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Date:         Tue, 29 Jul 2003 08:50:39 -0700
Reply-To:     Doktor Tim <doktortim@ROCKISLAND.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Doktor Tim <doktortim@ROCKISLAND.COM>
Subject:      Re: Was my Vanagon Trying To Tell Me Something?
Comments: To: Jeff Stewart <fonman4277@EARTHLINK.NET>
In-Reply-To:  <003501c355e1$30477da0$4db1bf3f@compaq>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 07:53 AM 07/29/2003, you wrote: > I've been running all this time with a vacuum leak!. Jeff

Just shows to go ya why the Bentley, in the opening paragraphs of the fuel injection section require, you first rule out vacuum leaks prior to FI diagnostics. You just can't skip to the where ever in the section and start correct procedure. Correct procedure must start from the beginning and skip no steps. Also note that verifying fuel pressure comes before touching any of the electronic control system. The fuel pressure test would have shown over pressure/over rich pointing to the pressure regulator.

To make all the special rubber fittings and hoses last a longer life, keep them cleaned of oil and dirt. This has much to do as well in keeping electrolysis from getting started.

You did well. Periodically you should look over the whole of the compartment to first rule out apparent faults. Don't wait for things to become a problem. Recognize the value of actual inspection with Bentley in hand. Once per year at least clean the motor, the battery, the wheel wells and suspension while looking and feeling and smelling and listening around. More often as your conditions require.

Another place for hose issues is above the fuel tank. Periodicly wash the top of the tank. Put the front on jack stands and pull the front wheels. Follow the lines to and from the plastic tanks. Shine a light above the suspension. If you lower the tank but a few inches, you can replace the hose connectors there as well. Note the special cross pipe is fastened to the floor above. When you drop the tank, one or both of the fittings will pop out of it's grommet in the tank. Just pop them back in after remounting the tank. Note those vapor tubes run to a vacuum switch just in front of the engine on the right side. A few more hose connectors there, and one of those will give you the same symptoms of un-metered air.

You can get 15 years out of these hoses in many cases. When one shows age replace it and inspect all others.


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