Quadrajet choke
Thread Starter
Racer
Joined: Sep 2007
Posts: 370
Likes: 5
From: Bradley Il.
2017 C3 of the Year Finalist
Quadrajet choke
How often is it normal to have to adjust the choke on a Rochester Quad.? It was professionally rebuilt in 2020 and just recently it is not working correctly. TIA.
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
There is nothing that needs re-adjustment, and nothing that can go "out of adjustment," on your divorced choke carb. It will stay in adjustment for the life of the carb. The only thing that can fail on your choke system is that the choke pulloff can rupture and fail, or your choke coil on the manifold can fail. But nothing can go out of adjustment, and failure of either of those components will require component replacement - not an "adjustment."
Lars
Lars
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
Yes, I checked my records when I saw your post, and I have all your data. What is the choke doing or not doing? Have you hooked up a long hose to the pulloff and sucked on it?
Lars
Lars
Last edited by lars; Aug 9, 2022 at 12:02 AM.
Drifting
Joined: Oct 2020
Posts: 1,567
Likes: 576
From: Wisconsin
There is nothing that needs re-adjustment, and nothing that can go "out of adjustment," on your divorced choke carb. It will stay in adjustment for the life of the carb. The only thing that can fail on your choke system is that the choke pulloff can rupture and fail, or your choke coil on the manifold can fail. But nothing can go out of adjustment, and failure of either of those components will require component replacement - not an "adjustment."
Lars
Lars
I think I'll get a new one and drill and pin the axle to the saddle so it can't turn.
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
I just talked to Jim, and it sounds like there was just a little stickiness in the linkage preventing free and smooth movement of the choke and fast idle linkage. With things free and smooth, car is starting fine again. Jim did the "suck-test" on the choke pulloff, and it operated as it should. Nice job! Now wash the taste down with a cold beer.
Lars
Lars
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