[Vwdiesel] cold start function

[LBaird119 at aol.com]

  Without the later model, additional linkage the rpm will not change when 
you pull out the cold start knob.  It's simply a timing advance that should 
make it start and idle better when cold and have a sharper diesel knock 
sound.  If it doesn't then the cable's either not pulling the lever properly 
(broken or adjustment)  or the pump timing's incorrect, usually retarded.
  With the knob clear in, look behind the pump and check that the lever 
the cable is connected to is seated against the bent-metal-bracket stop.
If not then loosen the screw and adjust.  If it's too tight then the knob 
won't go all the way in.  
  My guess is the timing was set with the knob pulled out so it'll be about 
.15mm retarded (.85mm instead of 1.00mm).  Nothing wrong with setting 
it closer to 1.05mm most of the time.  :-)
  Slow cranking is usually from a low battery (new doesn't mean it's fully 
charged/charging or good), not charging or not fully charging, bad or just 
plain too small (even if original) positive battery cable, bad ground (alt 
for 
charging or battery to body or tranny) or a worn starter. Generally the gear 
drive starters don't slow as much as the older ones.  Mine doesn't seem 
to crank quite as fast as the older type either though.
    Loren

In a message dated 2/14/2006 10:31:24 PM Pacific Standard Time, 
kel-digitronics-pl at shaw.ca writes:

> The problem I am having is the cold start has absolutely no effect when I 
> use it. The previous owner says it's been that way since he had it (along with 
> the rebuilt head).
> When the car is warm the car runs good, but not having the cold start when 
> the engine is cold makes it hard to start, and rough till it heats up.
> Any thoughts? I found some info on the pump on the net (kits, blowup 
> diagrams etc.) but it doesn't really mention the cold start.
> The lever on the pump moves, but no change in rpm's.
> I don't know if this helps, but it's not as fast turning over the engine as 
> my last car ,also same since last owner.
> (brand new battery recently)
> Thanks for any help you can give
> Paul
>