Date: Mon, 8 Oct 2007 13:19:17 -0400
Reply-To: Poppie Jagersand <poppie.jagersand@YAHOO.CA>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Poppie Jagersand <poppie.jagersand@YAHOO.CA>
Subject: Re: diesel engine not start when cold but great once warm
In-Reply-To: <ccd73a10710080039o48771298u101c4ccc48f38ad1@mail.gmail.com>
Content-Type: text/plain; charset=iso-8859-1
White smoke on start is usually unburnt or partially burnt
Diesel. Not a good sign. Basically the compression in the
cylinders doesn't generate enough heat to ignite the fuel.
In the worst case you need an engine rebuild.
Some easier/cheaper things to check:
1. Are all glowplugs good? Just one bad/weak glowplug
can make the VW Diesel much harder to start.
See http://www.cs.rochester.edu/u/jag/vw/
for how to check.
2. Air or bubbles in the fuel line. Even very small bubbles cause
hard starting (and sometimes bad running). Check both lines to
the fuel injection pump, and the return line. A pinhole leak in either
input or return lines will let the fuel system drain and it takes about
a minute of cranking to refill. (This excessive cranking is not good
for either starter or fuel pump)
3. Injector spray pattern. Take them out and check at a Bosch
fuel injection shop. Usually found under truck service in YP.
Martin
Roger Whittaker <rogerwhitt1@GMAIL.COM> wrote: Dear all diesel know hows ...
i have a 1.6 Turbo Diesel OEM 1989 Vanagon
in the morning or after a 2-3 hours sitting ... it is very slow to catch
when starting ...
Procedure ...
I turn the key on to warm glow plugs no less than 6 times ...
Pull handle on dash (which reminds me of a decompression valve)
put stick in neutral
turn key to engage starter
the engine winds ...
(sometimes because of carburetter trained foot i press fuel ) (but not very
often)
(doesnt help any way)
engine winds for 30 seconds sometimes a minute
then almost catches ... then another 30 seconds winding
and away she goes and cloud of very white smoke is the expulsions ...
when it is warm .. the engine goes zoom zoom after first glow plug warm up
....
winds over less than a turn or two ... indeed almost instant start...
no smoke on those starts ...
i have same results regardless of last time i changed oil ...
in the summer this is hardly an issue at all so long as temp outside doesnt
go below 20 degrees c at night
suggestions>>>???
yours
--
roger w
There are two kinds of jobs in the world:
Picking up garbage and telling people things.
Successful people do both, with the same good attitude. (riw)
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