Stuart, I am having this issue on occasion, with similar conditions: heat soaked, i.e. long climb, Mobil 1 syntheitc and get the buzzer just after letting off of the throttle, i.e. cresting the hill. I'm also having very infrequent but associated with the buzzer episodes a split second valve clatter like once a year, but it will happen two or three times then not again for a year. Can you shed any light on the possibility of these events being caused by a worn pressure relief valve. Sincerely, Mark Keller 91 Carat |
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