Looking that way. You could try just repainting the defective panels, but color matching may be an issue and I wouldn't hold much faith for unaffected areas if they have the same clear coating. I have dealt with that same issue on a 3rd Gen Camaro when I worked at a body shop years ago and it...
In order to make it right, the clear has to be removed, then normal paint prep from there on in, many reasons this happens but the the repair is as basic as it gets.
Check these guys:
https://www.rareparts.com/TRES2026R-26137-TIE-ROD-END?quantity=1&custcol_rp_part_location=OUTER&custcol_rp_part_application=5168326&custcol_rp_vehicle=1986-Chevrolet-K10
Limited Lifetime Warranty.
Then there is...
ECU?
Also is the electrical signal even getting to the injector?
Read this thread:
https://ls1tech.com/forums/generation-iv-internal-engine/1606848-dead-cylinder-i-am-stumped.html
A good paint cleaning, take a red 3M scuff pad then clear coat it. A red scuff pad is super quick and equivalent to 400 grit, just don’t go great gonzos on scuffing, avoid finger grooving, use backing. May take more than one to scuff entire vehicle.
On a stock engine if I can recall, vacuum at warm idle MAYBE around 21hg steady and fuel 4-6 pounds at carb. Others will hopefully add their thoughts on this question.