So I bought the 93 Toy base. Got the 22RE and I just failed smog.
High Speed CO Result 1.44% needs to be lower than 1.20%
High Speed HC Result 290 needs to be lower than 220
I was stupid and did not get the cat hot enough but would that be enough to pass? I do need to adjust the valves because you can hear them pretty good. Any suggestions or help if your in the Vegas area.

 

Do a tune up,new plugs,rotor & cap & plug wires if more than 5 years old!
And change the oil & filter( yes dirty oil will fail you)!
And do run it up & down the freeway before going in!!

 

I will give it an oil change and drive on the freeway for a while until I get it nice and hot and see where that gets me.

 

There's a product at most of the auto parts stores called Guaranteed To Pass. I can't swear by it, but it seems to help if you have a car that your worried won't pass. might be worth a try.

 

oh by the way it does burn some oil

 

Go here, read ALL of this.
'94 22RE Idle Emissions Fail... - Toyota Nation Forum : Toyota Car and Truck Forums

 

Avoid engine additives ---there's more harm than good!!

 

Still the original cat . In some cases burning oil and suit from a high mialge motor can coat the cat in gunk reducing its effectiveness but I would do the above mentioned plugs cap wires air and fuel filter PVC and valve adjustment

 

So I got a fresh oil change and drove it for 15 mins on the freeway and i got a worse score. The plugs were changed a year ago. It looks like the original cat. The air filter is brand new. I think I will do the valve adjustment and a new fuel filter and see if that works. I also got a small leak of oil somewhere. I have a brand new cat but it's for a 97 corolla. I don't know if it would fit. LOL

 

High HC and CO (generally) means you're running rich. Those numbers are also things that should be taken care of by the cat. However the CAUSE of those numbers is what matters and I think it has more to do with the burning oil.
A. The oil itself is additional burnable fuel in the cylinder and can use up some oxygen that would normally go to produce CO2+H20 causing the high CO number. Or, if it doesn't burn, it itself is a hydrocarbon and obviously therefore being picked up as HC on the emissions test.
B. burnt oil (soot, chemical byproducts, unburnt additives) can poison both the O2 sensor and the catalyst. If it's working a little and close to the limit, I've seen people clean them to get better emissions test results. It's risky though because it involves pulling off a spark plug wire to cause a dead miss on one cylinder (place the loose end against bare metal of the block or head to short it to keep arcs from going all over) while holding it about 2500 rpm: dumping fuel out the exhaust and when it gets to the catalyst, it ignites and causes a major temp increase in the catalyst. It's risky because A. you can melt the cat. B. have you ever been zapped by an ignition spark? I suppose you could get similar results in our trucks by retarding the timing a lot. Obviously this is a short term fix and doesn't always work. (By the way this was taught to me and demonstrated on a 5-gas analyzer in class by one of my auto tech teachers who spent 10+years working a shop that did emissions and driveability across from an emissions station in the Chicago 'burbs.)

Fuel filter won't help. if the ignition system is weak or compression low, fixing those will help. Burning oil is likely from old valve stem seals (unless the rings are badly wornd). I wouldn't bother adjusting the valves till after you get this done. Running high mileage oil may help some in the long term with the oil leaking past the seals, it has conditioners that cause the seals to swell. Downside is if you switch back to non-high mileage oil, the seals shrink back and after wearing in the swollen shape, this can cause even worse leaks. Luckily our 22REs are pretty easy to get to the valve train, not like my 7M or the 2JZ

Holy crap how'd that get so long?

 

great info. have you replaced the o2 sensors at all?

 

i just dump the stock timing

 

Ok so i bought everything needed to adjust the valves and I noticed something. This Hose was not connected. Could this be a problem for smog? What is it?

 

Thank you kamesama980.
what a good explaination.

 

hmmmmmm, vacuum leak oughta cause the opposite to happen on the emissions reading but yes, any disconnected vacuum lines will mess up the emissions. Any idea where they go?

Hopefully you can find where they go somewhere in here: 91 Toyota Pickup Photos by kamesama980 | Photobucket

 

someone on this site said it was to adjust the idle for the A/C.

 

Also, seafoam ur truck. I've read a in a few forums it helps when getting smogged. Or just make some friends!!! lol

 

It's much easier to get a new cat, had the same problem, emissions to high, got a new cat and problem fixed

 

Yeah but the friend will charge me $100. I rather just fix it. Believe me I thought of it.

 

So I adjusted the valves and corrected the idle. I failed once again. I think I will buy a new cat and see if that works. If not I will have to rebuild the engine. I think it might be worn rings or valve seals. Who knows? Well I hope this works.