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Snowglobe vacuum/boost gauge 700

posted by  dylant on  Wed Apr 9 06:23 CST 2003
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last visit: Tue Oct 16 15:08 CST 2001
[RELATED]

A few months ago the face of the instrument cluster vacuum/boost gauge became coated with a white powder. Looks like talcum powder. There were no engine vacuum symptoms, and the gauge still works fine. It's stock, and graduated. I haven't seen this in other 740s. It seems fairly accurate. Anyone know why this might happen? I'd expect it to be a blown diaphram if it stopped working, but it hasn't.

Thanks
Dylan






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