09-13-2024, 11:25 PM
Those reed valves are Honda’s PAIR system—Pulse Secondary Air Injection
To paraphrase from the service manual— pulse secondary air supply system introduces filtered air into the exhaust gases and changes a considerable amount of hydrocarbons and CO to C02 and water.
The fresh air promotes burning of unburned exhaust gases to do the above.
The reed valve prevents reverse air flow through the system. The PAIR control valve is operated by the solenoid valve which is controlled by the PGM-FI unit. The valve is opened/closed depending on the running condition.
The book has a very nice diagram of how everything flows. If you need it, PM me with you email and I will send it to you. We cannot post copyrighted material on the board.
I would first check that all the hoses are correct and the PAIR control solenoid valve is electrical connection is plugged in.
I’ve never had the reeds apart but the book pics look like they really can’t be installed wrong. I may be wrong through. Here is a link to an exploded view https://www.partsfish.com/oemparts/a/hon...head-cover
To paraphrase from the service manual— pulse secondary air supply system introduces filtered air into the exhaust gases and changes a considerable amount of hydrocarbons and CO to C02 and water.
The fresh air promotes burning of unburned exhaust gases to do the above.
The reed valve prevents reverse air flow through the system. The PAIR control valve is operated by the solenoid valve which is controlled by the PGM-FI unit. The valve is opened/closed depending on the running condition.
The book has a very nice diagram of how everything flows. If you need it, PM me with you email and I will send it to you. We cannot post copyrighted material on the board.
I would first check that all the hoses are correct and the PAIR control solenoid valve is electrical connection is plugged in.
I’ve never had the reeds apart but the book pics look like they really can’t be installed wrong. I may be wrong through. Here is a link to an exploded view https://www.partsfish.com/oemparts/a/hon...head-cover