Carb sputter uphill

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

ET_77K25

Junior Member
Joined
Jul 17, 2024
Posts
1
Reaction score
0
Location
Halifax
First Name
Evan
Truck Year
1977
Truck Model
GMC K25
Engine Size
454
Hi folks, I'm new to the forum and I'm hoping someone can help me out with a carb/fuel question.

My '77 K25 w/ 454bbc sputters going up hill. I can see the fuel gauge bouncing around so I'm sure the fuel is sloshing around in the tank, but I should still have lots of fuel. It's almost like the fuel pump is being starved of fuel.

What can I check to find out what the problem is?
 

fast 99

Full Access Member
Joined
Dec 31, 2021
Posts
2,014
Reaction score
2,904
Location
Spokane, Washington
First Name
Brian
Truck Year
81,85
Truck Model
K20
Engine Size
350
Fuel pressure, volume and filters. New fuel pump quality is horrible. If everything checks out [unknown what carb] possible metering rod stuck.

Bouncing fuel gauge is likely caused by the gauge itself. Shouldn't be an issue provided there is enough fuel in the tank.
 

Forum statistics

Threads
44,105
Posts
949,444
Members
36,204
Latest member
MeDammit
Top