Both may be right. The fuel lines are sized for liquid propane and may run the engine lean from fuel starvation when on vapor only. My pickup truck with IMPCO brand dual fuel conversion starts better on liquid than on vapor. The fuel tank does not even have a vapor tap, but when I run the tank below 5%, the fuel dip tube can no longer reach the bit of liquid propane in the bottom of the tank and must run on vapor. Under those condition, a cold start involves a lot of cranking, a few lean spits through the carb, and will stall 2-3 times before it finally idles on vapor. The only downside to starting on liquid in cold weather is that you need to allow the engine to idle a bit to heat the coolant to keep the vaporizer working at making propane vapor from liquid propane.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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