TravisUT
Junior Member
- Joined
- Dec 10, 2020
- Posts
- 18
- Reaction score
- 5
- Location
- Utah
- First Name
- Travis
- Truck Year
- 1984
- Truck Model
- C20
- Engine Size
- 454
Apologies if this is a duplicate post; I'm having some issues with my carb and was wondering if anyone could help?
I have a Quadrajet 4 barrel, mounted to a stock intake on an 84 C20 454. I recently replaced the hot-air choke with an electric choke, and since then, almost every time I start the truck, I get wet black spatter shooting from the exhaust pipe, along with some fuel-smelling smoke. Once the engine warms (choke opens very quickly), the smoke clears and the truck runs great. With the hot-air choke, this problem didn't happen. Also, I recently replaced the spark plugs (they were all fouled, very carbon coated). I don't know if the fouling was just since the electric choke was put on, or if it's been running rich for the last 3 years (since engine and carb rebuild). I've tried adjusting the air/fuel mixture screws, based on RPM, but that didn't seem to help much.
Should I go back to the hot-air choke, or what can be done? I'm not a mechanic, but am comfortable with working on the equipment.
I have a Quadrajet 4 barrel, mounted to a stock intake on an 84 C20 454. I recently replaced the hot-air choke with an electric choke, and since then, almost every time I start the truck, I get wet black spatter shooting from the exhaust pipe, along with some fuel-smelling smoke. Once the engine warms (choke opens very quickly), the smoke clears and the truck runs great. With the hot-air choke, this problem didn't happen. Also, I recently replaced the spark plugs (they were all fouled, very carbon coated). I don't know if the fouling was just since the electric choke was put on, or if it's been running rich for the last 3 years (since engine and carb rebuild). I've tried adjusting the air/fuel mixture screws, based on RPM, but that didn't seem to help much.
Should I go back to the hot-air choke, or what can be done? I'm not a mechanic, but am comfortable with working on the equipment.
