I have a Zenith carb on a 57 270. Number on carb is 11475B. It has an adjustable main jet. I have attempted to turn this but couldn't. I didn't try to force it.
I am having fuel in the oil issues, and have changed the fuel pump twice with no change. The truck runs well, but I suspect the carburetor may be the issue.
Looking down the throat while running, I see no excessive fuel, actually don't see any.
Can someone shed some light on this adjustable main set up, with proper adjustment techniques for this carb. I have not done anything to it, and haven't located a rebuild kit if that is what it needs.
I hesitate to attempt a rebuild on my own with all the small parts, springs, balls etc. and no experience in this.
Any help is appreciated.
Thanks, Jeff
