Most emissions inspections will allow one incomplete monitor as long as the check engine light is off.
SOURCE: i need a state inspection,
disconnect your neg battery terminal for about 30 seconds and this will clear it
SOURCE: What is the specific drive-time to reset the
what were the codes? It may never reset until u fix it. Most codes aren't intermitten. Not more than 80 miles if doesn't reset then you need to fix problem.
SOURCE: 97 ford f150 will not pass inspection
If you have a component problem (plug missfires, run rich, bad O2 sensors, etc.) the "check engine light" should have come on in the dash. Its possible that warning light is burned out.
You need to get a free scan from Autozone or Oreillys or a similar autoparts place. There may be problems a scanner can pick up or the source of all your problem is the onboard computer which is not lighting up the "Check Engine Light". Either way, a scan will let you at least know the computer is working.
If you have a V-8 with the Aluminum intake, there is a groove under the Airhorn gasket that gets sooted up. 8 bolts and a $10 gasket fixes it when you clean it. Also check the plumbing from the "Backpressure pipe", it goes from Exhaust to EGR pipes at back of engine. This can give burnt sulfur smell on accelleration if there are holes in it.
In some states you get a print out of the test and when they fail the mechanic at least will give you an estimate to fix the problem. There is also a liquid sold at Autoparts places to help your vehicle pass the test. It is a gas additive. Then since oil vapors are drawn into the engine to burn, clean semisynthetic oil will have less contaminants. Do an oil change and new Air filter before testing.
I hope these suggestions are helpful.
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