Hello. I have a 1993 Ford F-150 4x4, Inline 6-cylinder engine, stick shift with 218,000 miles. The truck does have dual fuel tanks.
Symptoms: Smell gasoline, quits when started first time (unless I kick the accelerator quick a couple of times), rough idle, and "jumps" or surges when you drive her. The idle is so rough you can hear it when it is idling. Last, I smell exhaust (and smell like it at times when I get out of the truck).
My truck is at my mechanic and he has gone over it from front to rear; he set the timing, but when he set the timing correctly, the truck ran worse!
The truck has had a tune-up recently (plugs, wires, cap, rotor button, fuel fileter, PCV Valve, and air cleaner). Mechanic said that when he disconnected a "round switch on the motor block that controls the vacuum", it ran a little bit better, but the check engine light came on.
Any advice is helpful; my mechanic is very honest, but neither of us want to start replacing things without knowing what direction to head in. Thank you for any assistance!
PS: Don't know if this is helpful, but gauge for rear fuel tank began working intermittently when all these problems started (it had not worked for four years). Also, fuel goes from one tank to the other (Ford dealer alledgely fixed with a recall, but I am doubtful).
Tuesday, December 15th, 2020 AT 3:46 PM