Since many here are so fond of California's BAR Smog Check Program I thought those living there who don't already know of it might be interested in the Low Pressure Fuel Evaporative Test for older vehicles that became mandatory last month. It applies to all model year vehicles 1976-1995 except as noted below.
The test basically involves pressuring the fuel tank and vapor line (up to but not including the evap cannister) with nitrogen through the gas cap and then testing for the tiniest of leaks. Failure of the test results in a fail on the entire emissions test.
The following vehicles are exempt:
1) Model-year 1996 and newer vehicles.
2) 1976-1995 model year vehicles that:
a) Were not originally equipped with a fuel evaporative control system.
b) Are powered exclusively by Compressed Natural Gas (CNG), Liquefied Natural Gas (LNG), or Liquefied Petroleum Gas (LPG).
c) Do not have a fuel fill pipe adapter available for the EVAP tester; or
d) Are equipped with a fuel evaporative system canister and hoses that are not accessible or would require dismantling or lifting the vehicle to gain access for testing.
As with all BAR-97 emissions equipment the machine is tamper proof and communicates the result directly to the DMV. There's a lot more to know about this test and how it's done but 'dems the basics.
Info here: http://tinyurl.com/2h92l8
Let the bitching begin....
The test basically involves pressuring the fuel tank and vapor line (up to but not including the evap cannister) with nitrogen through the gas cap and then testing for the tiniest of leaks. Failure of the test results in a fail on the entire emissions test.
The following vehicles are exempt:
1) Model-year 1996 and newer vehicles.
2) 1976-1995 model year vehicles that:
a) Were not originally equipped with a fuel evaporative control system.
b) Are powered exclusively by Compressed Natural Gas (CNG), Liquefied Natural Gas (LNG), or Liquefied Petroleum Gas (LPG).
c) Do not have a fuel fill pipe adapter available for the EVAP tester; or
d) Are equipped with a fuel evaporative system canister and hoses that are not accessible or would require dismantling or lifting the vehicle to gain access for testing.
As with all BAR-97 emissions equipment the machine is tamper proof and communicates the result directly to the DMV. There's a lot more to know about this test and how it's done but 'dems the basics.
Info here: http://tinyurl.com/2h92l8
Let the bitching begin....