System too lean at idle, help - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 19 (permalink) Old 11-17-2012, 03:34 PM Thread Starter
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System too lean at idle, help

Hi , I own a mazdaspeed 6 and just last night the check engine light came one , today I check it and it thee this code p2187 , and I was reading that it could be many things , like boost leak , the canister purge valve , any suggestions ? Will greatly appreciated thanks


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post #2 of 19 (permalink) Old 11-17-2012, 04:08 PM
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List your mods? Monitoring devices?

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post #3 of 19 (permalink) Old 11-17-2012, 05:10 PM Thread Starter
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Just a CAI and a blow off valveSystem too lean at idle, help-imageuploadedbyautoguide1353186594.719022.jpg


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post #4 of 19 (permalink) Old 11-17-2012, 05:19 PM
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can't tell for sure in that pic- is that a BOV or a BPV?

If BOV, it's leaking at idle, essentially a big vac leak. Do you have any means of monitoring your fuel trims or AFR's?


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post #5 of 19 (permalink) Old 11-17-2012, 08:06 PM Thread Starter
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Nop, no way of monitoring them


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post #6 of 19 (permalink) Old 11-17-2012, 08:09 PM Thread Starter
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Is a BOV


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post #7 of 19 (permalink) Old 11-17-2012, 09:52 PM
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Remove BOV, replace with proper BPV, and good to go. Or get a tuning device and run BOV
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post #8 of 19 (permalink) Old 11-17-2012, 10:39 PM
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agreed with yeams6.

If you run BOV you are spitting out air the system is counting on to run properly. This can be circumvented with the use a tuning device to tell the system the air is not really there.



Why a BOV? Because race car?

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post #9 of 19 (permalink) Old 11-18-2012, 12:04 AM Thread Starter
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The BOV came with the car when I bought it , so I didn't know much about it , but thanks guys I appreciate all you help


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post #10 of 19 (permalink) Old 11-18-2012, 12:04 AM Thread Starter
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I'll definitely replace the BOV


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