Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem
Heavier throttle (mostly) issues
MP81:
It does - but yes, I was wondering if it was something like that.
Ultimately, necessary action aside, what is likely the root cause of the issue? It seems odd that it'd be too rich or too lean for a few seconds, and then suddenly be okay - but maybe it is! I'm an engineer, so I just like to know things, for my own personal knowledge.
tayto:
your accellerator pump seal is probably worn and failing from age and is probably not ethanol resistant.
MP81:
And then putting in too much fuel initially, causing it to bog, then when it stops adding fuel it goes back to being a better AFR which is where it actually accelerates?
Cliff Ruggles:
The "bubbling" at that location indicates a plugged hole in the partition past the accl pump discharge hole in the airhorn. You need to remove the carb, remove the top and clean it out.
While it's apart get one of our kits and replace all the internals to get it up to par for this new fuel. It looks like it's been a while since it's had any TLC anyhow.....Cliff
MP81:
--- Quote from: Cliff Ruggles on August 29, 2019, 11:29:56 AM ---It looks like it's been a while since it's had any TLC anyhow.....Cliff
--- End quote ---
If my assumptions are correct - 38 years! I have to confirm with my uncle, but I'm pretty sure this thing has never been off the car, haha.
Thanks for the feedback guys, looks like I will be placing an order here for the rebuild kit shortly!
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version