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General E46 Forum
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Old 03-25-2015, 03:31 AM   #1
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Join Date: Jul 2014
Location: Bulgaria
Posts: 2
My Ride: BMW e46 323ci
bmw e46 Engine ticking noise, m52b25(tu)


so recently my engine (m52b25tu) started making a ticking noise coming from the passenger side,from the middle part to the back side of the engine. The car has 160k km and is running great no power loss or rough idle at low rpm, no check light just this annoying noise. I'm using Castrol 10w40 recently changed, also new spark plugs and pulleys.

Can you determine what is the problem, advice?

Thank you!
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Old 09-09-2015, 07:58 PM   #2
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Join Date: Jan 2015
Location: Oregon City Oregon
Posts: 572
My Ride: 99 328i, 00 Z3 2.8
My 99 328i sounds the same. I changed the oil, replaced idler pulleys, and just checked spark plugs with no change. Could it be an exhaust leak through a gasket? Or is it more likely Vanos related?
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Old 09-09-2015, 08:10 PM   #3
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Join Date: Aug 2014
Location: New York
Posts: 223
My Ride: 330i Sedan
I been dealing with this noise for about a year already, doesn't cause a SES.. and it comes and goes and usually comes after a good ride.

Recently I noticed car would Tick if I had the Oil Full on dipstick. So when the Oil is low below half way car doesn't tick at all.

People says it's the lifters but no worries.
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323ci, bmw, e46, engine, noise

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