Thanks guys... At first when I posted it I didn't realize there was a second location just for diesels... over there we have narrowed it down to being a faulty diaphragm in the injection pump... Sigh.. A small easy repair by all accounts, but the part isn't available... The next solution will be a new injector pump, but that isn't available either so it will be a rebuilt one.. I did find one diaphragm at a site, but it was 87 dollars! I feel it's kind of high seeing as how here on peach the one for the vacuum pump is 15! But I suppose since they have the "last one on earth" they may as well charge for it ... Sigh