Deuce won't idle.

[JohnnyReb]

Hey Guys: We discussed this problem once before, but still:
Deuce will not idle under 1200 rpms. I have to set the throttle at least that high to keep it running. Per your suggestions: New fuel filters(others where almost new, but changed out just in case) and ran some injector cleaner thru it...
Still have problem. Any ideas??
Thanks, JR...

 

[1ton]

Before you go any further have you thoroughly inspected the fuel lines? Diesel engines hate air in their fuel so make sure there aren't any slow leaks where fuel and air are exchanging. I just changed a fuel line on a JD tractor between the final filter and the injector pump had a little leak and wouldn't idle right just like or talking about.

 

[Recovry4x4]

That brings up another point. The fuel line leading from the primary on the right frame crosses under the engine crossmember. I've seen many many of those crushed. Better have a looksee!

 

[DrFoster]

Mixture / turning up the fuel too much? Dunno... that kinda sounds like air tho.

How's the throttle response?

 

[mangus580]

Kenny, mine was!! swapped it out.... and not a bit of difference

 

[cranetruck]

If all else fails, check the timing.
The images below should help in confirming the timing of your IP/engine. Hope the resolution is good enough.

BTW, there is, of course, no "throttle" on a diesel, at idle there is a lot more air available then needed.

 

[DrFoster]

BTW, there is, of course, no "throttle" on a diesel, at idle there is a lot more air available then needed.

I know that... I just meant to ask if the engine is laggy all around. more so than it usually is. By "air" I was agreeing with the holes in lines thought.

How's this: STEP ON IT POP AND SEE IF THE ENGINE RUNS LIKE IT USED TO! YEEEEE HAW!!!!

 

[cranetruck]

Figured you did know, but terminology can sometimes be confusing.

 

[DrFoster]

ok I was wondering for a second, lol

 

[JohnnyReb]

Thanks so much guys! I will check the fuel lines, connections, etc. for leaks..
She runs up great and seems to have plenty of power.
I will let you know what I discover....