No Start ABY/AAN engine - Problem Found?

[Huw Powell]

> Second, you do not want the pins on the cam. The timing belt has slop
> and the valve springs cause the cam to bounce back and forth in this
> slop. This will cause an ignition timing variance. Because it's on
> the cam that variance will be doubled. You do not want your ignition
> timing bouncing around +\- 10 degrees ;-).

So how come cam-driven distributor spark control systems don't seem to 
do that?

Not saying they are rock-solid, but they sure don't bounce around that much.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/