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Old 04-11-2005, 08:15 AM   #1
tompetey
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Member#: 73034
Join Date: Oct 2004
Location: Rochester, NY
Vehicle:
MY02 OBS

Default Engine Problem

Ok,
This weekend, I had my computer hooked up to a monitoring tool for diagnostics. We looked at all the different readings with the car at idle. It appears that, unless the scan tool was wrong/off, I was only getting about 7.8in/hg for vacuum. Does this seem right? I am not sure what the spec is suppose to be but in the other cars (not Subaru), we were getting readings around 16-19. Can anyone let me know if this is a problem...
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Old 04-11-2005, 08:20 AM   #2
Hayes
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Location: Cape Coral,FL
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I would think your off by a factor of 2X? Where do you take the vacuum reading?
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Old 04-11-2005, 08:43 AM   #3
tompetey
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The reading is just part of the OBD-II diag that we have. It is not a shop computer or anything. We just did it out in the driveway.
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Old 04-11-2005, 08:44 AM   #4
tompetey
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How can I do a true vacuum reading? What tools should I use, where should I do it?
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Old 04-11-2005, 02:11 PM   #5
tompetey
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any more ideas other than compression test since I lost my tester and now have to go to the dealership for that. (or buy new tester guage)???
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