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BMW 3-Series (E90 E92) Forum
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Cylinder 4 and 5 misfire
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Today, 02:45 PM | #1 |
New Member
5
Rep 18
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Cylinder 4 and 5 misfire
So I just put a new engine the car and some 17ts the only codes I’m getting is from a rough idle and rough under acceleration. The car has a brand new walboro 525 and the lpf and the hpf are reading fine attached are the short term fuel trims which look wrong to me I also will attach a log on spool street. I’m also getting timing corrections in basically all cylinders. https://*********************/graphs/l...2-27-05.41551/
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Today, 06:12 PM | #5 |
Colonel
668
Rep 2,073
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Replacing fi blindly is not the solution. First, the car sits for a while and the spark plugs for each cylinder on that bank are checked.
If the plug smells of gas / running black thats the giveaway. Only then the fi should be replaced w known good. Otherwise issue could be something else,
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335i e92 TPC 19Ts
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Today, 06:14 PM | #6 |
New Member
5
Rep 18
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I replaced them with known good injectors I’m getting a plug socket atm to swap plugs to see if the problem follows. When pulling the coil pack nothing changes. I’ve swapped the coil packs with known good aswell.
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