Besides the fuel shutoff issue I also am now having a revving issue
Just before the fuel solenoid completley went the motor started/was having intermittant revving issues.
just off idle at say 1100 or so rpm it would stutter and stumble and blow blue and white smoke til you forced it enough fuel to climb past the stumble.
Once cleared the motor would run fine and rev properly with nothing but black smoke or clear when not pushed
the motor wouldnt stumble again until it sat and cooled off, and even then not always.
I was thinking it was maybe plunger debris in the delivery valves was the cause, but they have been cleaned out now, and now the motor is doin the stumble thing more than it is not.
It acts almost like timing goes way out of wack then comes back somehow because the motor now sometimes hiccups or pops (almost like a backfire) tryin to get past the stumble,
Is it possible the timing piston is sticking?
or is there some other issue I am missing like a plugged or cracked injector?
I also loosened off the injector lines at idle, one at a time, and each seemed to make a noticable change in rpm and there was definitely a good flow of fuel spray from the fittings so I dont think it is an injector
I have good fuel supply and a constant 22 psi pressure, and once cleared past the stumble it will easily rev to over 4000 rpm with no hesitation or other noticable issues
thoughts???