Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
In parts list above # 14 is fuel pressure regulator. When engine quits, do you here the fuel pump running? If you remove line at the fuel regulator , is it bypassing fuel back to the tank?
If regulator is defective, the fuel my just be going back to the tank. Have you checked the fule pressure after the fuel pump?
I see question is still open, did you find problem?