I have a 93 Tracker 4wd, 5spd, 8v, 140K with a starting issue. The Tracker will flood itself out and hydrolock with fuel. If I pull the plugs, crank it to clear the cylinders, it wills start but run rough with a lot of exhaust. When restarting after, it won’t start as the cylinders get flooded. New parts include plugs, wires, fuel filter and pump, ICM, injector, pressure regulator and other. ECM is fine and timing is correct. The previous owner rewired the fuel pump relay as the old one developed electric issues (I’m guessing. He had it on a toggle switch you flipped on and off to drive it. I have driven it for 6 months with no issues, problem just showed up on a trip to the store. Basically, the fuel pump is just constantly dumping fuel into the engine.
My mechanic buddy is thinking the fuel pump is not receiving the proper signaling anymore and the previous owner’s relay need to be redone. Can anyone point me in a direction as to how to accomplish this (detailed instruction would be great)?
My buddy and I are at a dead end aside from rewiring the relay. And not sure how to do that in the first place. Any help or ideas would be greatly appreciated.