Dwell / Duty Cycle Q.

[camron at worldaccessnet.com (Camron D. Crouse)]

Sean Whalen wrote:
> Yes, yes, and yes.  They're all dependent on each other.  A new o-ring 
> will make a world of difference.  Air can be your enemy.

Thank you, thank you, and thank you!

And what about the breather hoses - will the values be close enough if 
they are in running position, or, if only the L nipple to the intake 
boot is in the test position? I did get that to fit snug, ya just gotta 
stuff it in there. Really I'd rather do it "right", but if it's 
splitting hairs then no biggie.

  - Camron from Vancouver, WA USA
    '86.5 Black 16V 2.0L


***************



> On 5/10/07, *Camron D. Crouse * <camron@xxxxxxxxxxxxxxxxxx 
> <mailto:camron@xxxxxxxxxxxxxxxxxx>> wrote:
> 
>     Forgot to add:  Checking the duty cycle of the *Idle Stabilizer
>     Valve*... just to clarify.
> 
>     New info:  checked with hoses in place, the lowest value I could obtain
>     (via adjustment of the idle air bypass screw only, leaving the A/F
>     screw
>       in the fuel dist. alone) was 66%, Bentley target is 26-30%. Red probe
>     on grey/white wire, black to ground.  I actually turned the idle air
>     bypass screw quite a few turns, and quite easily with my bare hands...
>     must need a new o-ring there? It is currently at full clockwise.
> 
>     Do I need to go back and readjust the the A/F screw on the fuel dist,
>     then check duty cycle again? Are these two adjustments
>     interactive?  And
>     if I adjust the ignition distributor timing, do I start over?
> 
>     Thanks!
> 
>     - Camron from Vancouver, WA USA
>        '86.5 Black 16V 2.0L
> 
>     *********
>     Camron D. Crouse wrote:
>      > Checking duty cycle values for 2.0 16V Scirocco w/CIS-E +TT fuel
>      > enrichment module.  DPR current successfully set while at full
>     running
>      > temp, 10mA +/- 1mA with a brand new auto-ranging multimeter.
>      >
>      > Trying to accurately check duty cycle.  Bentley describes
>     disconnecting
>      > crankcase ventilation hoses, but the illustration seems to depict a
>      > fuel-distributor-on-passenger-side setup, and the hoses don't quite
>      > correspond so I am unclear on which crankcase hoses I actually
>      > disconnect and at which points (Bentley illustration shows a
>     ventilation
>      > hose with a nippled T in it, but I have no such T).  In addition,
>     the L
>      > nipple to the intake boot does not fit snug while in the test
>     position.
>      >
>      > Do you folk make this check with hoses disconnected or in running
>     position?
>      >
>      > BTW I am going through DEQ tomorrow so that I can bring my
>     registration
>      > up to date.  Tuning for passing E-check, so stock settings wanted...
>      >
>      > TIA!
>      >
>      > - Camron from Vancouver, WA USA
>      >   '86.5 Black 16V 2.0L
>      >
>      >
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> 
> -- 
> Sean
> A-1 x 2