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FJR Motorcycle Forums
Technical & Mechanical Problems
Engine only runs with vacuum line disconnected
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<blockquote data-quote="Zpetrus" data-source="post: 1447333" data-attributes="member: 98038"><p>Thanks RR for the insight / suggestion. I did the test - reconnected the vacuum line to the pressure regulator and disconnected the vacuum line to the pressure sensor, blocking off the removed line. The engine started, ran, and revved as before with just the vacuum line to the regulator removed. Does that mean that the pressure sensor (MAP) is bad? I pulled a spark plug and it appeared wet and black (new plug yesterday) see photo. Am I correct in assuming that this is what would be predicted by running the engine with a vacuum line open?</p></blockquote><p></p>
[QUOTE="Zpetrus, post: 1447333, member: 98038"] Thanks RR for the insight / suggestion. I did the test - reconnected the vacuum line to the pressure regulator and disconnected the vacuum line to the pressure sensor, blocking off the removed line. The engine started, ran, and revved as before with just the vacuum line to the regulator removed. Does that mean that the pressure sensor (MAP) is bad? I pulled a spark plug and it appeared wet and black (new plug yesterday) see photo. Am I correct in assuming that this is what would be predicted by running the engine with a vacuum line open? [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Engine only runs with vacuum line disconnected
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