Timing is not adjustable.
What was the code no.
Set the dist as shown in link.
http://files.automotiveforums.com/ga...hp?photo=51302
http://www.automotiveforums.com/vbul...d.php?t=881442
After truck is started and running get a engine capable scanner and set the camshaft retart as close to -0 or +0 as you can get it.
This is done by turning dist.
And it has to be over a 1K rpm for the new adjustment to readjust on scanner reading.
Also make sure fuel pressure is up to par.