10-4... I should have known that. What the deal is- Im looking at buying this one. And the ad said mechanical issues. So i called and the described the issue to me. He said that he put new filters in it not to long ago and thats all he done. wants to get rid of it b4 he sinks alot of money into it. The way you check the fuel pressure is on the side of the fuel filter bowl theres a pressure fitting just like a tire. just check it there??? what should it be reading???