Forum Discussion
Tvov
Jul 19, 2015Explorer II
j-d gave good advice. I have a 1987 F350 (in my sig picture) that has the 460 with the 4 barrel carb. The engine was running rough and no one could figure out what was wrong. I finally found somewhere on the internet people talking about the "power valve". It can rupture, but also some say the rubber parts can simply harden over time. Fortunately I had a friend who knew exactly how to rebuild the carb - he did that, and the truck ran (still does) almost like new.
I recommend greatly to get the carb rebuilt by someone who knows about Holley carbs and the power valve before you do anything else to the engine.
My F350 cannot pass a gas station, but when pulling / hauling it seems to basically ignore whatever load it has, no matter how much weight. Big, strong engine.
P.S. It is kinda weird today how so many repair garages have mechanics who seriously have never seen a carb. Even my local Ford dealer has to call in a mechanic if a carb vehicle shows up.
I recommend greatly to get the carb rebuilt by someone who knows about Holley carbs and the power valve before you do anything else to the engine.
My F350 cannot pass a gas station, but when pulling / hauling it seems to basically ignore whatever load it has, no matter how much weight. Big, strong engine.
P.S. It is kinda weird today how so many repair garages have mechanics who seriously have never seen a carb. Even my local Ford dealer has to call in a mechanic if a carb vehicle shows up.
About Motorhome Group
38,756 PostsLatest Activity: Oct 29, 2025