RACACH Posted January 6, 2021 Report Share Posted January 6, 2021 Light on but gauge shows vacuum operating in the green. Adding the standby vacuum and the light goes out. Been told there is probably a small leak at the back of the AI. Anyone else have similar. 1998 Ovation. Quote Link to comment Share on other sites More sharing options...
PeteMc Posted January 6, 2021 Report Share Posted January 6, 2021 What's the gauge show when you switch to the standby, same or something else. And with the engine is off does it drop to 0? It could be a bad gauge and there is a problem. Or a leak in the primary line. If it was a leak in the back of the AI, wouldn't the issue be the same with either pump? Quote Link to comment Share on other sites More sharing options...
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