Engine Performance problem
1990 Ford Bronco V8 Four Wheel Drive Automatic 92XXX miles
Alright guys. For the last month or so, my Bronco has been having performance issues. I'm not geting the power I should have, idling is all over the place whether I'm in gear or in park, and I'm puffing black smoke when the engine runs over 2500rpm.
I have replaced plugs, wires, the distributor cap and motor, the upstream O2 sensor, the egr valve, and I have tried to adjust timing. All these fixes have helped, but the problem persists. I'm thinking the problem is the fuel injector, or maybe the bypass valve back to the fuel tank, but I'm not a mechanic, so I really have no idea. What do you think?
Friday, July 17th, 2020 AT 12:04 PM
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