Off idle stumble.
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Joined: May 2016
Posts: 61
Likes: 1
Off idle stumble.
1974 model year
350 sbc
Edelbrock 1407 carb (600)
Edelbrock performer intake
Hei converted
Otherwise stock
When taking off from idle car will stumble and want to die and has on occasion. I am getting some back fireing through carb. Once I'm over 2000 rpm it evens out.
Idle set at 900 rpm
Initial timing set 8*
Here is what I've tried
-adjusted choke *like a million times
- new accelerator pump * used different adjustments.
-Adjusted idle screw
- I set idle very high and got the same issue.
If anyone could point me in the right direction it would be greatly appreciated.
350 sbc
Edelbrock 1407 carb (600)
Edelbrock performer intake
Hei converted
Otherwise stock
When taking off from idle car will stumble and want to die and has on occasion. I am getting some back fireing through carb. Once I'm over 2000 rpm it evens out.
Idle set at 900 rpm
Initial timing set 8*
Here is what I've tried
-adjusted choke *like a million times
- new accelerator pump * used different adjustments.
-Adjusted idle screw
- I set idle very high and got the same issue.
If anyone could point me in the right direction it would be greatly appreciated.
Thread Starter
Advanced
Joined: May 2016
Posts: 61
Likes: 1
Burning Brakes
Joined: Apr 2008
Posts: 1,222
Likes: 93
From: shelbyville West Michigan
does it start and idle fine?
can you visually see fuel squirting in the carb from the accelerator pump?
sounds like a lean issue, when you pull the plugs let us know how they look, light tan, white, fouled, etc.
do you have a vacuum guage and can you do some vacuum tests, idle, blip the throttle, etc. and post #'s?
can you visually see fuel squirting in the carb from the accelerator pump?
sounds like a lean issue, when you pull the plugs let us know how they look, light tan, white, fouled, etc.
do you have a vacuum guage and can you do some vacuum tests, idle, blip the throttle, etc. and post #'s?
