How well does it SOUND like it runs?
The other two guys Tony M and Joe H, are or may both be correct.
Check your plug heat range an see if it is the correct plug for the truck.CHeck your points ,set them and then set the timing as well.
,
Is your truck still 6-volt?
Have you read Kens post on how he set his points in the dark? grin
May help.

.
Let us know

There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
-
-
Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!