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General Discussion
Dirty-Max injectors
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<blockquote data-quote="jdsharp81" data-source="post: 413431" data-attributes="member: 8276"><p>even if they were all bad, it would still crank. the best thing to do is to find someone with an edge insite or some sort of monitoring device that can read and display the engine info. you need to know desired frp (fuel rail pressure) vs actual. duramax needs at least 4k frp to crank. i would definatly make sure that you are primed ( primer should be hard to press if you are ). Just remember that a diesel only needs fuel to start, so somewhere your are lacking that. not likely, but if you blow a fuse for glowplug moduel, it will not send power to ficm to allow fuel to pass through. ( that would be last case though ) </p><p></p><p>fuel system componets on lb7</p><p>primer</p><p>ficm ( fuel injection control moduel ) square looking box on passenger side of motor towards front</p><p>cp3 ( fuel Pump ) in engine valley</p><p>fpr ( fuel pressure regulator ) on cp3</p><p>i cant remember if the lb7 has an fprv ( fuel pressure relief valve )</p><p></p><p>I would go with the gas on a rag, not good for a newer diesel, ok on an older tractor without all the sensors, but not on todays diesels</p></blockquote><p></p>
[QUOTE="jdsharp81, post: 413431, member: 8276"] even if they were all bad, it would still crank. the best thing to do is to find someone with an edge insite or some sort of monitoring device that can read and display the engine info. you need to know desired frp (fuel rail pressure) vs actual. duramax needs at least 4k frp to crank. i would definatly make sure that you are primed ( primer should be hard to press if you are ). Just remember that a diesel only needs fuel to start, so somewhere your are lacking that. not likely, but if you blow a fuse for glowplug moduel, it will not send power to ficm to allow fuel to pass through. ( that would be last case though ) fuel system componets on lb7 primer ficm ( fuel injection control moduel ) square looking box on passenger side of motor towards front cp3 ( fuel Pump ) in engine valley fpr ( fuel pressure regulator ) on cp3 i cant remember if the lb7 has an fprv ( fuel pressure relief valve ) I would go with the gas on a rag, not good for a newer diesel, ok on an older tractor without all the sensors, but not on todays diesels [/QUOTE]
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