Posted by Jon Hagen on January 07, 2008 at 08:47:20 from (12.175.230.37):
In Reply to: Propane Freeze? posted by steve_ne on January 07, 2008 at 06:15:17:
You have no coolant flow through the vaporizer section of the converter/ regulator. You have a clogged fitting or collapsed hose. Make sure the engine coolant level is full, low coolant will cause no circulation through the vaporizer.
Make sure the water pump is turning normal speed and possible bleed air from the coolant lines if the converter is mounted higher than the head. any chance it's plumbed wrong? The coolant usually comes from a high pressure area like the head or thermostat housing and returns to a low pressure area like the inlet side of the water pump or lower radiator tank.
You most certainly have no coolant flow to warm the converter to counteract the cooling effect of vaporizing liquid propane. Get the coolant flowing through the vaporizer and the thing will work. My Oliver tractors with the converter/vaporizer mounted above the engine will freeze the converters if I allow the radiator level to get low. Normal operation with warm coolant will have the converter quite warm to the touch.
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