r1ch101

Plugs and wires were changed along with the fuel filter. The hesitation is not always there. Generally there is not a misfire just a hesitation. Definitely feels like a fuel delivery problem. The problem is not as bad after swapping injectors. I also ran a bottle of injector cleaner through with the last tank. There are no oil leaks on the car at all. A small power steering leak I just noticed while working on this problem but that is on the other side of the engine.

I am having trouble with my 2001 Subaru Forester. There seems to be a problem with fuel delivery. From a stop it stumbles. Usually no misfire. I had an engine code for low cat eff and misfire on cyl 3. did some checking with a snapon scantool and found the front o2 sensor was reading just out of parameters so I replaced it. Problem still continued. Did the test for Mass airflow and MAP sensors check injector on cylinder 3 and found no problems. when looking at cyl 3 found the plug to be white. Switched the cyl 3 and 1 injector and add injector cleaner. Replaced fuel filter and still have the same problem. Any help on this would be helpful.