Date: Tue, 2 Sep 1997 21:14:04 -0700
Reply-To: David Chasteen <dchaz@GTE.NET>
Sender: Vanagon mailing list <Vanagon@Gerry.SDSC.EDU>
From: David Chasteen <dchaz@GTE.NET>
Subject: Re: Unreal oil consumption on diesel Vanagon
Content-Type: text/plain; charset=us-ascii
I had an 80 rabbit that did the same thing. There is a hose that you can get from
the dealer that routes the oil back to the pump. A simple "Y" type hose. Sorry
I cant give you anymore information that that. My brother-in-law burned the poor
thing up by running it approximately 20 miles with insufficient fluid in the
radiator.
Good Luck.
Chaz
82 Westy "Peewee"
Brownfield, Tx
Dennis Haynes wrote:
> I would check the crankcase ventilation system. The steady stream of smoke
> indicates this. This was a common problem with diesel rabbits. The oil would
> flow up the vent and fill the intake manifold. Sometimes to the point that
> the could would not slow down when closing the throttle. As you fitted a non
> Vanagon engine in there, you may have a baffle problem or need to rig some
> type of oil separator/return to get the liquid back to the crankcase. Also,
> make sure you are not over filling the engine. Try running it a quart low and
> see if the situation improves. As far as I'm concerned, a VW engine should
> never be filled to the top mark anyway. Hope this helps,
> Dennis
>
> -----Original Message-----
> From: Vanagon mailing list On Behalf Of Gary A Meek
> Sent: Wednesday, August 27, 1997 2:23 AM
> To: Vanagon@GERRY.SDSC.EDU
> Subject: Unreal oil consumption on diesel Vanagon
>
> Several years ago, I rebuilt my 1.6 litre TD motor, putting
> in 20 thou oversize pistons, and fitting them with Hastings oil
> and compression rings - all chromium.
>
> I ran conventional oil for several thousand miles, then
> switched to Delvac 1, the Mobil synthetic designed for diesels.
> I slowly began using oil, at first a litre every thousand miles.
> Then several months ago, down to two hundred miles to the
> litre. At that point, I went back to Delvac conventional oil, as I
> could not afford the $ to keep feeding the motor, synthetic oil.
>
> On my holidays just completed, the consumption increased
> to about 50 miles to the litre. Needless to say, when checking
> the oil, it has the cleanest oil for a diesel! The exhaust is sky
> blue and never black.
>
> Back home, I just completed a compression test, thinking
> the rings must be worn or broken for some reason. The
> compression values average 480 psi throughout, which is
> what they were three years ago.
>
> My question is then, can the compression rings be good,
> but the oil scraper ring fouled or broken? Alternatively, can
> the valve stem seals be so leaky as to allow oil to leak into the
> combusion chamber?
>
> The motor has never ran low on coolant, or over heated. I
> changed the turbocharger, thinking the impeller was drawing
> oil from the oil lubricated bearings and driving it into the motor.
> Oil consumption was unchanged.
>
> I'm baffled, annoyed and disgusted. What is the percentage
> likelihood of leaky valve stem seals versus defective oil scraper
> rings? ? ? Any other possibilities not heretofore considered? ?
>
> E-mail me directly if you have a clue, as the head is coming
> off today at 1100 hours.
>
> Gary A Meek
> Sherwood Park, Alberta
> Canada
>
> 82 Vanagon, turbo-diesel
> 83 Quantum, turbo-diesel
> 83 Audi, turbo-diesel
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