had my boat checked out by a mobile marine company at the cost of $150 and he said that my oil injector pump is not working, well its working but not pumping enough oil, ( I thought it does work or doesn't, no in between). he says it should really smoke on a 2 stroke if that's correct. so now I have to buy an injector for 1990 Merc. 100hp Before you say it, disengaging it and premixing is not an option I want to go in. so does anyone know of a company that I can trust, if I buy new I'm looking about $250 which is okay, and used is about $80. just don't if used is a way to go even if the ads say great working condition. any help would surely appreciate