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Newbie with a whining crank pulley

3500 Views 8 Replies 2 Participants Last post by  mike1967, 
F
Hi Guys,
This is my first post here. Looks like a great community!
I have a 2009 Clubman JCW R55.
I've been hearing a whining noise the past 1.5 years and I finally have a couple of weeks to figure out the problem.
I initially thought it was the friction pulley. The one that works off the crankshaft pulley and engages the water pump. Well if you disengage the friction pully with the pull strap, start the car and push the pulley a little to the left it doesn't hit the crank therefore doesn't spin. The sound is still audible in this case. Unfortunate!

The free spinning of the belt tensioner seemed to be ok.
Those were ruled out. My water pump and A/C compressor are new so I highly that would be the issue.
So I took the belt completely off and started the car. The only thing running was the crank pulley. Low and behold the whining sound is still there. So it's the crankshaft pully!
But I thought the crankshaft pully has no bearings to run off it. Would it be the seal? Something internal?
Any ideas on this one would be appreciated.

Thanks in advance!
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M
yep its oil pump fairly common on car with long service times in the past and ie ever run low on oil common,
link below for lci later type ie ecu controlled
www.ebay.co.uk

Genuine Engine Oil Pump for Mini R55 R56 R57 LCI R58 R59 R60 R61 1.6 N16 & N18 | eBay

Genuine Mini Engine Oil Pump suitable for the following: Mini R55 Clubman - One, Cooper, Cooper S & JCW models (N16 & N18 engines only) Mini R56 Hatchback - One, Cooper, Cooper S & JCW models (N16 & N18 engines only) Mini R57 Convertible - One, Cooper, Cooper S & JCW models (N16 & N18 engines...
www.ebay.co.uk
below link for early non lci non ecu controlled.
www.ebay.co.uk

Genuine Engine Oil Pump for Mini R55 R56 R57 R58 R59 One, Cooper, Cooper S & JCW | eBay

Find many great new & used options and get the best deals for Genuine Engine Oil Pump for Mini R55 R56 R57 R58 R59 One, Cooper, Cooper S & JCW at the best online prices at eBay! Free delivery for many products.
www.ebay.co.uk
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F
mike1967 said:
yep its oil pump fairly common on car with long service times in the past and ie ever run low on oil common,
link below for lci later type ie ecu controlled
www.ebay.co.uk

Genuine Engine Oil Pump for Mini R55 R56 R57 LCI R58 R59 R60 R61 1.6 N16 & N18 | eBay

Genuine Mini Engine Oil Pump suitable for the following: Mini R55 Clubman - One, Cooper, Cooper S & JCW models (N16 & N18 engines only) Mini R56 Hatchback - One, Cooper, Cooper S & JCW models (N16 & N18 engines only) Mini R57 Convertible - One, Cooper, Cooper S & JCW models (N16 & N18 engines...
www.ebay.co.uk
below link for early non lci non ecu controlled.
www.ebay.co.uk

Genuine Engine Oil Pump for Mini R55 R56 R57 R58 R59 One, Cooper, Cooper S & JCW | eBay

Find many great new & used options and get the best deals for Genuine Engine Oil Pump for Mini R55 R56 R57 R58 R59 One, Cooper, Cooper S & JCW at the best online prices at eBay! Free delivery for many products.
www.ebay.co.uk
Click to expand...

So it's the oil pump making this noise? Is there a bearing in this? Thats what I'm hearing?
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M
below pics of a under 60k oil pump off a pre lci oil pump as a lot of moving parts and bearings and two rotor that mesh very important the oil level is kept on max mark

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M
i would first try seafoam the oil round for a 50 mile run see if its dirt in pressure valve if lucky
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M
might also be the chain and sprockets that drive it they tend to do 100k at best its a when change timing chain at around 60.000 miles a bit more on N18 engines oil pump chain a must do job
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F
I'll try the seafood first.
So you're suggesting to replace the pump sprocket and chain. Would you replace the drive sprocket for the chain as well or is the pump sprocket only sufficient? Also how difficult is removing the chain? Thanks for all your wisdom in this!
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M
i'm saying more likely the oil pump its self is worn chances are it that ,, here's the dilemma the oil pump chain can only be removed if timing chain and sprocket for it are removed at same time i know clever design until it goes wrong,, its possible to remove the oil pump without removing the chain that would be my first job drop sump and check the chain for wear then undo the 3 torx bolts that hold the pump to bottom of engine and rotate it by hand it should be smooth very small amount of drag,, if pump is at fault it will be near impossible to rotate by hand or will have movement in the input shaft maybe, could even rest a electric drill on ot to make spin it should have next to no noise
its not seafood it seafoam link below for idea
https://www.ebay.co.uk/itm/Sea-Foam...013778?hash=item1ce0778612:g:mw8AAOSwsyhdBcPw
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M
would also add when do seafoam treatment and change oil and filter after use fully synthetic oil and a good brand filter Mann or Bosch or better still genuine one
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