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Added April 30, 2021 by alanp.1991
ok so soon after warm up stft slowing starting going positive eventually ltft went positive and then stft started going back to 0 so everything is reading the same even with a new MAF sensor so now we know the sensor was working correctly. if we look at the cruise log its pretty interesting. During idle the ltft were at 30-35% but as soon as I started driving the ltft started to go back down and when I let off they would climb back up. The guy in the video made a really clear explanation of this how this points clear to a vaccum leak. makes me wonder if the leak is small that the smoke test didn't find it. but as the fuel trim level suggest its there, if you go back to part 1 of the video and skip to 22 min. my engine is doing exactly what he's saying.
ok so soon after warm up stft slowing starting going positive eventually ltft went positive and then stft started going back to 0 so everything is reading the same even with a new MAF sensor so now we know the sensor was working correctly. if we look at the cruise log its pretty interesting. During idle the ltft were at 30-35% but as soon as I started driving the ltft started to go back down and when I let off they would climb back up. The guy in the video made a really clear explanation of this how this points clear to a vaccum leak. makes me wonder if the leak is small that the smoke test didn't find it. but as the fuel trim level suggest its there, if you go back to part 1 of the video and skip to 22 min. my engine is doing exactly what he's saying.
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