Please Help 89 Ranger

[Kitt1993]

Hello everyone. A friend of mine has a 89 Ranger. It sat for a few years and then he drove it down from Maryland to Florida. It ran perfectly. Then all of a sudden it started to run rough and now it dumps fuel intermittently out the exhaust. He had a mechanic do a full tune up plugs wires etc, and that didn't fix the problem. Has any one had this problem in the past? With the engine running, I tool a long metal tool and stuck it on the injectors to hear for clicks. The first one doesnt click but the rest do. I am assuming that injector is not turning on. Or maybe bad. I would like to do this right and find out what code the computer is giving, and then go from there. The engine light is on, but I don't know how to scan for the code. Can some one explain how to scan for the codes...?

Thanks

Chris

[Davescort97]

The injector you can't hear is stuck in the open position allowing fuel to flood out the combusion chamber and the exhaust. Replace that injector. It will throw a code when it leaks down.

[rhandwor]

I would suggest to change oil when the bad injector is changed.