Hi I have been running my original 8/1 S.O.M on used veggi oil . It has run fine for the past 2,500 hrs until 2 days ago when I forgot to switch over to the wvo on start up,my diesel start up shut down tank is only 1 gallon so in about 2 hrs it ran out of fuel.
The next day I tried bleeding the air out which I have never had a problem with before but with no success.
The pump and injector are not original but mico bosch when I rebuilt the engine the originals where to far gone to save, I have since acquired another 8/1 S.O.M as well as a VA.Thinking it was the pump I first changed this with no success then tried the injector from the 8/1 but found that it only pumped the fuel out of the fuel return and would not pop off.I then used the ingector from the VA ran first compression stroke.
Now to get to what I want to ask the mico bosh pump does not spray a mist but more of a stream and if in the engine and try to crank under compression the pressure looks as if it tries to back into the pump
could this be and if so can I repair it. And also is there any hope for the original injector that will not spray but only bypasses the fuel.
Thanks for any help
Potter