Pontiac: Need some help with my Grand Prix

I have recently purchased a 1986 Pontiac Grand Prix LE with a 305 and I have
to get an emissions test done but my "service engine soon" light is
constantly on. I have already failed one E test, and have done a few basic
things to try to help it pass on it's second try, but I noticed that there
was no check engine light while I start the vehicle. With some careful
removal of the dash trim etc., I found that the service engine soon bulb was
not there. I replaced it and now the light is constantly on. I have tried to
get the error codes out of it, but it does not give me any.
I noticed what looks like a few vacuum lines missing but I can not tell
where or what else should be connected. Does anyone have any vacuum line
diagrams for this car?
I do not want to have to spend a fortune to take it to a dealer to have it
diagnosed. Is there anything I could try?
Any help that I could get from here wold be greatly appreciated.

Duane

dont do anything to it set your air mixture screws 2 full turns out and
have the smog man repair it. you will just be wasting more money
changing the wrong parts, probably need a power valve in the carb by
now.