Engine wont rev to 2600 rpm

[treeguy]

Really you need to see if the linkage on the IP is bottoming out at WOT from the peddle and verify if your tach is correct. I wouldn't question or tear into any significant mechanical workings until you can verify that your good to that point. Obviously you replaced the fuel filters (did you check the air filter???????? again asking?????) so you need to know if the linkage is set right then go from there. One step at a time.

 

[G-Force]

I was trying to upload the troubleshooting manual the other night but it ewouldn't upload.....
Hey Wes..........................................AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
That felt good

 

[jimk]

Right click the image posted above> save link as> save (remember destination at top of window or specify ex-desktop)

 

[Blackmagic94]

The engine quiets as it reaches 2200-2300 RPM, almost as if it is defueling at that point like from a governor.

 

[nk14zp]

Any updates?

 

[Blackmagic94]

Drove it off road Sunday


3rd gear I can do 2450 RPM, 4th and 5th gear it is 2200-2300 Max. Re bleed fuel liine prior to this trip as well. Gonna inspect it today and see if any lines are kinked and if the pedal stop is an issue. I did notice the truck will now do 41 mph in 4th gear when before it was out of steam at 38mph.

 

[Blackmagic94]

Pedal stop is no where near the end range of the pedal, should I adjust it up to make it work?

 

[Floridianson]

The peddel stop should not have to be messed with. There should be a coupler with spring on the throttel linkage that stop the bending of the ip control arm/rod. You adjust the max rpm by takeing off the throttel linkage then takeing off the arm on the ip. Then you remove the cover around the ip shaft and you will find the max rpm screw. Leave the bolt on the floor alone.

 

[doghead]

All in the TMs.

 

[Blackmagic94]

Only revs to 2300 in neutral

 

[Floridianson]

Only revs to 2300 in neutral

Take off the cover I talked about and adjust the max rpm to 2600.

 

[G-Force]

Take off the cover I talked about and adjust the max rpm to 2600.

It only took 5 pages of posts to get the no load rpm answer
Now do as Floridason said and see how it runs.

 

[cattlerepairman]

It only took 5 pages of posts to get the no load rpm answer
Now do as Floridason said and see how it runs.

Actually....page 1.....I asked "
"Does it revv up to max without load?" and the answer was "no".

 

[Blackmagic94]

Adjusted the high speed gov screw 3 turns and unloaded neutral RPM went from 2300 to 2600.

 

[Blackmagic94]

Have not driven on road yet but most likely that was the cause, I wonder why the Cal ANG would have backed it off that far.

 

[doghead]

Have you driven it on the road yet?

Without a follow up report, we can't learn from this thread.

 

[Blackmagic94]

A long enough flat it will hit 54-55 mph and the revs are where they should be. Fuel screw has not been adjusted.

 

[jsthnt@gmail.com]

Mine is doing the same thing, but it seems to rev up to higher rpms in 1st through 3rd. 4th and 5th I can only get to 2000 rpm over if I have a tail wind.

 

[harleyrkc]

It must be the season for rpm issues. I started driving my other truck more since my first truck wont start right now. But thats another issue that I think I have narrowed down.

The truck I've been driving lately started acting like the governor is stopping it. It always had great power, good acceleration, and had no problem reaching 56 - 60 mph around 2500 rpm. The other day I was running down the freeway around 56 -57 mph and 2600 rpm when it was like I let my foot off the gas and my rpm's dropped to 2000 - 2200 rpm. About 6 hours after parking it everything seemed fine for the first 5 miles and then it did it again all the way home.

I can't get the truck past 50 mph when its doing whatever it doing. I'll have to check the no load rpms later today. But what could be causing it to only do this sometimes? I'm wondering if its an injector problem.

 

[73m819]

it must be the season for rpm issues. I started driving my other truck more since my first truck wont start right now. But thats another issue that i think i have narrowed down.

The truck i've been driving lately started acting like the governor is stopping it. It always had great power, good acceleration, and had no problem reaching 56 - 60 mph around 2500 rpm. The other day i was running down the freeway around 56 -57 mph and 2600 rpm when it was like i let my foot off the gas and my rpm's dropped to 2000 - 2200 rpm. About 6 hours after parking it everything seemed fine for the first 5 miles and then it did it again all the way home.

I can't get the truck past 50 mph when its doing whatever it doing. I'll have to check the no load rpms later today. But what could be causing it to only do this sometimes? I'm wondering if its an injector problem.

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