Re: how to set the timing on 87 ranger 2.9
First question, do you know about the spout connector? The "spout" connector is a jumper plug on the end of a small bundle of wires near the air charge temperatue sensor, about half way back on the passenger side of the intake manifold. You need to unplug the spout connector plug before you set the basic timing. The timing marks were not that easy to understand the first time I looked at them either. I have an 86 but I think they are the same. Looking down on the damper's timing marks, the full width mark on the left has T C along side of it. They didn't put many marks on the damper. If I remember 12 degrees is on there, then 20, then 27 and 33. The factory calls for 10 degrees which is the short mark before the 12 mark. I have also used the 12 and it seemed to run fine, just listen for any knocking, depending on the quality of the fuel in your area and other factors of your engines condition. Hope this helps. I will look at mine again in case you have any more questions. Remembr to replace spout connector, of course, and don't lose it, its unique.