Odd 4K no start

[Huw Powell]

> Thanks for the prompt replies. I have verified spark by pulling a plug and
> having it grounded on the strut and cranking and I see spark. This means
> that my hall sensor, cap and rotor checks out. Car had a tuneup with new
> plugs, rotor have less then 3k on them.

"Spark" is a relative term.  Was it a bright, almost blue thing you 
could see in plain daylight, or yellowish or even orangey?

> I smell fuel after cranking it several times, so I assume that I get fuel. I
> bought a CIS injector puller recently, but not the gaskets/o rings yet, but
> will pull an injector to double check.

You smell it at the tailpipe, right?  You might not be getting enough, 
or getting way too much, of course.

> Other question, what are those two round connectors on the right side of the
> engine that I spliced back together? I know one is for the reverse lights,
> but the others?

Upshift light, I believe (fifth gear disabling)

> Grant, what do you mean by checking voltage at the wires? U mean resistance
> from end to end? I have another set of wires and an extra additional
> ignition coil.

You can measure the resistance of the plug wires, bentley has the specs. 
  Are they in decent shape?  (how old?)

> Tony, I figured that the 4k only uses the distributors hall sensor for the
> ignition system. I assume the reference pins that are mentioned in the
> Bentley where only for the turbo engines...

Yup.

You mentioned checking timing, I assume you checked crank/cam timing 
*and* ignition timing?

Are the intake manifold ground wires (two brown ones to a stud) good and 
clean?  No obvious "vacuum" leaks?  Nice strong battery and good fast 
cranking?  You might want to get the starter current measured, or you 
can crudely test by measuring battery voltage while cranking.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/