My first trip with my new engine ended with more oil in it than when I started - obvious fuel contamination confirmed by a sample analysis. I am going to redo the fuel injection piping but have a few questions. First thing - the two inch or so tall "stand pipes" that screw into the head that the fuel pipes to the actual injectors attach to - is there supposed to be a copper sealing washer between the stand pipe and the head? Mine had thin steel washers and that's what I put back in, but it seems to me that would be a useful place for a copper sealing washer. Second - the fuel pipes are the ones with o-ring fittings, not the taper type, and I re-used a number of the old o-rings. That's what I really suspect is leaking. Does any one know the correct size specification for those o-rings? Or can I order them from Detroit, do you think? Anyway, my plan is to take all the fuel pipes off, and replace all the o-rings so I need a bunch of them, 32 I figure, so I'd like to order the correct size.
Any other advice? Obviously checking each pipe for cracking, but is there a good way to tell where the leak is, visually?
Thanks, Brian