Thanks to those who offered their suggestions on a recent overheating problem. John Sargent recounted a similar problem that pointed me to unclog the water distribution pipe (see the cause below).

Now, another problem for your suggestions. The engine requires about 30 seconds of cranking before it will fire, when cold. When warm, it starts immediately. The engine runs well otherwise and I believe the SU-HS4s are properley adjusted and synchronized. I suspect the fuel is not being drawn into the intake manifold when cold. Is there a secret to adjusting the choke cable? Is the fuel pump weak or looses prime? Is there a blockage in the float bowls? Are there any other problems to look at?

All recommendations are welcome. Thanks....Cam