Finally a reason to buy a 2000 or 2001 XJ

[blondejoncherokee]

Evaporative emissions from fuel tanks are a significant source hydrocarbon air pollution. The evap system is designed to store the gasoline vapors from the fuel tank in the charcoal canister, and burn them later when the engine is running.

The test itself is pretty lenient compared to the required OBDII self test the new cars run. A pinhole of .020" will set a check engine light on the new, 96+, cars, .040" leak is a pass for the 95 and older vehicles.

OK very good to know. So basically if the evap test fails then get a new charcoal canister and lines to and from it?

 

[Bryan C.]

OK very good to know. So basically if the evap test fails then get a new charcoal canister and lines to and from it?

Canister? Most likely no. Hoses? Yes. Vacuum testing each line for leaks is better, then test the tank and cap.

 

[Letterman]

yeah, my ex-girlfriends roomate's cousin's brother-in-law's sister has a friend who knows a guy with a smog license and he said this was how it is working now.

Can you double check with that guy?

Thanks

 

[jeepme]

This is great news!!! but I still think its all ass backwards. Isnt reducing pollution and making air quality better the whole reason behind the smog check? If so then the sniffer test should be the ONLY test that needs to be done, no visual and all that. I mean the tailpipe is where all the bad stuff comes out into the air. :dunno:

 

[blondejoncherokee]

This is great news!!! but I still think its all ass backwards. Isnt reducing pollution and making air quality better the whole reason behind the smog check? If so then the sniffer test should be the ONLY test that needs to be done, no visual and all that. I mean the tailpipe is where all the bad stuff comes out into the air. :dunno:

this is my exact train of thought. Agree 100%. maybe I'm just dense but I don't get the rest of it all.

 

[Gary Briggs]

Just be thankful we don't have those state inspections here, none of our vehicles would pass.

 

[blondejoncherokee]

Just be thankful we don't have those state inspections here, none of our vehicles would pass.

good point. Mine would pass the "awesome" test. Is your rig totally awesome ? Yes, oh yes it is totally awesome! Alright jonathan, the state of CA gives you this badass certificate for an awesome rig... then I wake up .. and realize I have to smog my jeep by saturday.

 

[Bryan C.]

This is great news!!! but I still think its all ass backwards. Isnt reducing pollution and making air quality better the whole reason behind the smog check? If so then the sniffer test should be the ONLY test that needs to be done, no visual and all that. I mean the tailpipe is where all the bad stuff comes out into the air. :dunno:

No, the tailpipe isn't where "all" the bad stuff comes from, most of it yes but not all. There is a significant amout of pollution in the crankcase blowby, also the evaporative emissions from the fuel tank. All this needs to be accounted for to help clean up the air we all breath.


I'm not sure if you remember the 70's and every car you walked by smelled like gas and the exhaust made your eyes water. What about leaded gas and its negative effects on the evironment and the people who live near the freeways? We have come a long way from there, and it is for the best.

As for the new test, I think it is a great idea. I can't remember the last time I had a 2000+ vehicle of any kind fail for high exhaust emissions. The OBDII system is capable of testing the operation of the engine sensors, cat converter, and oxygen sensors on just about every drive cycle. The 05+ cars can detect a misfire at just about any engine RPM too. If there are no codes and nothing is missing or modified then the emissions are most likely within the normal range.

I know I am the minority opinion here, but I support the smog check program and its efforts for cleaner air.

 

[Hoooper]

As for the new test, I think it is a great idea. I can't remember the last time I had a 2000+ vehicle of any kind fail for high exhaust emissions.

I have, and it passed the OBD and visual tests...

 

[srmitchell]

No, the tailpipe isn't where "all" the bad stuff comes from, most of it yes but not all. There is a significant amout of pollution in the crankcase blowby, also the evaporative emissions from the fuel tank. All this needs to be accounted for to help clean up the air we all breath.


I'm not sure if you remember the 70's and every car you walked by smelled like gas and the exhaust made your eyes water. What about leaded gas and its negative effects on the evironment and the people who live near the freeways? We have come a long way from there, and it is for the best.

As for the new test, I think it is a great idea. I can't remember the last time I had a 2000+ vehicle of any kind fail for high exhaust emissions. The OBDII system is capable of testing the operation of the engine sensors, cat converter, and oxygen sensors on just about every drive cycle. The 05+ cars can detect a misfire at just about any engine RPM too. If there are no codes and nothing is missing or modified then the emissions are most likely within the normal range.

I know I am the minority opinion here, but I support the smog check program and its efforts for cleaner air.

I am with you man. We don't smog up here in Humboldt, only for transfer of title. There are so many awful POS cars running around here with clear engine problems... and they don't get fixed because people don't get tested regularly.

If that occurred in the bay area it'd be horrible for air quality. Luckily we have the ocean, forests and very very low population considering the size of our area.