The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Rochester 2G 2bbl carb accelerator pump build

mr.precision · 09-08-2019, 02:56 PM

Interesting post.
I rebuilt the Rochester 2V, original to my '67 SWB with a 283, early this year. It still has a pause/stumble if the gas pedal is floored. Driving or sitting..... it stumbles like the accel pump isn't working properly. I can see a stream of gas when looking down the carb throat, when the carb is opened up quickly.
Is this a symptom you had?
I have checked the timing, which is set 10* advanced with the vac line plugged off. It acts like the timing is still retarded too much, but I can't help but think it's the carb. Thanks.

09-08-2019, 02:56 PM	#5
mr.precision Registered User Join Date: Feb 2018 Location: Fountain Hills, AZ Posts: 161	Re: Rochester 2G 2bbl carb accelerator pump build Interesting post. I rebuilt the Rochester 2V, original to my '67 SWB with a 283, early this year. It still has a pause/stumble if the gas pedal is floored. Driving or sitting..... it stumbles like the accel pump isn't working properly. I can see a stream of gas when looking down the carb throat, when the carb is opened up quickly. Is this a symptom you had? I have checked the timing, which is set 10* advanced with the vac line plugged off. It acts like the timing is still retarded too much, but I can't help but think it's the carb. Thanks.