deuce wont run unless foot on the throttle

[jwells1993]

hey guys took my deuce out sunday to get some shelves that wouldnt fit in my daily so i got er out let er run for a little while due to it being middle of winter, the trip was only about 10 minutes one way and then back truck ran fine on the way over (although i think theirs moisture in the air lines which made my brakes a little sticky) i shut it off and loaded up got back in started up fine and took off again made it back home and i pulled up to the barn and it died and now it wont run without my foot on the throttle, now ive read up a little bit on the fuel shutoff rod sticking, but my question is would it happen at the end of a run seems to me the issue would have shown itself as soon as i turned the fuel back on not 10 minutes later after driving back home, also do you guys have any recommendations as to what i can do as far as keeping moisture from freezing in my airlines? thanks for the input guys

 

[porkysplace]

Do you drain your air tanks daily , like your suppose to do ?
When was the last fuel filter change ?

 

[jwells1993]

Do you drain your air tanks daily , like your suppose to do ?
When was the last fuel filter change ?

I wouldn’t say daily due to it being at my other property but when I drive it yes quite often and not sure on the filters somewhere s in the last 5k po did them right before I bought truck

 

[porkysplace]

I wouldn’t say daily due to it being at my other property but when I drive it yes quite often and not sure on the filters somewhere s in the last 5k po did them right before I bought truck

Do you drain the primary fuel filter ? that is also on the list of daily PM's in the -10 tm .

 

[jwells1993]

Do you drain the primary fuel filter ? that is also on the list of daily PM's in the -10 tm .

no i have not

 

[Floridianson]

Myself replace all three filters. Double check fuel control assembly unit for free movement. Then check pressures at the bleed screw. 30 psi minimum at idle 60 psi minimum at high idle. Some trucks have alcohol wiffers. Myself up grade and add and air dryer.

 

[jwells1993]

Myself replace all three filters. Double check fuel control assembly unit for free movement. Then check pressures at the bleed screw. 30 psi minimum at idle 60 psi minimum at high idle. Some trucks have alcohol wiffers. Myself up grade and add and air dryer.

Ok thank you for the input I believe the truck has an air dryer but not 100% sure

 

[FloridaAKM]

The M35 series of trucks do not come with an air dryer from the manufacturer. Some one may have added a unit to your truck, but I doubt it unless it is an A3! The moisture just condenses in the two tanks under the truck & you bleed them daily as with the rest of the PM's.

 

[jwells1993]

The M35 series of trucks do not come with an air dryer from the manufacturer. Some one may have added a unit to your truck, but I doubt it unless it is an A3! The moisture just condenses in the two tanks under the truck & you bleed them daily as with the rest of the PM's.

Ok thanks

 

[jwells1993]

Welp guys Ive changed the filters they were clean some gunk in the bottom of the cans but not too bad fuel pumps still pumping fuel fuel shut off is still moving free I can get it to run with my foot on the throttle but it still won’t start and run on its own only thing I’ve done to the truck before my issues was bypassed the fdc and changed the oil probably a month before the issues started If I run the truck off the foot pedal and it gets down to the 5-6 hundred rpm it runs shitty or dies it has gotten better than it was before but still not sure what check next

 

[cattlerepairman]

How about setting the idle to 700-750 (where it should be, so it does not shake everything to bits) and then re-evaluating whether it starts and runs? It may not like the low rpm. For test purposes you can simply use the hand throttle and click it up to the desired rpm.

 

[Floridianson]

Since your FDC is bypassed all fuel control is now adjusted by way of the main fuel control or the twin nuts. Myself when adjusting the twin nuts is use a black magic marker on one of the flats so I know how far or how many turns I have adjusted it. If you idle screw has not helped with controlling the idle problem then you can try and increase the main fuel control / twin nuts up some . Just do not twist the stud or it will break very easy.

 

[jwells1993]

How about setting the idle to 700-750 (where it should be, so it does not shake everything to bits) and then re-evaluating whether it starts and runs? It may not like the low rpm. For test purposes you can simply use the hand throttle and click it up to the desired rpm.

I’ve attempted to turn the idle up and it won’t hold a idle whatsoever I can get it to stay running with the hand throttle at about 12-1300 and it acts like it wants to start on its own like that but I still have to get it with the foot pedal I put almost a turn -turn and a half into the idle screw with no change I’d gladly turn idle up but I can’t adjust idle when I cant get it to idle

 

[jwells1993]

Is their a thing as too much fuel though? Cause I know previous owner turned the fuel up and now that I’ve done the fdc bypass could it be getting too much fuel? It’s just got me stumped cause I did that a month or 2 ago I’ve used truck here and there with no issues then one day I pull back in to my driveway and it cuts out I feel like my issue would have showed itself right after I did the bypass than a month or 2 later

 

[jwells1993]

Since your FDC is bypassed all fuel control is now adjusted by way of the main fuel control or the twin nuts. Myself when adjusting the twin nuts is use a black magic marker on one of the flats so I know how far or how many turns I have adjusted it. If you idle screw has not helped with controlling the idle problem then you can try and increase the main fuel control / twin nuts up some . Just do not twist the stud or it will break very easy.

Is their a thing as too much fuel though? Cause I know previous owner turned the fuel up and now that I’ve done the fdc bypass could it be getting too much fuel? It’s just got me stumped cause I did that a month or 2 ago I’ve used truck here and there with no issues then one day I pull back in to my driveway and it cuts out I feel like my issue would have showed itself right after I did the bypass than a month or 2 later

 

[davidb56]

what PSI is your fuel pressure at idle? without that info, everything is just a guess.

 

[jwells1993]

what PSI is your fuel pressure at idle? without that info, everything is just a guess.

I’ll have to give that a check it’s got a 24v in line pump that seems to push quite a bit of fuel but at the moment I don’t have an idea about psi

 

[dmetalmiki]

HA! , The dreaded button and clip fell off syndrome.
4 dollars to a penny that is what the problem is.

 

[dmetalmiki]

Just to clarify, The button and clip are in the hydraulic head. (At the bottom of),
It is not a big job to rectify.
You might care to have look at my recent post.
"Deuces fixed and a big thank you".

 

[jwells1993]

Just to clarify, The button and clip are in the hydraulic head. (At the bottom of),
It is not a big job to rectify.
You might care to have look at my recent post.
"Deuces fixed and a big thank you".

Not gonna lie everything I’ve searched has came to this issue but I haven’t really found certain symptoms that’s sent me to this issue but it’s definitely been a thing in my mind especially since it happened all of a sudden and not slowly became an issue