M
Marty M.
Guest
"1995 Four Winns 258 Vista w/
"1995 Four Winns 258 Vista w/ 7.4l OMC Cobra...At WOT engine runs fine for about two minutes, then starts breaking down like it is running out of fuel. I pull throttle back, let idle for a few minutes, and then runs fine for another couple of minutes at WOT. Tach also pegs out. Took to 2 different professionals, first one said bad computer and high pressure fuel pump and idle control, replaced all of them (very expensive). Second one could not find problem. Have changed low pressure pump as well, filter,checked float and needle and seat of vent in fuel reservior, attached to aux. tank, changed cap, wires, rotor, plugs, coil, and ignition module in distributor. Disconnected tach while under load. It runs fine on trailer, Tach reads correctly, but under load, it backfires through the intake,tach pegs out, and starts breaking down. At half throttle it is fine. Can anybody help???"
"1995 Four Winns 258 Vista w/ 7.4l OMC Cobra...At WOT engine runs fine for about two minutes, then starts breaking down like it is running out of fuel. I pull throttle back, let idle for a few minutes, and then runs fine for another couple of minutes at WOT. Tach also pegs out. Took to 2 different professionals, first one said bad computer and high pressure fuel pump and idle control, replaced all of them (very expensive). Second one could not find problem. Have changed low pressure pump as well, filter,checked float and needle and seat of vent in fuel reservior, attached to aux. tank, changed cap, wires, rotor, plugs, coil, and ignition module in distributor. Disconnected tach while under load. It runs fine on trailer, Tach reads correctly, but under load, it backfires through the intake,tach pegs out, and starts breaking down. At half throttle it is fine. Can anybody help???"