New 2006 GS 300 Help
Thread Starter
Driver School Candidate
Joined: Dec 2016
Posts: 45
Likes: 2
From: CA
sea foam sprayed and now trouble codes
i sea foamed my gs the other day and now i’m getting P0305(cylinder 5 misfire)and P0172 (system too rich(bank 1))trouble codes. did i kill my engine? or is this a sea foam known after issue? thanks for any help possible.
Intermediate
Joined: Jan 2018
Posts: 470
Likes: 40
From: NY
Seafoam can dislodge carbon, foul plugs, hold a valve open. I would pull the plug for starters. If the plug looks good take it for an "Italian Tuneup"
Racer
Joined: Mar 2015
Posts: 1,631
Likes: 299
From: TX
Is it running normal at the moment? I would clear the code and see if it comes back.
Thread Starter
Driver School Candidate
Joined: Dec 2016
Posts: 45
Likes: 2
From: CA
Thanks for the help
. Plugs were just replaced a couple of months ago. Strange thing happened today. No auto parts store would clear codes for me. So I ordered my own tool. Since a seafoam rep recommended I clear the codes and drive a while (common issue after using seafoam). After a few stops today the code cleared itself. So I never had an issue. It was all the carbon build up. I had a large cloud following me for a minute. 😋 now my gs is super quiet almost hybrid quiet. 😮 it doesn’t make that hot rod sound anymore when I floor it. However it does move faster more easily now. Btw I did double and triple check that I didn’t mess up wiring or hose connections. I originally thought the check vsc, and traction lights came on cause I did a stand still burnout after the treatment. I went side ways about a foot. 😋 now I just have to replace my faulty door switches and other small plastic parts. 😁 again thanks for all the support from all. 
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