Can someone show fuel adjust for 1HDT

[Martin White]

I've seen several threads on adjusting this - but I still don't know exactly where the screw is. I'm a little challenged on these diesels - I don't have a manual and what I do have doesn't show the adjusting screw. Silly question: Is it easy to do while in the truck? If so I'd like to do a little experimentation, because based on my EGT's I need to turn it down a bit. I'm wondering if someone could post a pic, maybe 2, with an X or -> marking the spot.

 

[hdj105]

Just look for the same screw on your pump as shown in the picture below

You need to screw it out (anticlockwise) to reduce the fuel. You'll need a 12mm and a 6mm spanner.

 

[gmalpass]

This link explains it very well. Have fun and be careful.

http://www.lcool.org/technical/80_series/1hdft_pump_adj.html

 

[Martin White]

Thanks. I've never seen that before. There is so much to learn about these vehicles and so many things that can be done. I'm repeating myself but I have adjusted the fuel screw and I'm seeing prelim results of about 20% better fuel economy with basically no loss in driveability. Plus, it's idling more smoothly and the shake is completely gone. Hmmmmm.