Extremely cold blooded engine

[taz112]

I have a 1986 Venture Royal that runs great when warmed up. The problem is it takes about 20 minutes of running under load before it stops stalling. After warmed up if I stop for more than five minutes it stalls again until run five or ten minutes under load. This is very frustrating, any one else experience this? Thanks for your input!

 

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[Chaharly]

Have you checked your fuel filter? If it looks good then I would try pulling your pilot jets out and feeding a G or B guitar string through the orifices. I find that the E string felt too small

[Flyinfool]

Start by checking the exhaust pipes when starting from cold to see if they are all warming up at the same rate. Maybe you are not running on all 4 cylinders. These bikes run amazingly well on 3 cyl (some never notice that they lost one) and still run but noticeably rough on 2 cyl.