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Date:         Mon, 15 Oct 2001 21:46:08 -0400
Reply-To:     Gary McEachern <glmce@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Gary McEachern <glmce@HOTMAIL.COM>
Subject:      compression/vacuum/fuel pressure/O2 voltage
Comments: To: Syncro@yahoogroups.com
Content-Type: text/plain; format=flowed

My son's new '87 syncro is still running pretty rough.


I monitored fuel pressure 30 w/vacuum, 39 without vacuum. GOOD


I measured compression: 160,140,160,155  SO SO?
Plugs look pretty sooty!


I measured vacuum: 15" at 950 rpm, some fluctuation (GOOD/BAD??)
                   20" at 2,000 rpm, smooth


I monitored O2 sensor voltage (with lead disconnected):
0.05V at idle with 30 PSI fuel pressure   BAD?
sensor voltage rises above idle
0.8V with 39 psi fuel pressure at idle (vacuum disconnected)???
(exchanged AFM... No difference!)


I thought I might next check the injectors for spray pattern..


Anything else I should do?


Any comments or suggestions will be greatly apreciated.




Gary


Gary McEachern, Reading Ma.


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