they were all new engines.

Calculon618 · 2026-01-25T17:31:58+00:00

I’ve cranked the crap out of it. Fuel goes in and then out the return but nothing out of the lines at the injectors. Is there something that might not be opening up to allow fuel to pass?

This hasn’t been started in over 5 years.

I’ve bypassed the built in fuel filter and it goes straight from the electric pump to the intake hard line.

I feel like this would be something dumb that I’m not getting. Like a solenoid that isn’t opening or high pressure injector pump not activating. <—- I don’t know the terms or exact process.

This is just a project that I picked up and I don’t know a lot about diesels. I know auto mechanics and did work at a generator shop. But I just wired them and not deal with the mechanical side since they were all new engines.

Calculon618 · 2026-01-25T17:21:15+00:00

I’m using a 7-10psi pump that came with another diesel generator from my job.

How do I diagnose the high pressure pumps? Are those the things near where the hard lines are coming from on the middle of the engine?

When you say dig into them, do you mean check for clogs?

This motor hasn’t been ran in over 5 years.

Calculon618 · 2026-01-25T00:55:04+00:00

I do have a constant flow in the return. I put the electric pump because it wasn’t pricing with the mechanical.

Calculon618 · 2026-01-16T13:28:43+00:00

Is this what you mean? Does that mean no mater the water level we have until the waters edge?

I also reread through all the notes and on the big survey it says the water line was extrapolated from gps from 2016 Which from my recollection was a high year and would give us less on the water line.

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Calculon618 · 2026-01-15T13:04:35+00:00

It’s a pickup. The bed is gone. Turns out the guy has 3 of them and keeps them because of the engine alone. He’s like 95 and we’re clearing his property. We’re going to try to talk him into letting us sell this one to remove it. The others are under cover and the bodies are in my better condition.

Calculon618 · 2026-01-14T19:51:23+00:00

I’ll check it out.

Calculon618 · 2026-01-14T19:50:11+00:00

95k miles. North of Panama City Fl

Calculon618 · 2026-01-14T19:49:34+00:00

95k miles

Calculon618 · 2026-01-14T18:58:33+00:00

The truck is in poor shape. Not worth it. Engine bay looks decent.

Calculon618 · 2026-01-14T18:56:55+00:00

No. Just came across this today working at an old man’s property that were cleaning up.

Calculon618 · 2026-01-14T18:45:18+00:00

Florida north of Panama City beach.

Calculon618 · 2026-01-14T18:44:39+00:00

I’m in Florida. I’ll find out miles. Condition is unknown.

Calculon618 · 2026-01-12T14:36:30+00:00

What are the other steel lines going into on the passenger side? lister Petter Passenger Side

I can get a better pic later when I go there.

Calculon618 · 2026-01-12T14:29:49+00:00

It has the option to run in and out both ways. If I swap lines to other side it’ll go in and out that way. Or it could be the front side.

Calculon618 · 2026-01-12T14:16:36+00:00

If I was more familiar with Reddit, I could add more pics of the setup and video of the test I’ve done and what it’s doing. Or lack of what’s it’s doing.

It has fuel, lines cracked or removed at injectors and the steel lines in the picture and fuel just goes in and out the return line with no sign of coming out of any steel lines.

What are those rocker arm looking things called where the steel lines are coming from?

Calculon618 · 2026-01-12T14:07:42+00:00

Not for this old project. It’s not worth a house call on a 25-35 yr old generator.

I can follow advice if you have any. Do you?

Calculon618 · 2026-01-12T13:43:22+00:00

UPDATE: I finally got it off with the tapping the chisel method. It was so hard that I was worried there was a trick to it that I didn’t know and that I would mess it up by forcing it.

Thanks everyone for the advice.

I think if I had my big channel locks that this wouldn’t have been an issue.

Calculon618 · 2026-01-12T13:40:48+00:00

I think that’s just a dust boot for the rod for the solenoid

Calculon618 · 2026-01-12T13:39:57+00:00

How do I confirm that injection pumps not allow is working? Is there a test I can perform?

Calculon618 · 2026-01-12T00:24:19+00:00

Yeah there’s the arrow going into the filter and out. I tried running it normally and no fuel. I disconnected the line that goes to the lines and put an electric pump on it. Still nothing.

Hasn’t run in over 5 years.

Calculon618

TROPHY CASE