My boss has an '87 F250 with a 460 CI V8 and Holley 4 bbl carb. The engine is completely stock. A couple of yeras ago he purchased a new carb from the Ford dealer and had someone install it. The truck runs fine. Problem is when he hooks up his horse trailer the engine begins to sputter when going up hill. It only does it when pulling a trailer.
Here is my theory. With the additional load the truck is burning more fuel which empties the float bowls faster. That, combined with an angle starves the engine of fuel. I think he needs to raise his float to cure the problem.
What do y'all think and have you seen this problem before?
Thanks in a advance...
Casey Teague