I was trying to get a little better mileage out of my 40.....Truck is running awsome but I thought it should have a little better MPG....I removed the number 1 plug to see what is going on and it had some white deposits on it as if it was running lean... I decided to adjust the carb.
As I began to richen up the mixture, I noticed that the RPM would drop..I began to turn the screw in and the rpm's would increase....ALOT!
KNowing the proper way to ensure the mixture is correct, I should turn the screw in to increase the rpm and then idle it down with the idle adjustment screw for optimum performance, I did.....problem is the idle adjustment screw wont bring the idle down anymore...it is all the way in and the engine is turning 1200 rpm and I can bring it higher if I continue to turn the mixture screw in...... What gives?
Carb was rebuilt by Jim Chenoweth last year.....
As I began to richen up the mixture, I noticed that the RPM would drop..I began to turn the screw in and the rpm's would increase....ALOT!
KNowing the proper way to ensure the mixture is correct, I should turn the screw in to increase the rpm and then idle it down with the idle adjustment screw for optimum performance, I did.....problem is the idle adjustment screw wont bring the idle down anymore...it is all the way in and the engine is turning 1200 rpm and I can bring it higher if I continue to turn the mixture screw in...... What gives?
Carb was rebuilt by Jim Chenoweth last year.....