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Date:         Mon, 6 Jul 1998 19:37:57 -0400
Reply-To:     Seth F Gordon <sethgordon@MONTYSBAY.COM>
Sender:       Vanagon Mailing List <Vanagon@vanagon.com>
From:         Seth F Gordon <sethgordon@MONTYSBAY.COM>
Subject:      Re: no power: running lean (i think)
Comments: To: vanagon@vanagon.com
Content-Type: text/plain; charset="iso-8859-1"

If your problem is the rings wouldn't you get crappy mpg and burn >oil/have blue exhaust? You'd get crappy mpg cause after a while of >burning oil, you'd foul the plugs and valves.

That is the kicker. I don't really know what the problem is. If one cylinder has bad compression and is markedly improved by adding a little oil, is'nt that the rings. I feel as though I have checked every possible cause. The other interesting thing is that plugging in the ox sensor causes a greater loss of power while trying to accelerate acctually there is very little loss of power with the oxs out. So when this first happened I unplugged the sensor and drove it as little as possible and then put it away for the winter. For the summer I decided to drive it and just for the hell of it plugged the oxs back in. no problems? I guess this means I am oppening it up for comment, please tell me what this weirdness is.

ps the compression is still bad, and the only sign of problem is a sooty tail pipe.

seth gordon 84 wolfsburg weekender -----Original Message----- From: Fred Porter <fporter@eyring.com> To: Seth F Gordon <sethgordon@montysbay.com> Date: Monday, July 06, 1998 7:05 PM Subject: Re: no power: running lean (i think)

>If your problem is the rings wouldn't you get crappy mpg and burn >oil/have blue exhaust? You'd get crappy mpg cause after a while of >burning oil, you'd foul the plugs and valves. > >Seth F Gordon wrote: >> >> I have very similar symptoms with my 84. I thought it was a valve for sure. >> after compresion tests (compression improved w/some oil). I have come to >> the conclusion it was the rings. The point to this message is that I burn >> very little oil and have an average gas milage 18-20 mpg? who knows? the >> shop will probly find your problem but that was (is) my experience. >> >> seth gordon >> 84 wolfsburg weekender >> -----Original Message----- >> From: Fred Porter <fporter@EYRING.COM> >> To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM> >> Date: Monday, July 06, 1998 6:03 PM >> Subject: no power: running lean (i think) >> >> >Within the past week, my 87 syncro has suffered a dramatic loss in >> >power. With the following symptoms, does my diagnosis of running lean >> >sound correct? >> >-no clouds of black or blue smoke coming out of the tail pipe (not >> >running rich or burning oil--burning oil would indicate a loss of >> >compression through the rings) >> >-it still idles and revs smoothly, just no power. >> >-the temp needle is running unusually high. >> >-fairly good gas mileage. >> >-It seems to run ok when i first start it cold in the morning, but as it >> >warms up and the temp needle goes past the LED power degrades. BTW, the >> >blinking LED has NOT come on. >> > >> >if it is running lean, my first suspect is the AFM--slow response or >> >limited travel of the vane. What would be other sources of the problem? >> >I would question clogged fuel injectors since it is still running >> >smoothly--all 4 injectors would have to be clogged equally. >> > >> >recent maintenance: new cap and rotor, 15w50 oil and filter, new air >> >filter, new ignition switch >> >less recent maintenance: new OXS, new plugs >> > >> >when i drop it at the dealer tomorrow, i'm going to have the following >> >checked: >> >ignition system, fuel injectors, compression leakdown, EFI diagnostic >> > >> >if it is loosing compression via the valves, what are those symptoms? >> > >> >thanks, >> >fred >> >87 syncro 180+kmi >> > >


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