[Vwdiesel] TD Aneroid/Spaceship adjustment

[Will Taygan]

Thanks, Loren for the details.

I've reset the max fuel screw up (although the lock nut is beat up, so
I'm thinking the PO fiddled with it.

I also found the max/mix and factory settings on the aneroid (one screw
needed a little hammer tap and some P'Blaster, so I don't think the po
fiddled with that.  I turned it down to a minimum.  The kid doesn't want
to go for a ride, so I'll have to wait to test it.  If things don't work
here's the next plan:

++++++++++++++++++

pull aneroid line.
set max fuel screw so it doesn't smoke.

put aneroid line in.
adjust diaphragm by spinning (moving eccentric) so no smoke
readjust max fuel if necessary
adjust idle screw on accelerator cable if necessary

if it still smokes at high rpm
turn screw on top on aneroid down, (effectively putting a stop in
downward aneroid travel at the high end? - or is this resetting the
range of the eccentric, allow even less fuel throughout the boost range?
I guess I'm still hazy on how the plunging of the aneroid alters fueling
- it's the pin movement in and out, yes?)
--------
This should maximize fuel in the low rpms without smoking at the high
end (max fuel screw without aneroid)

This should allow maximum fuel without smoke throughout the boost range
(spinning aneroid diaphragm)

This should stop and remaining smoke at high rpms (adjusting smoke screw
at top of aneroid)


**I'm just guesssing on pulling the aneroid line to set the max fuel.

Logic only work if the underlying premises are true.



On Sat, 2005-06-11 at 21:49 -0400, LBaird119 at aol.com wrote:
> In a message dated 6/11/2005 6:32:02 PM Pacific Standard Time, 
> william at taygan.com writes:
> 
> > >I've lowered the max fuel screw about 1/2 turn. (still smoking at high
> > >rpms though).  I'm assuming that this only affects the full boost
> > >(aneroid down) level and that turning the max fuel screw down is not
> > >lowering my fueling at low rpms?  Is this correct??
> 
>   Not really.  Although the max fuel screw does in reality just 'lift the 
> lid' for the maximum fuel, it's more of a sliding scale with the bottom 
> end still accessable by adjusting the idle.  If you turned it 1/2 turn 
> and didn't change the idle, it sounds like you turned the wrong 
> thing.  Turning it 1/2 turn should not only make the idle really slow, 
> it should really lower your maximum power.  You'll have less fuel 
> under non boost conditions as well (if you turn it down) making boost 
> lag longer.
>   Like Andrew said, unless the injectors are known good to great, then 
> do them before you mess with anything else.
> 
> > 
> > >My thought was to lower the max fuel until it wasn't smoking at high
> > .rpms, and then turn the aneroid so the dot was closer to the 6 o'clock
> > 
> 
>   The dot is irrelevant other than your own personal reference AFIK.  I've 
> never really checked but I highly doubt that it's oriented the same on 
> every cone/diaphragm assembly.  It's simply a washer with a dot which 
> makes it easier to have a location to put things back.  DO NOT undo the 
> nut, simply because there's no need.  Just pull the diaphragm out, look 
> down the hole to see where the pin is (I never remember which side it's 
> on) then look at your cone for the mark of where the pin's been sliding. 
> That will let you position it back where it was.
>   With all else well, smoking only under full to nearly full boost, full-ish 
> throttle, etc would simply be the cone orientation or the "smoke screw."
> That would be the adjustment on top of the aneroid.  Down would limit 
> the travel and cut down the maximum, under boost, fueling.  If it 
> smokes too much under most boost conditions then rotate the cone 
> so that it's farther away from the pin, on its eccentric.
> _______________________________________________
> Vwdiesel mailing list
> Vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel
>