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Old 11-17-2012, 02:34 PM   #1 (permalink)
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Default 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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Old 11-17-2012, 03:08 PM   #2 (permalink)
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List your mods? Monitoring devices?
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Old 11-17-2012, 04:10 PM   #3 (permalink)
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Just a CAI and a blow off valveSystem too lean at idle, help-imageuploadedbyautoguide1353186594.719022.jpg


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Old 11-17-2012, 04:19 PM   #4 (permalink)
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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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Old 11-17-2012, 07:06 PM   #5 (permalink)
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Nop, no way of monitoring them


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Old 11-17-2012, 07:09 PM   #6 (permalink)
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Is a BOV


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Old 11-17-2012, 08:52 PM   #7 (permalink)
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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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Old 11-17-2012, 09:39 PM   #8 (permalink)
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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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Old 11-17-2012, 11:04 PM   #9 (permalink)
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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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Old 11-17-2012, 11:04 PM   #10 (permalink)
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I'll definitely replace the BOV


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