2007 Ford Ranger started making what sounded like a squeeky belt PR pulley noise. Got worse, but noticed that the sound is coming from top or rear PD engine. Took a stethescope and pinpointed noise to what I think is the fuel rail on top of the engine. I have no idea what to so from there nor can i find anything similar on line.

 

It is most likely the Cam position sensor synchronizer.
These are know to fail after 80k miles, but do fail sooner.
The common sign of it failing is "high pitched squeal"

Good read here on it: Ford Ranger 3.0L Camshaft Position Sensor

 

Hi. Thanks for the advice. That actually sounds like where I first noticed the noise. Looks like an easy fix. I've replaced the sensor a few years ago, so the synchro part doesn't look too bad to do. Found one for about $40, so worth a try. Thanks again.

 

Your welcome, lets us know how it works out.