by Kellie W.
(Highland, MI, US)
New hoses. New fuel filter. New belts. New low pressure fuel pump. New high pressure fuel pump. New distributor cap. 3/4 full tank. If we go over 30 mph we lose power, and eventually shuts off and occasionally backfires, but starts right back up without issues. Will run under 30mph fine. Only has 450 hours on it. Original owners. Running out of ideas.... Any suggestions?