GL: Gennerator radiator cap problem.

[John Esch]

I got this from a member and it should be for the group.
Two things.
Go to a radiator shop and have the cap tested 
for the proper pressure to release the expanded air and coolant.
2. When you replace a radiator cap, make sure the radiator
is pretty well filled with coolant, not water only. When you 
fire up the genset, watch the temp gauge. When the thermostat
opens the coolant temp will drop, then go down as the coolant
circulates. Just before, or not long after, the overflow tube will
spit out coolant from heat expansion. Normal. Make sure that
the overflow tube is in coolant in the overflow bottle. As the
engine cools down the system will pull coolant back into the
the radiator. That way there is little or no air in your cooling
system. THis is how it works on all engines since about 1969.

Regards,
Rick Redfern