How to pass air care?

Question

My vehicle recently failed air care, which means that it polutes too much. In some metropolitan regions air care is required for a vehicle to be insurable, such as mine. How can I reduce my vehicles emissions? Will E85 help?

Driving Test
Hydrocarbons (HC)
Average: 53
Maximum Allowable: 247
Reading: 53
Result: Pass

Carbon Monoxide (CO)
Average: .21
Maximum Allowable: 1.82
Reading: .17
Result: Pass

Oxides of Nitrogen (NOx)
Average: 681.70
Maximum Allowable: 2,620
Reading: 680.10
Result: Pass

Idle Test
Hydrocarbons (HC)
Average: 216
Maximum Allowable: 323
Reading: 347
Result: FAIL

Carbon Monoxide (CO)
Average: 1.05
Maximum Allowable: 3.72
Reading: 2.45
Result: Pass

Failed with Hydrocarbons on Idle test

Answer 1

I am a smog tech, and the question you ask is a bit ambiguous. How did it fail? Was it for missing parts? Was it strictly for emissions? Was the "Check Engine Light" on?
Need to know what the report says.
CLUES---->>>
High HC HC is fuel. Simply fuel that went into the engine and came right back out again through the tail pipe. It never burned.
High CO CO is fuel that partially burned, but the fire went out before all of it was consumed.
High NOx Nox is oxides of nitrogen. Caused by failure of devices provided for the reduction of NOx, or timing too far advanced, or the engine running too hot.
If the Catalytic converter has been poisoned, any one or all three of these levels can be high.
E85 will not help your car if it wasn't designed to run on it.
If you like, email me with the results of your test, and I will try to give you some direction, but be warned, this is like trying to diagnose what kind of cancer you have over the phone.
It might save you some time, effort and money to just pay a Smog Tech Diagnostician to tell you. It May be something you will have to pay to have repaired anyway.
Good Luck

Answer 2

I know I have used AvGas and it helped lower it, you can get some of this at local airports (not major airports,) Check EGR valves and O2 sensors. Change Air Filters also. If all else fails, and you have a friend that lives outside of the emission area you can move your car registration to there. Good luck