Posted by Christopher S. on September 24, 2019 at 05:05:17 from (24.154.25.70):
Good Morning Gentlemen, attached is a picture of the first New pickup truck my Grandfather ever bought. It was restored around the year 2000 and then was put into storage for a while. It was state inspected in 2015 but only had about and additional 50 miles put on it since then. We would like to get it back on the road again but ran into a carb issue I would like to get your opinion on.
The truck is a 1970 C10 with a 350 ci motor and a 4 barrel rochester quadrajet. When we dug into it last week, the float was stuck on the carb. We disassembled, cleaned and put it back together and it will now run pretty well. The issue I'm having now is when you stab the throttle it will kill the motor. If you feather your foot into it, its fine. At highway speed you can put your foot to the floor and it is also fine. The problem seems to be only at low speed when trying to pull out. I'm leaning towards a bad / worn accelerator pump but would like conformation of this. We have ran an entire tank of fuel through the truck and fresh fuel didn't seem to change the situation.
Also, on the back of the carb, there appears to be a small nipple that would allow a vacuum line to be attached, was this connected to the factory air cleaner and should now be capped off?
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