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Old 02-27-2010, 06:40 PM   #5
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Join Date: Oct 2003
Location: los angeles
Posts: 52
My Ride: 325i
Originally Posted by xi_ter View Post

To clear this carbon, pour Seafoam into the hose from secondary air pump to the valve and engine port before the cold engine is started in the morning.
Thanks xi_ter. The Seafoam did the trick. I've been troubleshooting P1418 SES code for over a year, literally replacing almost every component of the secondary air system, and the Seafoam cleared it in seconds. Many thanks.

Last edited by refimail; 02-27-2010 at 07:03 PM.
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