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Date:         Sat, 15 Sep 2007 21:25:25 -0700
Reply-To:     Bob Donalds <donalds1@VERIZON.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Bob Donalds <donalds1@VERIZON.NET>
Subject:      Re: Rich on side, lean the other?
Comments: To: Mike Collum <collum@VERIZON.NET>
Content-type: text/plain; format=flowed; charset=iso-8859-1; reply-type=response

I cant remember if the injector grounding is in pairs per side on the drivers head or not intake boots are cheap and might look good but pick up some boots and intake gaskets and remove reseal both manifolds I just removed the intakes from my own van and found the area around the manifold to head gaskets was a little more than most. I disided to use little hi tack in both side of the intake gaskets just to see what happens. This would be a great time to unplug the coil wire and check spray parterns and volume of the injectors. The problem with swaping is that the fuel lines is that they don't come apart as easily as they season how seasoned are your lines

Im high on the real thing A clean windshield a full tank of gas and rebuilt injecters with new fuel lines

bombs away dad

----- Original Message ----- From: "Mike Collum" <collum@VERIZON.NET> To: <vanagon@GERRY.VANAGON.COM> Sent: Saturday, September 15, 2007 5:41 PM Subject: Re: Rich on side, lean the other?

> Just for grins, Mike, have you tried swapping the injectors from one > side to the other to see if the indications change? > > Mike > > > > Michael Elliott wrote: >> I'm hunting for the reason that Mellow Yellow gets about 15% poorer >> mileage than other similar vans. See >> >> http://camping.elliott.googlepages.com/poormileage >> >> to see what I've learned so far about this 1.9L 1984 auto transmission >> with only 75,000 miles on it. >> >> One oddness I've found is that both plugs on the passenger side indicate >> lean condition, while the plugs on driver's side indicate rich condition. >> Where could such an asymmetry come from? >> >> There are NO visible signs of air leaks. The intake runners don't have >> any >> cracks, are tightened well against heads; the plenum/runner sleeves are >> clean and intact; and there are NO cracks in the exhaust bits that might >> cause a false-lean reading at the O2 sensor -- this is a southern >> California car and we outlawed snow and salt in 1932. >> >> This lateral mixture imbalance has me quite puzzled. I am getting little >> fret marks between my eyebrows! I'm dumping in a buttload of Techron >> injector cleaner in case the injectors on the lean side are packed up and >> the ECU is overcompensating by running #3 and #4 rich. >> >> But . . . and but, the overall mix at the O2 sensor indicates /lean/ on >> the highway, oddly (see >> http://camping.elliott.googlepages.com/poormileage). >> >> I am replacing the O2 sensor on Monday. Because. >> >> -- >> Mike "Rocket J Squirrel" Elliott >> 71 Type 2: the Wonderbus >> 84 Westfalia: Mellow Yellow ("The Electrical Banana") >> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano >> KG6RCR >>


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