Re: 1989 Ranger Issue
Originally Posted by dungbeetle07
Not certain but I would think a bad injector would put less fuel than necessary in the cylinder. Not sure if they can stick open. The fuel pressure regulator could be bad. If its like mine it's vacuum actuated. If it goes bad I believe it allows the fuel pressure to go up which could cause it to run rich.
i think the fuel pressure regulator is on the fuel rail. pull the vacuum line of of it and see if there is gas in the line. there should not be. what year did obd-I start? do you have a mil? do you have codes?
2004 Ext Cab, 4WD, 4.0, Auto, 146k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 3/10/2016)
2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).