Quote:
Originally Posted by scott19_68
I'm guessing that he changed the delivery valve O-rings as a leak on most of the O-rings on the fuel delivery side make air leak in - not fuel leaking out. It is possible it could have been the shut-off valve O-ring, but that would/should have taken less than 30 minutes to replace.
I think most of us '606'ers on this board have done the delivery valve seals when the ULSD switchover happened. It does require a very clean working environment since one little speck of dirt can lodge in an injector and ruin your nice spray pattern.
I am kind of worried that you mention that he is "not a diesel specialist" but set the timing on your IP. Your IP has an electronic timing adjustment to control the initial advancement - just a quick computer configuration setting and that's it. I'd ask to see his 'timing adjustment' method.
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Thanks for the info - Let me see if I can be more clear. I had the entire shut off valve replaced, and all clear plastic fuel lines just a few months ago. That solved that leak ( which was not drips, but puddles) and my air bubble problem. This leak was a single o-ring about the size of a silver dollar and required the intake manifold to be removed. Not sure what else he had done. When he put it back together there was lots of smoke, so he then tried to adjust the the timing. His theory is that the pump is making too much pressure and that is creating the smoke. Sounds fishy to me. That is why I posted this. Sounds like I am going to the dealer this week
