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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Fuel Pump Primer Bulb.
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<blockquote data-quote="ajwgator" data-source="post: 122197" data-attributes="member: 226"><p>Take a volt meter set to measure 20vdc, connect the positive lead to the top of a glow plug, negative lead to ground, energize your glow plug circuit and read the voltage that is on the meter. It should be close to your battery voltage while energizing the circuit. I'm like you I don't think one bad glow plug would cause the problem. How old are your glow plugs? They my be weak or close to failing and not getting hot enough. They do wear out but still heat some.</p><p></p><p>Have you checked the fuel line inside your fuel tank? On my 843 the fuel line was cracked inside the tank and it would suck air once the fuel got below the cracked hose. It also had a really clogged up fuel pick screen on the end of that hose. I put a primer bulb on mine machine thinking it needed assistance but once I fixed all the fuel hose problems in the tank the primer bulb stays tight and doesn't seem to be needed anymore. The fuel pick up screen is also a check valve that prevents fuel from draining back into the tank so the lines are always full.</p><p></p><p>My unit is still hard to start when cold but it is being caused by low compression when the engine is cold. Once it gets up to operating temperature it starts up fine.</p></blockquote><p></p>
[QUOTE="ajwgator, post: 122197, member: 226"] Take a volt meter set to measure 20vdc, connect the positive lead to the top of a glow plug, negative lead to ground, energize your glow plug circuit and read the voltage that is on the meter. It should be close to your battery voltage while energizing the circuit. I'm like you I don't think one bad glow plug would cause the problem. How old are your glow plugs? They my be weak or close to failing and not getting hot enough. They do wear out but still heat some. Have you checked the fuel line inside your fuel tank? On my 843 the fuel line was cracked inside the tank and it would suck air once the fuel got below the cracked hose. It also had a really clogged up fuel pick screen on the end of that hose. I put a primer bulb on mine machine thinking it needed assistance but once I fixed all the fuel hose problems in the tank the primer bulb stays tight and doesn't seem to be needed anymore. The fuel pick up screen is also a check valve that prevents fuel from draining back into the tank so the lines are always full. My unit is still hard to start when cold but it is being caused by low compression when the engine is cold. Once it gets up to operating temperature it starts up fine. [/QUOTE]
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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Fuel Pump Primer Bulb.
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