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Oil leak and high fuel consumption Oil leak and high fuel consumption
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  #21  
Old 08-21-2023, 02:29 PM
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One bank of 3-4% richer than the other but other than that it seem fine. Its possible that O2 readings sometimes stays high I don't remember last time I checked.
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  #22  
Old 08-21-2023, 02:34 PM
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O2 sensor oscillating voltages should be similar on each bank. Is the MAF reading steady?
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  #23  
Old 08-21-2023, 02:54 PM
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I will check when I can
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  #24  
Old 08-22-2023, 08:15 AM
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But is it really possible that a defective secondary air system cause such a high fuel consumption?
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  #25  
Old 09-14-2023, 01:37 PM
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Any update on this Supr4?
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  #26  
Old 09-14-2023, 01:49 PM
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I'm gonna change the valve next weekend. I changed the spark plugs and some were not torqued I didn't checked if it still leak.
Changed the new Bosch maf With the old one and Ltft lowered by 7%
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