emission problem
Hello Honda prelude experts,
I urgently need someone's help/suggestion to fix the emission problem that I'm experiencing with my Honda Prelude 1998 (SH). I went for the emission test and it didn't pass!!!! First test result looks like: ================ HC ppm - PASS CO % - PASS NO ppm - FAIL Reading 780 (Limit 450) GAS Cap - PASS All others - PASS Second test result:(little improvement in `NO ppm`) ============= I replaced with new PVC valve and went for second test. HC ppm - PASS CO % - PASS NO ppm - FAIL Reading 766 (Limit 450) GAS Cap - PASS All others - PASS Third attempt(got worst in `NO ppm`) ============ Before I went for the test, I did following to the car: - flushed the engine and changed engine oil - Replaced the distributer cap, plate and wire - Replace the spark plugs - Cleaned the EGR valve with Honda Carburetor/Combustion chamber cleaner( (I test for leak by sucking the air - valve seems to have no leak) - Used the octane booster before I fill the tank - Sprayed the Honda Carburetor/Combustion chamber cleaner into the air intake hose and drove about 20 km to the `emission test center`. What happened ? It FAILED badly. Result looks like : HC ppm - PASS CO % - PASS NO ppm - FAIL Reading 809 (Limit 450) GAS Cap - PASS All other are - PASS Please help. |
Do you have a check engine light?
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catalytic converters help break apart NO and O2 molecules, and reduce NO emissions
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