[16v] DPR/mixture/timing questions

[peter at thescirocco.com (Peter)]

DC milli-Amp's... 

Peter
http://thescirocco.com/

Please! Include the previous text in your reply...

-----Original Message-----
From: scirocco-l-bounces+peter=thescirocco.com@scirocco.org
[mailto:scirocco-l-bounces+peter=thescirocco.com@scirocco.org] On Behalf Of
Nate Mellom
Sent: Tuesday, March 07, 2006 12:05 AM
To: roccit_53@scirocco.cs.uoguelph.ca; Scirocco list
Subject: Re: [16v] DPR/mixture/timing questions

I 'spect I meant 5mA, not .5.  Just to clarify, I'm reading mA AC, correct?
Or DC, I can't remember which one worked :).

And yes, it does smell rich.

Thanks, eh?
Nate


C Boyko wrote:
> On 10:54:52 pm 03/06/06 Nate Mellom <doubt@inwave.com> wrote:
> 
>>Yep, I know it's indicating full rich, which I understand, and can 
>>adjust via the mixture screw (which I've done).  What I DON'T get is 
>>why, while adjusting the mixture, and having set it to averaging .5mA, 
>>it dropped to 0.0mA (full rich) with no input from me, never to return 
>>to a reading at all.  Like I said, the mixture screw was turned ALL 
>>the way righty richy (originally showed 0.0mA), and I leaned it out 
>>and had it good.  Still revved crappy, but then blammo, 0.0mA. I'll 
>>play with it some more this weekend, just out of curiousity, how many 
>>turns lefty leany can I expect to adjust the mixture?  I've read to 
>>turn it 1/8 revolution at a time, but I think when I leaned it out I 
>>was at least a full half turn, just wondering if I should continue 
>>leaning it out a full turn or more.  When I did lean it more than a 
>>half turn, it stumbled and would barely idle, but still reading 0.0mA.  
>>Which got me thinking that the morons who worked on it before I did 
>>adjusted the timing with a bad O2 sensor and a full rich mixture, just 
>>to get it to run half-way good.
>>Nate
>>
>>
> 
> Sometimes after it runs, the numbers seem to change a bit, and it does 
> take a while to settle in after adjusting the screw, but it sounds 
> like something else is messing up, maybe beyond what I've dealt with. 
> And it also sounds like something that has existed beyond a few important
swaps.
> That makes it so annoying, I'm in the same boat with my CIS car, I've 
> changed the whole ignition and fuel system, in some cases, parts wsere 
> swapped a few times, and there's still something not right, and it 
> checks out okay mechanically too. After a year and a half of chasing, 
> you'd think it'd be cleared up, but no.
> 
> And as for how many turns? No idea, mine was adjusted by someone else 
> when it was so far off, and any adjustments I've done after I learned 
> how to do it have been more "fine tuning" from slightly too rich or 
> slightly too lean. (I know my CIS (non-E) car can be quite a few turns 
> off and still run, like ass mind you, but still running) And .5 mA,
shouldn't it be 5 mA?
> I'll go check what my little harness can indicates (I'm useless at 
> remembering numbers, so I have it written down there), but if in fact 
> it's supposed to be 5.0, 0.5 is still rich, and 0.0 would be within 
> the fluctuation you'd expect. Once it's below 0, the DPR is just 
> throwing up its hands and giving up on adjusting it.
> 
> Okay, yep, I have 5.5 mA written in my "can" with the harness as the 
> target. You can confirm that with one of the experts, but I'm guessing 
> that's where I got the value from to begin with. Does the exhaust 
> smell rich? GL eh?
> 
> Cathy
> 
> 
> 

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