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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
M610 Propane problems
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<blockquote data-quote="LGS Enterprises" data-source="post: 9365" data-attributes="member: 1200"><p>Well, I registered to add my .02..... I'm a forklift mechanic so I have a little bit of experience with LP systems. I am not familiar with vh4d engines or garretson regulators but it all should function the same. The propane in the tank travels thru the hose as a high pressure liquid, thru some sort of lock off valve, electric or vacuum operated, into the regulator which turns the high pressure liquid into a low pressure, often 3-5 psi, vapor that enters the carb that meters the vapor by a diaphragm operated by engine vacuum. The regulator is plumbed to carry coolent thru it in order to prevent it freezing up from the venturi effect from the metering of the high pressure liquid. When the unit is cranking and not starting, try spraying some carb cleaner or flammable brake clean at the carb and see it it catches. If that does not work, try restricting the vapor hose for the propane to the carb. These 2 things will determine if it isn't getting enough fuel, lock off valve bad, or if the regulator is allowing it to flood out, too much propane vapor, bad regulator. If the regulator is icing up, make sure you have coolant, not just water, going thru it and there is a operating thermostat in the engine. This is a water cooled engine, right? Without the unit in front of me, I'm going to guess the regulator is bad. Installing new kits is a 50-50 shot of it working due to the extreme tempurature differences inside it, they warp and crack.</p></blockquote><p></p>
[QUOTE="LGS Enterprises, post: 9365, member: 1200"] Well, I registered to add my .02..... I'm a forklift mechanic so I have a little bit of experience with LP systems. I am not familiar with vh4d engines or garretson regulators but it all should function the same. The propane in the tank travels thru the hose as a high pressure liquid, thru some sort of lock off valve, electric or vacuum operated, into the regulator which turns the high pressure liquid into a low pressure, often 3-5 psi, vapor that enters the carb that meters the vapor by a diaphragm operated by engine vacuum. The regulator is plumbed to carry coolent thru it in order to prevent it freezing up from the venturi effect from the metering of the high pressure liquid. When the unit is cranking and not starting, try spraying some carb cleaner or flammable brake clean at the carb and see it it catches. If that does not work, try restricting the vapor hose for the propane to the carb. These 2 things will determine if it isn't getting enough fuel, lock off valve bad, or if the regulator is allowing it to flood out, too much propane vapor, bad regulator. If the regulator is icing up, make sure you have coolant, not just water, going thru it and there is a operating thermostat in the engine. This is a water cooled engine, right? Without the unit in front of me, I'm going to guess the regulator is bad. Installing new kits is a 50-50 shot of it working due to the extreme tempurature differences inside it, they warp and crack. [/QUOTE]
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M610 Propane problems
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