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Gerry | Vanagon
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Subject:Re: diesel fuel injectors???
Date:Mon, 13 Jan 1997 20:12:11 +0000

>         Hi volks.....another question
> 
> First day on the road with the vanagon...small problems...lost hubcap..found
> in weeds..
> 
> LEAKING fuel injector...QUESTION...is there a procedure and a maintenance
> schedule
> to clean diesel fuel injectors???
> 
> I just finished removing the injector down to the head...WHAT a
> mess...carbon everywhere ...I cleaned with a small bruch in solvent all the
> parts and cleaned out the hole where it sits ...replaced all parts as tight
> as possible (must be some special wrench to use that i dont have???) Haven't
> fired it up yet...SHOULD CHECK WITH THE FOLKS ON THE VANAGON LIST BEFORE
> PROCEDING...
> 
>From the Bentley:

Torques:
Inj to head: 51 ft/lb
Fuel lines to Injector: 18ft/lb
Replace heat shields between Inj & head when installing.

A few notes about cleaning: 
Only use diesel to clean, or gas to remove carbon, but rinse 
immediately with diesel.

Leakage test for injector:
Should hold 110bar / 1595 psi for 10 seconds without leakage.
Opening pressure:
1740 - 1885psi (used)
1885 - 2001psi (new)

The shim inside the injector can be used to adjust pressure:
increase in thickness of .05mm increases opening pressure by 5 bar / 
72 psi.

Note: I have not taken injectors apart myself - this is just reading 
from the book.

Shawn & Janis Wright
'88 Westy (336k) '85 Jetta TD (363k)
VWnut@smus.bc.ca (swright@smus.bc.ca)
http://www.islandnet.com/~swright/vw.html