Without knowing the specifics of how badly you failed and what particular emmisions were out of whack I'd guess you should check all the vacuum hoses and intake boot to make sure they aren't leaking and adjust the throttle position switch.  Installing a new fuel filter and doing an oil change won't help emmisions but can't hurt.  If you have an O2 Sensor and it is a bit old (46k to 96k km or more), replace it.  Run some good quality injector cleaner through it and make sure it is well warmed up before the next test.

Chuck
'85 Wolfsburg Westy - 'Roland the Road Buffalo'

In a message dated Fri, 22 Jun 2001  3:01:25 PM Eastern Daylight Time, Kenneth Madsen <ncc0778@CORP.ATTCANADA.CA> writes:

<< I recently took the 87GL 2wd for our mandatory emmisions testing here in
Ontario, and failed.
Which parts of the engine should I be paying attention to when tuning it to
tolerable levels.

I was thinking replacing spark plugs, wires, distributor cap and rotor, fuel
filter, air filter, changing oil and timing.

Can anyone else give some insight or tips for a good tune-up?

Ken Madsen
Toronto Ontario

87GL (Flash)
87 Golf Diesel (Smokey)
95 Jetta GLX (Black Beauty)
 >>