Timing belt align to rotor problem.

[Fred Munro]

Denis;

I haven't been following your thread too closely and I haven't worked on an
engine with a distributor for a dog's age, but I vaguely recall from the
years I did that it is possible to get confused if cyl #1 is not at TDC on
the firing stroke, it's at TDC on the exhaust stroke. The distributor will
be 180 degrees out.

I'd recommend pulling the cam cover, rotating the engine, and watching the
valves to make sure the #1 piston is coming up on the compression stroke
(intake valve has opened and closed) and both valves are closed when #1 is
at TDC. Now check the TDC mark on the flywheel to make sure it lines up. I
don't know what you've done or if it's possible that the cam timing is way
off, but with the flywheel on the TDC mark and the #1 piston verified at TDC
on the firing stroke, both #1 valves should be closed and the cam marks line
up. The distributor rotor should be pointing to the #1 cyl wire (I think
there is also a distributor mark that lines up with the rotor, but it's been
a long time - that may be another car :O). I'd set everything up that way
and rotate the engine by hand through one cycle until the marks line up
again to make sure there is no interference. You may have to start from
scratch and move things around to get everything to line up. Take your time
and think it through. There's likely nothing "weird" about your engine - it
ran before and it'll run again. I've been down this road years ago on
several engines - go back to basic principles and work it through.
Oh yeah - make sure you don't get the firing order screwed up if you pull
the wires off the distributor and don't put the distributor cap on 180
degrees out :o)

Good luck!

Fred Munro
'94 S4 (distributorless)

-----Original Message-----
From: quattro-bounces at audifans.com
[mailto:quattro-bounces at audifans.com]On Behalf Of Denis
Sent: December 30, 2004 5:12 PM
To: Kent McLean; quattro at audifans.com
Subject: Re: Timing belt align to rotor problem.


  I have a timing light and i checked the firing on the first cyl.
  The timing tells 15 degres Before TDC so the fire is ok even the distr
rotor is 180 degres away, and the cyl 1 sparkplug wire is located 180degres
away when the cam and crank are at the marks.

  The crank pulley pin, cam sprocket pin and the distr pin are ok. So
nothing has been twist.
  The front  crank pulley mark correspond to the flywheel mark.

  I m searching about the sparkplug wiring location on the cap...

  Ðenis

  The engine is running good with my setup but does not run at all with the
setting on Bentley book. The engine was like that before i got that car. I
just wanted to do all things good as the factory did. I just discovered its
not.


    ----- Original Message -----
    From: Kent McLean
    To: Denis ; quattro at audifans.com
    Sent: Thursday, December 30, 2004 4:47 PM
    Subject: Re: Timing belt align to rotor problem.


    Denis wrote about his distributor:
    >  I never touched it.
    >  It clamped there, i must take the grinder to remove it.

    Well, then, that's probably not the problem. :)

    Unless the rotor has been misaligned.  But I don't think that
    can happen either.  You've double checked the spark plug
    wires and firing order. Hmmm...

    Do you have access to an oscilloscope to test the output
    of the ignition system?  Maybe pay to have an automotive
    electrical shop do it for you?

    Kent
    '94 100 S Avant
    '89 200 TQ, "Bad Puppy" has a new home



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