Date: Fri, 2 Jul 1999 18:08:42 -0400
Reply-To: Mark <fairlane@KODE.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mark <fairlane@KODE.NET>
Subject: Re: [DIESEL] High Idle Problem Fixed! (I hope)
In-Reply-To: <000001bec4bb$78c35bf0$2b880018@ocnsd1.sdca.home.com>
Content-Type: text/plain; charset="ISO-8859-1"
Diesels have more blowby at idle than at speed. Rev it up a little and
you'll
see. It's the time it takes to bleed through the rings that causes this.
*********** REPLY SEPARATOR ***********
On 7/2/99 at 11:48 AM Michael Snow wrote:
>This morning, I disconnected the breather from the intake at the
>"T" fitting above the valve cover. I started the beast up, let
>it warm a few minutes, and began playing with the pump. I was
>able to get it to hang at higher than normal idle, eliminating
>the blow-by question.
>
>While doing this, I noticed that the pump was vibrating to the
>point where it looked blurry to me. The bolts holding the pump
>bracket to the block were loose and allowing the entire assembly
>to vibrate. I think that somehow, the frequency of the vibration
>at a certain engine RPM caused a fuel delivery problem within the
>pump, causing the engine to run at the higher RPM.
>
>The fix (temporary): I tightened the bolts as best as I could
>with a 6mm allen wrench. Test drive at varying speeds up to 50
>MPH showed no incidence of previous problem. The camper now
>accelerates and decelerates smoothly, and runs much quieter to
>boot! I think there should probably be some kind of lock washer
>under these bolt heads, but there is not on mine.
>
>In regard to blow-by, I did notice that there is a volume of air
>coming though the breather hose at idle, and presumably more when
>cruising. No noticeable oil or fuel was on my palm after holding
>in front of the hose end for 15-20 seconds. I also cut 1/2 inch
>off the valve cover breather hose, as it was cracked. There is a
>fair amount of oil making its way into the breather system from
>the valve cover. It sprayed a few droplets on my hand, and there
>was a thick film of oil inside the hose. Certainly this is being
>burned in the combustion process, but I don't know how much it
>could contribute to powering the engine. It seemed to be no
>worse than most of the Chevrolets and Jeeps I have worked on with
>regard to oil traveling through the breather system. Is this
>normal for the 1.6?
>
>In the next week or two, I will have an idea of oil consumption.
>I am trying to fix all the leaks this weekend.
>
>Many thanks to all who took the time to help me with this. Have
>a good 4th of July :)
>
>Mike Snow
>'82 Westy diesel
---- Mark (fairlane@nospam.kode.net) Remove nospam to email me ---
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