Emissions - Proper Testing Procedures
88subaru08NUMBER 11-32-88
DATE 11-01-88
ALL 1981 AND LATER SUBARU VEHICLES
SUBJECT: PROPER EMISSION TESTING PROCEDURES
It is imperative that the engine and exhaust systems are up to normal operating temperature before performing an approved EPA performance warranty short test in an authorized state and/or local Vehicle Inspection/Maintenance (I/M) Program.
Testing of exhaust emissions at other than normal operating temperature may yield inaccurate results.
To ensure proper test conditions, the engine must be operated at an idle speed of 2500 +/- 300 rpm for up to 30 seconds.
This test procedure complies with applicable EPA regulations dealing with approved short tests.
For further information concerning applicable state or local emission regulations, we suggest that you contact your State's Division of Motor vehicles.