Useful technique to assist compression tests

[Huw Powell]

> Needed to check the compression in my 87.5 CGT over the weekend.  By 
> studying the wiring diagram, I found that if you pull the horn relay 
> (position 7) and the brass shorting strip in the automatic interlock 
> relay (position 8) and  jumper # 7's "34" contact to # 8's "36" contact 
> together, you can turn over the engine.  I used a remote starter (Harbor 
> Freight Tools Item # 35448) and cut off its alligator clips and crimped 
> on 1/4 inch male disconnect contacts.  That made it easy to insert right 
> into the relay contacts.

Good tip - but you could also leave the alligator clips on, and simply 
attach one to the battery + post and the other to that shorting strip 
(all it will do is energize the "start" side of the ignition switch as 
well as the starter solenoid)

> So it was a simple task to watch the compression gauge while pushing the 
> starter button.  I also removed and grounded the ignition coil's output 
> and tied the throttle wide open to do the checks.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/