[Vwdiesel] More Quantum Questions?

[mark shepherd]

http://cgi.ebay.co.uk/Brand-New-7-Inch-Locking-Pliers-Mole-Grip-Grips-Clamp-/160455757501?cmd=ViewItem&pt=UK_Hand_Tools_Equipment&hash=item255be88ebd
----- Original Message ----- 
From: "William J Toensing" <toensing at wildblue.net>
To: <vwdiesel at vwfans.com>
Sent: Sunday, July 18, 2010 5:58 AM
Subject: [Vwdiesel] More Quantum Questions?


>
> I advanced the IP (moved towards the engine) & it now starts with 3 or 4 
> tries. It also has a diesel rattle that was suggested but didn't exist 
> before. However, no change in sound or RPM when the cold start is out or 
> in. Am wondering it the IP is now advanced too far?

Bill, this is defininitely getting better huh?
Don't worry about the increased noise, if this is where it needs to be, 
slightly increasing the idling revs may help.   It's a good idea to take a 
timing gauge reading for reference purposes.

Have you slackened and retightened all injector nuts to remove any tension 
in the lines?

With the measurement taken, you can try advancing a little further, or back 
slightly.

Do not worry about ther lack of effect on the idling with the cold start. It 
is very marginal on the early engines. It was not until the end of the mk 2 
stuff that VW added additional linkage on the pump to increase the revs with 
the pull out.

Reuse washers by all means if theyare not damaged . Use one of these:
http://cgi.ebay.co.uk/Brand-New-7-Inch-Locking-Pliers-Mole-Grip-Grips-Clamp-/160455757501?cmd=ViewItem&pt=UK_Hand_Tools_Equipment&hash=item255be88ebd

along with a 3/8"ball bearing and a 3/4"nut to repeatedly do a 'metered' 
press of the shield.

For a few reuses at least, the shield can actually seal better than new. If 
you look closely at the underneath of a shield, you will see concentric 
machined ridges. These actually cut into the ledge in the head. Each new 
shield cuts new unique furrows a bit like a farmer's plough: This wears the 
flesh down, if  the injectors are 'played with' extensively over the years.
Most bubbles of diesel in the head thread is down to weeping of the rubber 
return lines and not significant seeping of diesel past the shield. Check 
with a dry finger tip.

The Bentley is good generally, but not great, and is a copy of the VAG 
workshop manuals. I have a few of the VAG ones, but it soon becomes clear 
that they were off target often and on a learning curve like us, as some 
chapters contained 10's of 'new policy' bulletins in the back. Think 
Microsoft software ;o)


> Something I failed to mention was I did not new injector washers per 
> Bentley instructions nor did I hit the old washers in the center so that 
> the center part would be raised to mate with the injector. Could this have 
> any effect on starting? If not, why does Bentley instruct using new 
> washers when an injector is R&R'ed.
> Bill Toensing, Nevada City, CA.
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