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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
One cylinder warming up slow
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<blockquote data-quote="Tazza" data-source="post: 5889" data-attributes="member: 82"><p>With the speed the pistons move when the engine is started there will be more than enough compression to ignite the fuel if the spray is rite. Starting is the hardest part, when its running the compression is very high and the fuel will burn easily.</p><p>If you have no bore damage or worn rings i'd bet it was injectors.</p><p>I tested a set i had by removing the injectors and fuel lines, i then attached a tube line to number 1 on the injector and attached an injector to it hanging out the back of the machine. I then cranked the engine over and watched the spray pattern, a perfect long mist with no fuel drops on the injector. The spray should be nice and even. This will tell you if the pattern is correct but it will not tell you if it leaks or what the crack pressure is. Only do it this way if you don't want to spend any money and to just check the spray pattern. Remember the fuel coming out can pierce the skin, do not put any part of your body around it when you are testing.</p><p>If its an injector problem you really should get it fixed, i'm not sure if its an issue on direct injection engines only or not but i read leaky injectors that make droplets of fuel actually erode the surface of the pistons. It must be something to do with the fuel burning when it sits on the piston instead of a nice fuel/air mixture in vapor form.</p></blockquote><p></p>
[QUOTE="Tazza, post: 5889, member: 82"] With the speed the pistons move when the engine is started there will be more than enough compression to ignite the fuel if the spray is rite. Starting is the hardest part, when its running the compression is very high and the fuel will burn easily. If you have no bore damage or worn rings i'd bet it was injectors. I tested a set i had by removing the injectors and fuel lines, i then attached a tube line to number 1 on the injector and attached an injector to it hanging out the back of the machine. I then cranked the engine over and watched the spray pattern, a perfect long mist with no fuel drops on the injector. The spray should be nice and even. This will tell you if the pattern is correct but it will not tell you if it leaks or what the crack pressure is. Only do it this way if you don't want to spend any money and to just check the spray pattern. Remember the fuel coming out can pierce the skin, do not put any part of your body around it when you are testing. If its an injector problem you really should get it fixed, i'm not sure if its an issue on direct injection engines only or not but i read leaky injectors that make droplets of fuel actually erode the surface of the pistons. It must be something to do with the fuel burning when it sits on the piston instead of a nice fuel/air mixture in vapor form. [/QUOTE]
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General Bobcat Skidsteer Forum
One cylinder warming up slow
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