Mechanics

MISFIRE CYLINDER #1

2001 Ford Ranger

Engine Performance problem
2001 Ford Ranger 6 cyl Two Wheel Drive Automatic 96000 miles

I got a misfire on cyl #1 (code PO301). I'm getting a blue spark on the spark plug. So that tells me the plug, plug wire and coil pack are good. I changed the plug about 3 mths ago when I first got the code, and it looks like it's never been used. It's not brown or black or anything. It's completely dry also. So, now I'm thinking fuel problem, right? I got 12.8 ohms on the injector itself, which is the same as the #2 injector. Ok, so that tells me the electrical side of the injector is good. I decided to clear the code. It did run a little better but I can tell the engine is still mising. The code has not popped again yet, but the check gauge light did blink a few times with a full tank of gas. All other gauges were normal. What's my next step? Can someone send me in the right direction?
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Airframer1973
June 22, 2009.




Try swapping the injector with another. If the problem moves with it you should replace the injector set. Because they run under the same conditions. Same fuel. One goes out so will otheres

Blackop555
Jun 24, 2009.


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