Help with my new cam

[Huw Powell]

> I put the new cam in with out any problems. I kept everything aligned
> (Crank and Cam at TDC). The distributor looks like its back to where I
> started at. Now that I'm trying to start it, it runs really ruff, and if
> it does idle, the idle is around 200 rpm. I tried moving the distributor
> a little both directions, but that hasn't helped. I'm a little afraid to
> play with adjustment screw not knowing what they do. My questions are,
> how do I check the timing?

with a timing light, preferably an "advance" timing light that lets you
look at the "0" mark by turning a knob that will then indicate the # of
degrees advance.  You definitely want to start your "dialling in"
process with the engine close to zero degrees or slightly advanced (3-6
degrees maybe) I think.

> What adjustment screws should I be playing with to get her running better?

As pointed out, the idle screw might be used to offset an awkward, lumpy
idle, but it's a kludgey way to do it, it won't help much when cold, for
instance.

These cars with ISV's should not need idle screw tinkering anyway.

What you will want to do, once you get the thing so it will idle ok when
warm, is check the static mixture by measuring DPR current.  Adjust that
with a 3 mm allen wrench poked in to the hole between the fuel dist head
and the big rubber bootie thing.

there are some photos of how to do this at these files (but not specific
to your car):

http://www.humanspeakers.com/audi/timing2.htm
http://www.humanspeakers.com/audi/timing3.htm

just to get you started...

--
Huw Powell

http://www.humanspeakers.com/

http://www.humanthoughts.org/