• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Accelerator pump issue

Sadie_the_66

Sadie_the_66

Active Member
Local time
5:03 PM
Joined
Oct 22, 2020
Messages
42
Reaction score
7
Location
Indiana
I have a 1966 satellite that has a 318 with oddly enough a stromberg 2 barrel carb. I've rebuilt the original carb 3 times and an old one a friend lent me that I've rebuilt once. The car idles and runs phenomenally but when you mash the gas the car stutters and then picks up. I found that the accelerator pump was sticking and you cold only move it by hand. Am I rebuilding the carb wrong? I put 2 drops of oil on the accelerator pump belt and put it in. And don't say I need a 4 barrel I ain't got the budget
 
?? I did not thing Stromberg carbs had accelerator pumps, just jets and the Damper.

Post a pic of what you have. The only stromberg I worked on was on a Triumph.

RGAZ
 
RGAZ said:
?? I did not thing Stromberg carbs had accelerator pumps, just jets and the Damper.

Post a pic of what you have. The only stromberg I worked on was on a Triumph.

RGAZ
Click to expand...
The Stromberg WWC3 carb were standard on 318 engines. The accelerator pumps were spring driven downward by a compression spring, located above the pump plunger and retracted by the external linkage to the throttle shaft. There are two (2) check balls located at the bottom of the accelerator pump well. The large ball is the inlet valve and the smaller ball is the outlet valve. Failure to install these check valve balls will result in the accelerator pump not working at all. It sounds as if someone did not install the drive spring or one or both of the check valve balls. If you still have the rebuild instructions or a copy of the FSM you eill see yhe locations of these items. The WWC3 carbs are very reliable and easy to maintain. Perhaps something was overlooked during the rebuild. Just my opinion of course.
BOB RENTON
 
RJRENTON said:
The Stromberg WWC3 carb were standard on 318 engines. The accelerator pumps were spring driven downward by a compression spring, located above the pump plunger and retracted by the external linkage to the throttle shaft. There are two (2) check balls located at the bottom of the accelerator pump well. The large ball is the inlet valve and the smaller ball is the outlet valve. Failure to install these check valve balls will result in the accelerator pump not working at all. It sounds as if someone did not install the drive spring or one or both of the check valve balls. If you still have the rebuild instructions or a copy of the FSM you eill see yhe locations of these items. The WWC3 carbs are very reliable and easy to maintain. Perhaps something was overlooked during the rebuild. Just my opinion of course.
BOB RENTON
Click to expand...
Addition to 'Bob', if pump has leather at the bottom; do a quick soak in oil & insert a small screwdriver on inside and "flare" the leather outward a little. If pump is "rubberized ", no oil needed.
 
I belive this one is off of a 66 a100

20210715_155330.jpg
 
I also had to guess on this one... when I rebuilt the carb the rebuild kit didn't tell me witch hole I needed to put the smaller check valve in so i took a guess and put it down the hole with threads because the screw had a hole in the bottom of it. (This was all of course under the housing) I also know for sure I have the spring installed and the bigger check ball in the accelerator pump well.

20210715_155833.jpg
 
This Is the accelerator pump from the first rebuild (don't worry it is only dirty cause it's been in my tool box) it is mildly flared but I don't know if it is correctly flared.

20210715_160720.jpg
 
Sadie_the_66 said:
This Is the accelerator pump from the first rebuild (don't worry it is only dirty cause it's been in my tool box) it is mildly flared but I don't know if it is correctly flared.

View attachment 1139128
Click to expand...
It looks normal to me. The spring inside should hold the flare open. Trouble ensues after sitting dry for a length of time and the leather dries and shrinks.
Mike
 
Check out Mike's Carbs on Youtube.

He's got a few vids on Strombergs, and all the parts you'll need.

 
The first carb he is showing is the Stromberg WW3....its an older unit because of the tapered flange for air filter body. The newer WWC3 carbs used a flat air cleaner flange a spring bale to attach the air cleaner lid with a wing nut. The second carb Mike is referencing is Carter BBD 2 bbl carb. Totally different in appearance and operation. The only thing in common is they are both carbs...the Carter fuel inlet is in ftont; the Stromberg fuel inlet is on the side. The spring under the leather pump plunger is called a gsrter spring, to help keep the plunger in contact with the plunger well as the drive spring pushes the plunger down. The external linkage pulls up the plunger, against the dtive spring, for another down stroke. Take what he says with a grain of salt....its not entirely correct. Just my opinion of course.
BOB RENTON
 
Last edited:
You must log in or register to reply here.

Similar threads

DynamicXX
Is this Clevis available in other lengths?
Replies
8
Views
537
BSB67
BSB67
GassMann
67 440 mechanical fuel pump low fuel output...
Replies
18
Views
837
GassMann
GassMann
J
Big block air cleaner snorkel on 1975 small block 318ci question
Replies
2
Views
312
JWKetron
J
Polyhead
Dual Carter AFB Bog and Stall Issue on WOT Acceleration - 413 Max Wedge
2
Replies
34
Views
2K
Polyhead
Polyhead
J
Circa 1975 318ci 4-Barrel conversion Engine Timing Question
2
Replies
32
Views
1K
YY1
YY1
Auto Transport Service
Back
Top