My 94 ford e-150 has an occasional miss at low to medium throttle or idle after the engine warms up. The miss just started about a month ago. From reading your columns, I think it may be due to a vacuum manifold leak, bad egr valve or leaking vapor canister/fuel vapor recovery valve. I have a Haynes manual but it does not show where the vapor canister or vapor recovery valve are located. Can you please advise where those components are located and confirm whether they might cause this condition if defective? Any advice as to how to proceed with diagnosis would be much appreciated. By the way, I replaced plugs, wires, rotor and dist cap (tune-up after 18 years of service) but that made no difference. Bob in Tallahassee
have the same problem?
Saturday, December 8th, 2012 AT 5:56 PM