I NEED HELP
#11
#12
The check can get plugged up with enough trash to where the solenoid won't open it, possibly burning the solenoid out. If that happens, your injection pump don't have long to live. What you can do is remove the check and break the end of it off releasing the ball and spring. Just don't leave it set too long, otherwise fuel will get siphoned out causing hard starts and premature failure of the injection pump.
#13