gas pedal bouncing

B

burnette

Senior Member
hi ! i wanted to give my truck a road test before this winter final assembly. i can,t feed the gas even. its like i leave clutch out give gas ,and the truck jolts . which makes me give more gas without me wanting too. so then i let off gas ,and i can,t seem to be able to take of. maybe a stiffer spring!
42 2 ton flathead
 
are used to a light car or truck? these trucks are heavy and do require a different clutch release/accelerating protocol--more like over revving and letting the clutch out slower-sort of slipping the clutch. I drive a 41 1 1/2 ton truck and it is different than driving my 3/4 ton or my wagon
 

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If you drive it a lot, the clutch & flywheel stay relatively clean. If it has set for a long time, it can get crusty spots on the flywheel and cause it to be grabby. Slip the clutch a bit during start off can clean it up pretty quick. A glaze on the flywheel can do the same thing but it will generally chatter some.
 
What BOB said. Do you not have the adjustable foot rest to the right of the spoon pedal? Should have a rubber top on a steel disc about 1 1/2" dia mounted on a threaded stud. I find I usually have to adjust the height. Most all my fords are one ton and above and I know the feeling you describe. Never quite understood the concept or why ford used that 'tilt the foot' system instead of a normal gas pedal.
 
thanks guys ! i do have the foot rest but its not installed yet. drove it back in my house garage today it seemed better. but i had the choke pulled a little and idle was a bit high.
another think i noticed was my steering box is maybe a bit tight . i have to bring it back straight ,it should straighten up alone after a turn !
 
If you have to bring the steering wheel back to straight, it sounds like you need more caster. On the '42, you can get shims that go between the front springs and the axle. I guess they still make them. I had them on my '50 F1.
 
drain out your steering box and refill with a 50/50 mixture of synthetic doping 85w90 and synthetic grease--about the consistency of mustard--works great and does ease steering
 
you will have a hard time teasing me ! i starter driving a stick in 77 i was 10. i got a ford with a detroit and a 18 speed. its not the shifting its got to do with the gas pedal being to tender i think. i will install the foot rest but only this winter. thanks brian.
 
burnette said:
you will have a hard time teasing me ! i starter driving a stick in 77 i was 10. i got a ford with a detroit and a 18 speed. its not the shifting its got to do with the gas pedal being to tender i think. i will install the foot rest but only this winter. thanks brian.
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I apologize, I didn't know you were just a youngster. That explains it!
 
And those of us who frequent FTE know 'burnette' as a truck mechanic who can only work on his own truck for a couple of months in the winter because he is so busy with work the rest of the time. I do agree however that he is just a punk kid. :)
 
Burnette, you have a good sense of humor.


You sure it's gas? Could be an ignition issue (condesor) or some sticky valves.


Does it only buck under load vs idle? can you rev it in idle then once you take off in gear/load it bucks?
 
i didn,t go on the paved road. i managed to shift in third gear , and truck seemed to pull good. carburator is a fresh rebuilt from charlie in ny. i installed points and condesor last winter they came from napa. its just when i take off and i think first gear is worst than second gear. i gonna try and find the foot rest and make another test next weekend.
 
i had put new bushing in the steering box ,but the gears are the sameones. i will slacken it a bit too,to see if its any better.
 
Bob and GB have pointed you in the right direction. Without the footrest you will have a "bumper car" sensation. The same thing happened to me with my Model A.
 
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