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Discussion Starter #1
Hi all, my partner has a mini one, 2010, 1.6 about 80k miles on the clock.
It seems to be making quite a knocking/tapping noise from the engine.
What is this most likely to be?
If it is the chain, is this an engine out job?
Any common faults ?
 

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Bugger
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25,330 Posts
99% is the chain tensioner, its an hours job to change to it over max. All you should need is the tensioner its £50 from BMW. If its something else I would still start here as it rules out most things in one hit.
 

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Discussion Starter #3
Hi, is this the chain tensioner at the top of the engine? do you have a part number?
could I do it myself or need a garage ?
 

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Bugger
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Its down the back of the block, its near the oil filter housing, its a wheel off job but thats it. You need a wobble bar for it and a 3/8th drive socket. I've done it on the driveway but somewhere like Lohen since your local to them would make short work of it, there also a mini specialist so would be best placed to help with any other issues.
 

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Discussion Starter #5
OK, would the chain need to be replaced at the same time? or you think this should be enough?

how much approx would it cost?

cheers
 

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Bugger
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Depends, its why you do the tensioner 1st, 99% of the time it solves the issue. I'd think Lohen would charge you an hour which is fair. Id say your paying £120 for it to be done.
 

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Hey lordf I know this is a old post but I have just had a similar knocking from what sounds to be that side, I have changed the tensioner and also changed the oil and filter as a precaution, started up and all was good but after 5 minutes of driving it comes back, I park it back on the drive and turn off, switch back on and the noise is there for a moment then gone again, has anyone else had this issue please.
 

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I know this is an old post but I'd like to throw in a possible solution to a Mini engine knock. So after my 2013 Mini Clubman S started knocking last year and two shops quotes me upwards of $6,000 to fix it, my husband decided to take a peek to see if he can figure it out since I was convinced that it was not the engine that was actually causing the noise.

Long story long, after taking the engine apart and inspecting both chains, finding nothing wrong with it, he noticed the serpentine belt was all chewed up and the friction wheel had some plastic pieces broken off of it. He removed it and started the car for a brief moment to see if that was it. Lo and behold it did not make the noise. So he ordered a new belt and wheel and saved us thousands of dollars.

I just wanted to share my case here hoping to help someone else in my situation. We spent hours researching a possible solution and almost bought a new engine for my Mini when at the end the issue was resolved by $200 worth of parts.
 

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Hey lordf I know this is a old post but I have just had a similar knocking from what sounds to be that side, I have changed the tensioner and also changed the oil and filter as a precaution, started up and all was good but after 5 minutes of driving it comes back, I park it back on the drive and turn off, switch back on and the noise is there for a moment then gone again, has anyone else had this issue please.
Sorry for the late update, only just got round to looking at the mini, after 2 garages saying it sounded like bottom end and may require a new engine I left it for the time being and bought another car to run around in. I finally took the plunge today and set the car up on stands, removed the wheel and inner arch cover, as soon as I looked at the belt it looked in poor condition with cracks, however there was also a 20mm section with no rubber at all, this must have been causing the tensioner to knock.Removed the belt and checked all the pulleys, all clear of rubber and not play, fitted a new belt, started the car for 30 secs to settle the belt then checked tension and alignment to the pulleys. All ok, refitted everything back on and idled the car for 5 mins with no knocking, run the car around the block with no noise then went a little further around the town and down the dual carriageway, all seemed good. Wife has taken the car to work this evening and she mentioned that there was no noise, fingers crossed this has corrected the issue. In fairness the noise did sound bottom end but it shows the value of people who know these cars and have experienced these cars, thank you to you all for the advice, it was very much appreciated. Next time I will look at the belt first before the tensioner.
 
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