I have a 98 Gehl 3725 with the 1.1 ford industrial engine. Converted to propane (before I got it ) and has a model K vaporizer and CA55 carb. The issue that I am having as it seems like the machine is not getting fuel. This problem started after I dumped the coolant and replaced it. Regulator does get cold after I try and start for a while. If I disconnect the feed line from the carburetor and press the primer button I do get fuel. When I reconnect and press the primer button it seems like it is being stopped not coming out anymore. I removed the vacuum operated propane shut off valve to make sure that was not the issue. The engine sounds like it wants to start but I cannot get it going, any help in this matter would be helpful !!