Well i have a 92 civic cx hatch with stock motor and 170 k miles on it. One problem i have been having recently is burning oil. I took it in for the test with some oil and failed Hydrocarbons and Carbon Monoxide.
Standards: .80 15.0
Readings: 3.40 60.7

What do i need to do other than a tune up? Any additives that help? thanks in advance.

 

I'm pretty sure you failed a Gross polluter.
I'm about 90% sure you need your oxygen sensor replaced.. then get some Oil additive or use 20w50. If those don't work, probably gotta replace the cat.

 

tune up, o2 sensor, cat. clean egr valve and get some lucus oil.

 

Thanks guys for all ur help. Hope i pass.

 

ki11a8ee I am a new user, i am interested in one of your items in the classifieds. please e mail me. puggs25@shaw.ca

i am interested in your MF2

 

theres a fuel additive called seafoam you can pick up at a local auto parts store. I would try that before dumping too much cash in

 

I think Spade probably explained the emission's test the best: https://honda-tech.com/zerothread?id=701236 also has a nice chart for you to help figure the possible problem with the engine.