Date: Sat, 14 Jan 2012 16:31:10 -0500
Reply-To: David Beierl <dbeierl@ATTGLOBAL.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: David Beierl <dbeierl@ATTGLOBAL.NET>
Subject: Re: Grey oily spots on rear hatch
In-Reply-To: <1326574915.20356.YahooMailNeo@web39402.mail.mud.yahoo.com>
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Trim your tails, please. (see below) :)
Yours,
d mod
At 04:01 PM 1/14/2012, Anthony Egeln wrote:
>Mine's not a diesel engine, but have had coolant spray on back hatch
>when I had a coolant leak. Could it be coolant? Anthony '89 Syncro
>GL (Hidalgo) ________________________________ From: ralph meyermann
><ralphmeyermann@GMAIL.COM> To: vanagon@GERRY.VANAGON.COM Sent:
>Saturday, January 14, 2012 3:43 PM Subject: Re: Grey oily spots on
>rear hatch Thanks Scott,its not leaking fuel maybe some oil? Have to
>investigate further on that, glow plug question though since the po
>screwed up a glow plug and hole on the rear cylinder I had it welded
>closed,could that be a possibility of not burning or burning
>correctly? Dont know if the plug stays hot enough to help ignite the
>fuel when plugs are not energizes, I know that they are in contact
>with the spray pattern. I know just enough about diesels to get
>myself in trouble!!! Velma 82diesel 1.6 na westy On Jan 14, 2012
>2:17 PM, "Scott Daniel - Turbovans" < scottdaniel@turbovans.com>
>wrote: Hi.. I sure hope it's not diesel fuel ! If any fuel.. either
>that leaked out of or off the engine .. that can get to the rear
>hatch. If fuel goes thorough your combustion chambers and comes out
>the tail pipe unburnt.. you're in some serious trouble there . and
>even if that is happening ( unlikely , more or less ) .. the
>purpose of having the tail pipe at a rear corner of the van is too
>have those fumes ( or liquid droplets ) pulled away from the van in
>the vortex that's generated at speed there. so .typically ...a
>leaking fluid, usually oil..like out of leaky shaft seals or
>excessive blow-by originates at the middle lower part of the rear of
>the van, and is blown right up onto the rear hatch. Quite common on
>DV's as I said. if you had unburnt fuel, like a lot, going through
>the engine it likely would not be running that well either.
>Personally .. I don't just 'toss in rebuilt injectors' .. I've
>gotten bad new rebuilt Bosch injectors before. I would spray test
>them ...sometimes I'll go through a dozen injectors to find 4 really
>good ones.. just like that picture in Bentley ..nice spray pattern.
>You could also have one, or more, leaking . so fuel is dribbling out
>of them when they are not being fired ... that sort of 'fit's even
>.. It's never a waste of time to check compression and spray test
>injectors.. and whenever injectors are out ...energize the glow
>plugs to see how fast then come on , make sure none of them are slow
>or dead, etc. re pump pressure ... pump guru's will know more about
>that .. and ...a 1.6 TD pump and injectors run at a higher pressure
>than 1.6 NA ones ( 130 bar versus 155 bar I believe ) and a 1.6 TD
>injection pump and injectors will run a 1.6NA engine a little better
>than a stock 1.6 NA injection pump in my experience. Besides poor
>injection pump performance, very good injectors ... the other 'Big
>Thing' is COMpression .. if that's not there pretty good ..nothing
>counts in a diesel.. and it's one of the numerous 'challenges' (
>disadvantages I say ) of diesel engines.. the engine depends on it's
>own condition to run right . you should check valve clearances too.
>The first DV engine I ever got ...when I checked them ..exhaust
>clearances there are suppossed to be .014 to .018
>inches.........something like that.. were down to .008 ...in other
>words, extremely closed up. ( and even with clearances set....there
>was still a failing exh valve 300 miles from home a month or two
>later..I knew right off the bat I should have pulled that head ..
>and ..it was an 11mm head and block anyway ..which I wouldn't want
>to deal with at all anyway ) So ya gotta check that too.. and
>injection timing .. and really ..for it to last very well at all...
>to not smoke or leak, and to have good power... etc ..it 'ALL' has
>to be right on a diesel , especially a VW diesel. And often old
>stock 1.6 NA's are very tired.. but finding out what you really
>have is the right place to start. the 3 main things I would do right
>away ..besides looking for fuel leaking off the IP .. or oil shaft
>seal leaks, or some coolant leak.....are.. check compression, valve
>clearances and injector spray patterns. to start with. and if it's
>stock 82 it's not hydraulic lifters...though someone could have put
>a hyd lifter engine in.. it's easy to tell which if you know what to
>look for. And confusingly .. I have seen a hydrualic lifter head
>with solid lifter cam followers in it. what fun ! Scott
>www.turbovans.com ----- Original Message ----- From: "ralph
>meyermann" < ralphmeyermann@GMAIL.COM> To: <vanagon@GERRY... > I've
>noticed on some of my drives I've been getting grey oily spots on
>my > rear hatch! I believe ...
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