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Date:         Sat, 6 Oct 2001 13:13:25 -0700
Reply-To:     Todd Last <Rubatoguy@MINDSPRING.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Todd Last <Rubatoguy@MINDSPRING.COM>
Subject:      Re: Engine Running Rich
Comments: To: John Rodgers <jhrodgers@CHARTER.NET>
Content-Type: text/plain; charset=us-ascii

That would be me (I think): http://rubatoguy.home.mindspring.com/afm.html

Mostly just shows it taken apart - but you can see the spring wheel.

Todd

John Rodgers wrote:

> Jay L Snyder wrote: > > > I would check the fuel pressure at the tee near the regulator. Should be > > around 29 psig. Sometimes they get crapped up and cause higher pressure > > than they are set for, pushing more fuel through the injectors. The ECU > > can only compensate so much in terms of injection time. Go through the > > Bentley checklist using a multi-meter at the ECU connection. It will tell > > you what readings you should get and indicate any shorts. I also would > > measure the VDC coming off of your O2 sensor. Run the engine until it is > > warm and then shut it down. Disconnect the O2 sensor wire and read the VDC > > when the engine is running. Should be 0.7VDC or slightly higher. Does > > your temp gauge read OK? Last resort would be to open up the AFM and lean > > out the spring by a few notches. Tightening the spring will lean it out. > > Go 2 or 3 notches and drive. At some point, it will stumble from being too > > lean. Back up from there. I put a new AFM on my '85 and was able to go 6 > > notches leaner,if I remember correctly. I connected the voltmeter to the > > O2 sensor wire to check the signal as I was driving down the road. Don't > > go too lean--slightly rich makes the engine run cooler. > > > > Jay '85 Westy > > A while back, someone posted a website that had pictures of the internal works > of the AFM, and described how to open clean, adjust, replace, and reseal the > unit. Great information. Is that site still available. Are the pics still > there. I's like to know for my own re-edification. > > Thanks, > > John Rodgers > 88 GL Driver


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