540i tappet death rattle? - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 11-07-2009, 12:19 AM
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Exclamation 540i tappet death rattle?

just started it this morning and instead of the usual peace and quiet....a loud "tappet" noise from pax side (LHD) rear cylinder head. quietened down after a few mins but still a mechanical noise when i blip it.....

seen some advice to rev it to 3000 for a couple of mins in neutral to fill up the pots of the hyd lifters.... not sure i want to do that. Used to rev my mini to 5000 to straighten bent valves but that was 30 years ago.....

any tips/ how do i tell? bmw dealers are VVV expensive out here.

Harry
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#2 (permalink) Old 11-07-2009, 09:14 AM
OMFG another one!?
 
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witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice
How long since the last oil change?

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#3 (permalink) Old 11-07-2009, 10:43 AM
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only 3000 Km..... i change the oil every 5K and the filter every 10K.....

just changed the oil, flushed with a flushing oil and spent $40 on 7 ltrs of castrol mag... 10w/40.... maybe last oil was 20w/40.... i'll see... when hot/ revved a bit it quietens... can't hear it with the bonnet down.

it's an old engine... and it's worked pretty hard since i bought it.... if needed ,i'm thinking of just changinf the lifters on the "stuck" cylinder.... at $ 40 a piece here X 32 it's a lot!

Harry
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#4 (permalink) Old 11-07-2009, 11:40 AM
OMFG another one!?
 
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That seems like it should work.

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#5 (permalink) Old 11-09-2009, 07:21 AM
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Originally Posted by harryinsaudi View Post
i change the filter every 10K.....
Harry
That's why you have a sticky lifter.

Filters are CHEAP. Changing them is a lot cheaper than fixing a lifter!
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#6 (permalink) Old 11-09-2009, 01:41 PM
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my 540i did the same thing........@ 140,000miles....it turned out to be a fairly common problem with the oil pump bolts shearing off and it not sealing correctly! (dropping the oil pressure) maybe you should check into that? i payed 600$ to have it fixed at a bmw shop! so i'd imagine it's DIYable if thats the case!....hope this helps!
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#7 (permalink) Old 11-12-2009, 09:47 AM
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thanks

yep, i'd heard that the oil pump bolts can work loose on these engines i'll have a look into that. I don't think that leaving the filter in for 10k km is an issue, the oil is always still clean when i change it and i change the filter twice as often as recommended ...... i get 4 oil changes in between the green lights turning to amber.....
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#8 (permalink) Old 11-13-2009, 03:01 AM
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i usually run my filters around 10k also and all three of my past bmw's have ran over 300'000miles. i don't really think theres a science to it but i feel it to be needless money saved if after 5k the oil is still clean!
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