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High fuel trims at idle + black smoke
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Topic: High fuel trims at idle + black smoke (Read 2080 times)
ibizaCUPRA18t
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Posts: 153
High fuel trims at idle + black smoke
« on: July 17, 2018, 03:58:38 PM »
Just did a wideband conversion added cores for wideband and all wiring is now ok - no fault codes related to lambda. Voltage tests ok. But after warmup fuel trims reach 20% and idle is very unstable with black smoke. Tried resetting but same happens after 3 minutes. Tried playing with KRKTE but same results. Lambda reads 1.005 - 1.000 most times and voltage is steady at 1.560v - these values should move a lot more? Bad sensor could it be?
What should I look for in logs other than idle trims, injector times, or something else? Thanks.
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purepower
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Posts: 22
Re: High fuel trims at idle + black smoke
« Reply #1 on: July 21, 2018, 03:21:05 AM »
Try to have a look on injection times, MAF reading and Rail pressure.
It seems like injection angles are wrong.
But I can be wrong as well.
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PurePowerPerformance
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