| |
Click on image for the lowdown. 
====
| | |
8 members (Donf, Goach2, Otto Skorzeny, cmayna, Joe H, Wally / Montana, Gdads51, 1 invisible),
89
guests, and
0
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,118 Posts1,056,307 Members48,439 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | 
#36465 10/28/2004 9:50 PM | Joined: Jun 2004 Posts: 103 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2004 Posts: 103 | OK - I checked the archives and can not find anything re: leak / seep at the accelerator pump arm / link. After a run, I can feel under the carb bowl and collect an oily (I use Marvel Mystery Oil in the gas) seep on my finger. I don't smell gas fumes in the seep, and the color is "reddish". The carb does not leak at the gasket as many Rochesters do - this occurs at the link. I rebuilt this carb with a NAPA kit and gas mileage is better. I can't figure how the carb is leaking at this area. Floats are set to specs and do not have pinhole leak. I have an oil bath filter, but this is a light oil (MMO?)
deposit. BW | | |
#36466 11/17/2004 5:26 PM | Joined: Jul 2000 Posts: 53 Shop Shark | | Shop Shark Joined: Jul 2000 Posts: 53 | ttt. I have the same problem. Is there a quick fix?
How did all this sawdust get under the hood? | | |
#36467 11/18/2004 5:00 PM | Joined: Jun 2004 Posts: 103 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2004 Posts: 103 | I took the top off the carb and found the float drop to be more than 1 3/4 inches. Re-set it to the specs and replaced. No more leak. I am guessing that the bowl would over fill and allow some gas to slosh out whild driving. Check your float level and drop. BW | | |
#36468 11/18/2004 7:09 PM | Joined: Jun 2000 Posts: 2,773 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 2,773 | I just saw this thread and was going to suggest checking the float level. You found your own solution. Another thing to check when you are having problems with a Rochester is the throttle shaft wear. There was a post here a month or two back by Carbking about how to measure the wear and when to bush the throttle body. All that said, there is only one good way to keep a Rochester one barrel from leaking. Fill it with JB Weld. 
Fred
52 3600
69 C-10
| | |
#36469 11/19/2004 7:45 AM | Joined: May 2004 Posts: 62 Member | | Member Joined: May 2004 Posts: 62 | Rodchester used "Detroit Adobe" in its castings and after many years develops porisity and seeps fuel. Not much can be done except replacing the bowl section with one that don't seep as much.
Also the gaskets can seep. I seal all gaskets with Permatex Avaition sealer. It cured the seeping through the gaskets anyway.
47 Fleetmaster, Hotrod 6, 5 Speed
50 Sedan Delivery, 327, 5 Speed
| | |
|
|
| |
