Warm blooded truck

[wjpatton]

Above 65 degrees F, my 1990 truck starts immediately and runs perfectly. Between 50 and 65, it cranks for 3 or 4 seconds before starting and runs great. Below 50, it cranks longer before starting, and often, I have to crack one of the injectors to bleed the system until fuel squirts out, then it stumbles and starts. What the heck kind of air leak is so temperature related?

 

[cerberusiam]

Fuel lines, start there.

 

[wjpatton]

Fuel lines, start there.

Thanks, will do! I also have a new fuel pump, no idea how old the current one is.