I just installed a new set of injectors:
..and the truck is smoking like mad - bluish smoke (bear in mind I run 80% biodiesel). It started right up but when I rev it it seems to falter a bit. Do I have to adjust the timing with the new injectors installed? Or could there be something wrong with them?
On a side note I snapped off one of the hollow return line bolts, so temporarily I bypassed that cylinder's return just to see how it ran. I don't suppose this could be causing any problem aside from a mess under the hood....(though no fuel seems to be coming out of that injector's return at the moment with the snapped-off bolt shaft protruding from it).