Second time failing smog.. Couple questions. (1 Viewer)

[82off]

Bought a '92 from a friend and he said it should have no problem passing smog but of course it's not.

I'm failing at idle.

HC(PPM): max is 120.. I'm at 123
CO%: max is 1.0.. I'm at 1.14

Also no vacuum at EGR so I failed that. Does that have much to do with emissions being high?

Shop suggested a new Cat. Is that over the top? I can weld so its not the biggest deal except they are still expensive and its seeming hard to find a legit OEM one. What do you guys think? Should I do that and if so any suggestions on where to find one?

After it failed the first time I replaced plugs and air filter. Both of those things seemed way overdue. It dropped the CO% by about .2 but need to get it down more. I should've done the wires and Distributor too but didn't. I'll do that but I'm not sure it'll do enough to pass.

Any feedback is super appreciated.

 

[voodu3]

This might help

92 LC running rich (High CO and HC) failed emissions...

First off, I would like to thank the community that is IH8MUD. I have spent countless hours reading on these forums the past two months and have gained a vast wealth of knowledge. This happens to be my first post so I will try my best to be as thorough as possible. To give some background...

forum.ih8mud.com

 

[82off]

This might help

92 LC running rich (High CO and HC) failed emissions...

First off, I would like to thank the community that is IH8MUD. I have spent countless hours reading on these forums the past two months and have gained a vast wealth of knowledge. This happens to be my first post so I will try my best to be as thorough as possible. To give some background...

forum.ih8mud.com

Thank you. Lots of info there.

 

[BILT4ME]

Also add a couple bottles of Heet to the gas tank, drive it around for a solid 30 minutes to get it good and warmed up, then get in there and get it done while still good and warm. Hopefully not a big line.

 

[LongDuck]

Also consider changing oil and new filter. If its burning any amount of oil, dirty oil won't burn cleanly and will inflate emissions numbers. Learned this from a lifetime of driving rotary engine Rx7s that inject oil into the intake path to lube apex seals. Clean oil might pull you across the finish line. Good luck,