re: debugging the L-Jetronic

[Godfrey DiGiorgi <ramarren@domain.elided>]

Again, thanks for all the good suggestions. I seem to be making good 
progress.

I spent a bit of time testing last night. I've discovered that 

- - the thermo-time sensor is working perfectly.
- - the Cold Start Valve seems to be working well, although it's 
  difficult to judge whether the output is the properly fine 
  mist it ought to be. 
- - the wiring between them is in good condition.
- - there are no air leaks of any kind that I can discover.

New behavior showed up yesterday afternoon and this morning: drastic 
surging for a short period at 1/4 or greater throttle, followed by a POP 
from under the hood, then smooth running again. Hmm. 

I called my mechanic today. "That surging sounds like the Air Flow Meter 
is sticking to me. The one that was on there was a bit sticky when we 
first got it running. I cleaned it up and it seemed to be working 
smoothly, but I have a known good one in my personal stash if you want to 
try it." I drove up and bought his spare, installed it this evening. 
Definitely an improvement ... with the one I had, it often felt a little 
uneven in response. With this one in, it idles and revs more smoothly, 
responds more evenly to the throttle. 

Only bit left (auxiliary air device) I can only check with the engine 
cold, so that will wait 'til tomorrow morning. If I still get the stumble 
on cold starting, I'll swap in the used one I ordered from APE today. (I 
figured at $20 it was worth it anyway.)

I'm ruining my reputation as a checkbook mechanic, I'm sure. ;)

Godfrey

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