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BMW 3-Series (E90 E92) Forum
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Ways that turbos fail.
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10-14-2015, 12:15 PM | #1 |
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Ways that turbos fail.
I am curious of all the ways our turbos can fail or give sufficient reason to replace. I know the seals can fail and cause smoking issues, particularly on startup. I also know the wastegates can either fail to close or can rattle (both of which are quite noisy, correct?) I've read of excessive shaft end play and of broken compressor/turbine wheels. What are the symptoms besides terrible noise and no boost? I ask all this because I am working on a 30FF code and someone claimed they had failed turbos with the same symptoms (slow to build, always 2-3 psi below target, regardless if target is 8 or 15) but I have a hard time believing my turbos would be bad yet making no abnormal whines, rattles, or smoking. Both wg actuators hold 20in vacuum indefinitely and the rod moves freely.
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10-14-2015, 01:28 PM | #2 |
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But never smoked .. I got 30ff code and heard the wastegate rattle
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10-14-2015, 05:04 PM | #4 |
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Yes .. only had couple hundred miles before warranty expires. I was not going to take that risk so i got them replaced free of charge
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10-28-2015, 10:35 PM | #6 | |
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10-29-2015, 05:44 AM | #7 |
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High Performance Silicone Vacuum Hose - 10 feet - .1375" ID (3.5mm) - Black https://www.amazon.com/dp/B009PYDR6G..._q2xmwbEC65K7W
It will be enough for all the passenger side lines plus the two behind the oil filter. It isn't really hard, just time consuming and restricted space. |
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10-29-2015, 08:16 AM | #8 | |
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might have a block cat... disconnect your downpipes... and give it a test run. |
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