Accelerator pedal sticks

mattyj858 · November 18, 2017, 07:15 PM

Hi everyone,

I noticed today that when I let my foot off my accelerator peddle the peddle seems to stick in position and not back down, maintains a high rpm. While parked, if I apply gas at the peddle and let go, it slightly backs down but stays at a higher rpm. If I pull the peddle back by hand, there is no resistance ( lowering rpm). Looking at the linkage, I have two springs, one directly to the linkage and another, see pics. Could this issue be weak springs? If so the linkage end seems to be a closed loop, do you have to unassemble the linkage to replace? The other end is just a J hook.
Sorry for the vague explanation, I am bad with linkage and carbs....

Carb is a 650 Edlebrock on a 73 440 Brave 20

Elandan2 · November 19, 2017, 08:26 AM

Have you checked the accelerator cable? The resistance may be caused by a slight kink or crushed spot somewhere. Putting stronger springs may resolve that problem but would make it harder to hold the accelerator down while driving.

mattyj858 · November 19, 2017, 11:36 AM

Thanks, sorry I might not have been clear, but it feels like there is no resistance on the peddle when I manually pull the peddle back by hand, seems unobstructed.
I added reproduction of the metal big foot peddle that has some weight, could the new peddle weight affect the spring? Seems a long shot.

If I were to change one or both springs, the main going from the accelerator cable seems to have a closed end kind of like a key ring, do I need to disassemble the linkage to change out the spring?

LJ-TJ · November 19, 2017, 02:03 PM

Ok so if it were me. Which it was. I purchased this product which has turned out to be one of the best discoveries if not the best Discovery I've made for working on these old girls.
https://www.bgprod.com/contact-us/distributors/ You want the BG In-force Ion-activated Penetrating oil. It WORKS.
I'd spray all my linkages first, work them back and forth for a bit and see what happens. It that didn't work I'd go to N.A.P.A or Auto Zone and pick up a spring kit and just add another spring to see what happens. You may just have a tired spring. Hm?

mattyj858 · November 19, 2017, 02:11 PM

Cool thank you. I'll spray the linkage. For the time being (today) I might spray, would a PB Blaster work or should I use some kind of silicon lubricant? I'll grab th BG this week. Thank you

LJ-TJ · November 19, 2017, 02:48 PM

Let me put it this way. At 69 I've heard all about and used WD40,PB Blaster, heard it all. What I know is I fell across this stuff by accident when I was pulling an engine out of a 1975 Winnebago in Pennsylvania. We were reefing like crazy on all the nuts all day. Finally called it a night and sprayed all the nuts with this stuff. The next morning when I went to crank on the nuts they near fell off. You could take them off with your fingers. Sounds crazy but this stuff is amazing. I now buy the stuff by the case. Anyone I've given it to to try out never goes back to what ever they were using before they tried BG. No I have no affiliation with the product I just love. Oh and I use it on my farm equipment all the time if that tells you anything. Hm?

mattyj858 · November 19, 2017, 03:20 PM

LJ-TJ · November 19, 2017, 03:38 PM

This is what it looks like. I don't mean for you to buy from these guys. This is what the can looks like.

https://www.3sx.com/store/comersus_viewItem.asp?idProduct=612

mattyj858 · November 19, 2017, 03:53 PM

Thank you, I'll look for it!

I'm going to replace the springs as well on the cable, and I might remove the aluminum big foot peddle as it might be too heavy to spring back?