My 1986 Accord (225000 miles) failed the WA state emission test. Results shown below. High CO at cruise, but passes on everything else. I checked the last 3 tests (testing is every 2 years) and on each of these I have just squeeked by on the CO. I remember years earlier that the CO was zero at cruise, but now it's more than double the allowable. HC (PPM) CO (%) CO+CO2 (%) O2 (%) RPM 2525 Limit: 160 1.20 > 6 N/A N/A 2525 Emissions: 120 2.99 16.39 0.0 N/A 2525 Result: PASS FAIL N/A N/A N/A Idle Limit: 220 1.20 > 6 N/A N/A Idle Emissions: 64 0.00 14.80 0.7 1080 Idle Result: PASS PASS N/A N/A N/A Any ideas on what could be amuck, or should I just pay the 0 for a waiver? Thanks, John