I agree with Lew, particularly because of the erratic 'jumping' about you mentioned. The sending unit or wires to it need to be tightned or replaced. Robert Seastream On Jun 19, 2006, at 5:03 PM, SailorLew at aol.com wrote: > I had something similar happen. The sending unit on the engine just > had to be > tightened. > Lew >