Truck stalling when stopping

[Thatbroncokid]

Rerouting fuel hose made no difference unfortunately. Removed #1 plug and it looked perfect. Thinking about doing a compression test. Don’t really know what to check next so I’m just gonna start testing everything. If anyone has any other ideas, feel free to chime in.

 

[Rustytruck]

Put a vacuum guage on and see how steady the engine runs.

 

[Thatbroncokid]

Put a vacuum guage on and see how steady the engine runs.

Steady 22 inches. I set my idle mix with a vacuum gauge. When the idle drops after the engine is hot, so does the vacuum reading but it’s dropping almost 500 rpm so that makes sense that the vacuum reading would change as well.

 

[Thatbroncokid]

Figured it out. Put on a carb spacer and wrapped my fuel lines and it’s running like a top now. Fuel getting too hot was the problem obviously! Thanks for the input guys.

 

[Justafordguy]

I'm glad that fixed it, Todays fuel with alcohol has a much lower boiling point than fuel did back when these trucks were made so this is a very common problem.