IP issues.

[Remps]

Decided to do all the easy free stuff to the 93 today. Took the pump linkage off and ground the high idle stop off, and where it hit the fuel inlet line. I also ground the fuel pin and nylon washer. Took it for a spin and it pulled hard to 50 mph in 3rd gear, ran awesome. It made a bit of smoke at WOT spooled up, Went home to find that the shutdown solenoid was pooched. So I shut it off with the fuel kill. Fired it up again and decided to turn the fuel screw in some more anyways, with the truck running.Turned it in a good 1.5 turns before it bottomed out. No increase in idle speed. Took it for another spin, and it feels like I turned the screw almost back to stock. Won't make a hint of smoke once it spools, it'll still hit 50 mph in 3rd, but doesn't pull near as hard. I pulled the fuel screw, it looked fine, so I bottomed it again, with the truck off this time. No difference. I made sure the horizontal fuel pin was working freely, and it left a track on the vertical pin. Soo did I bugger something up playing with the fuel screw, or is the shutdown solenoid screwing up fuel flow, or could there be debris from the shutdown solenoid blocking something? Ideas?

[Remps]

I pulled the fuel screw and the pump top this morning to get easy access to the shutdown solenoid. The rubber was chipped, so I gutted it and put it back in. Couldn't find any debris in the solenoid hole. I also put a 366 spring in. It has better throttle response with the spring, and pulls a little harder on the top end, but still not like it was. Gonna try lengthening the fuel screw. Does anyone know if it is OK to adjust the fuel screw with the truck running? Or will it screw somethin up in the pump?

[dpuckett]

Why not just put it back to where it was when it pulled real hard and see how it does for a while?

As for WHY it was weaker with more turns on the fuel screw, I cant help you.

DP

[Remps]

I lengthened the fuel screw about 1/4 inch (a bit much lol) and that solved the power issue. I think adjusting the fuel screw with it running buggered somethin up, so I won't do that again. After lengthening the screw, the fuel kill don't work anymore. Gotta dump the clutch in 4th to kill it.

[ellis93]

There is a kill lever on the side of the pump

[Remps]

That is what I meant by fuel kill, the kill lever on the side of the pump. It doesn't work anymore.

[ellis93]

Holy siht how did that happen. That sucks a big un

[Remps]

Yah been using the search option on here to try and find out how it works, and what would cause it to not work. Was gonna install a shutoff cable tmo.

[Mark Nixon]

I have a VE apart here on the table, at least the top off it, anyway.
The manual shutdown lever just pushes against the fuel lever, it's more like a direct override to the governor.

Interesting thing, the "guinea pig" I have here was exhibiting some strange symptoms, no start when hot, would surge at idle when warm.
I'd tap (or beat) on the pump and it would start.

When I pulled it apart it had like a "give point".
By that I mean if I moved the fuel lever like I was adding fuel, I could feel a "catch" in it.
I got to playing with it some more, now it's jammed somehow, the fuel lever moves the full fuel lever back if I push it forwards and if I push the full fuel lever forwards, it pushes the fueling lever back.
Kinda' like a see-saw.
They are SUPPOSED to move independently.

This may, or may not help you, but I figured I'd share it.

Mark.

[Remps]

I had a runaway (well it tried to) after installing the longer screw. After backing the screw out a couple turns, it had a lope. Stomped the throttle a few times and it went away. Btw, killing a cummins with a 2x6 is kinda hard on the intake boot. Tried to suck the boot into the intake. I had a buddy ready with the board before I started it. I don't recommend gettin crazy with the fuel screw without one!

[Mark Nixon]

If I'm thinking of going nuts on the fuel, I back the idle screw clear off, then try to make it idle by adjusting the fuel screw.
No chance of runaway that way, but it takes a remote starter and a hand on the throttle while adjusting the fuel screw.

If the fuel screw bottoms before you get the idle where it should be, you're SOL and need to run the idle screw back out to compensate.
Last one did that to me and no matter how I tried, I couldn't re-index the throttle arm..
I'm thinking the full fueling lever got bent during a previous spring change.

Mark.

[Remps]

The idle screw was backed down, and the throttle rod lengthened to compensate. I t was at about 2200 rpm and climbing within 2 seconds of it firing, didn't touch the throttle. Backed it out about 2 turns, it was still hanging bad and wanting to take off. backed it out another 3/4 and now it hangs a little above 2500, idling about 800. Gonna back it out a little more, and try adjusting the fuel stop lever to get it to shut off.

[Remps]

Found time today to back out the fuel kill stop screw flush, and that solved the shutdown issue.