On the CO part. Allowable is 0.63, it tested at 0.89. The tester said it smelt a little rich. I put 55 miles on the car just before testing it. It runs great, no SES light, I do notice a little pulse at idle but nothing major. I think the car had a O2 sensor put in it a while back along with plugs. Any ideas?

 

Check the tune up parts.
Check the ign. timing.
Check the fuel pressure & make sure it holds psi after the engine is off.

 

Well, it has been in the shop for one day so far. They've tested all the sensors, put on a new cap and rotor because they looked well worn and it helped some but still just a hair to high on CO's and running a little to rich. He is thinking cats now. He'll get a price for me and call me in the morning. He said the previous tester put it down as dual exhaust instead of single so he said he can replace one cat and try it that way.

 

If u dump so much money into it and it wont pass u get a awesome waiver and u wont have to do it now more (for some states) Check ur laws.