How to lower my Hydro Carbons?
 

I just failed echeck in my state. I got like 197/174 Hydrocarbons. My other stuff was fine and well below what i need to be.

How can I lower HydroCarbons?

burn more fuel/dont run so rich.

Eat less bread and pasta.

^^ Lol

Do they check the timing in Ohio? If not, just retard the timing. NOx will increase, but these cars usually have a lot of leeway with regard to NOx. You can drop the HC number by a third by doing this. That is why the nefarious California Test Only Stations check the timing every time.

Do you know any mechanics well enough to get the test faked? I pay $80 (the normal inspection is $40) and dont even take my FC out of my garage. I have passed inspection with no cats, and once with no engine.

remove the cap from your variable resistor and mark the screw's location. turn your variable resistor counterclockwise all the way and turn it back in about 1/16 turn and retest it at the smog facility.

It sounds like your acv is not working and or your catalytic converter is not up to spec. Check and make sure the acv is in working order. There are about three simple tests in the factory service manual that can confirm if it's good or bad. Did I mention the free, online, factory service manual?

That along with the advive given above plus new sparkplugs/airfilter/spot on timing/idle adjusted to the fsm

he is only slightly rich at idle, the variable resistor should be able to cure that problem easy enough. even a proper working cat can't necessarily burn all the fuel going through it.

he has a high flow cat

Which highflow cat?

I see. Your right. He's allowed 174 and he's real close at 197. So the variable resistor it is then.

I have to pass a test like this soon so i am glad someone talked about it. But next year i will only have to pass a visual inspection because my car wont be driven more then 5000 miles