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Yes cracked the bolt at the injection pump first then tightened that and cracked the injectors individually. All 3 had bubbles which didn’t seem to go away completely. Cranked for a good 30-40 seconds. I was thinking injection pump too, is there a way to just replace the seals or what do you think?

Hey guys, just picked up a used GF1800, 1000 hours exactly. Has a crank no start. Cranks healthy, fuel pump is good and moves fuel, cracked injectors and they do bubble. No smoke produced when cranking; but when using starter fluid it does fire and produce black smoke. What else can i check...