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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 02-06-2009, 11:52 AM   #1 (permalink)
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Tapping noise

So I just took my 00' e39 540i in to replace a clutch hose, coolant temp sensor, and to get the valve cover gaskets replaced. Once the mech finished up he started the car in front of me. It was fine for the first few minutes but shortly afterwards, a tapping noise was coming from the engine compartment, which was not present before I brought the car in. This was something they noticed earlier that day but, for some reason, didn't tell me about it. When I questioned them, they were uncertain of what the noise was. Now, after they re-did their valve cover job, it's still there. Does anyone have a clue as to what this could be? or how bad it is to drive the car with such a noise.

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Old 02-06-2009, 12:20 PM   #2 (permalink)
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same here with dying tensioner.

runs fine for a bit, then tap tap tap tap tap.
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Old 02-06-2009, 12:24 PM   #3 (permalink)
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same here with dying tensioner.

runs fine for a bit, then tap tap tap tap tap.
so you have the same problem and it's because of a dying timing chain tensioner?
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Old 02-06-2009, 12:26 PM   #4 (permalink)
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If you only use the car for small journeys this is the problem, take it for a good 100 mile round trip, highway if possible, all that happens is the valves get stick over time a good run will clear them, I have to do this once a month after the wife has been doing loads of stop / start trips to the shopping mall etc.
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Old 02-06-2009, 07:51 PM   #5 (permalink)
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timing case covers w/ the v/c/g's or just v/c/g's?
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