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i have a Mini Cooper S 2004- supercharger, the engine is making a rattling noise at 1st i thought i it was coming from the engine exhaust mainifold as the garage i took into note not BMw, it appeared i was almost out of oil note for some reason the engine oil light did not come on! anyway filled up with oil, next day went to collect the car and started the engine and it sounded great could hear the supercharger and the car sounded great- note car had not been run over night and was cold- it ran up to 30-60 sec still sounded great, the mechanic had not completed the works something unrelated (horn) and so had to continue so i came back anyway car had been running and sounded like a bag of nails again just as before sound like coming from exhaust manifold, the noise is at tick over and is not a whine when the sc cuts in i don't appear to have lost power, but the noise not their when its cold but when the engine warms up but when it warms it sounds like a bag of nails.Help Adam Bult, Bedford, uk
Country: United KingdomMake: BMW- minieModel: Mini Cooper SYear: 2003Engine: 1600 Already Tried: oil change
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Hello and welcome to JustAnswer BMW,My name is XXXXX XXXXX it will be my pleasure to assist you today.
this is commonly the timing chain / chain tensioner on this model. you will likely need a new tensioner and to have the chain checked.
I hope that is helpful, please let me know if you have further questions, or if I can clarify anything for you.
Best of luck with your vehicle.
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thank you in advance.
Steve
Relist: Answer quality.
Relist: Inaccurate answer.
Hello and Welcome to justanswer..As you have re listed your question, I can help you further with this. My name is MIKE...Its certainly true that these engines do suffer premature wear / failure of the timing chain and associated components - I don't know what the mech has told you what he thinks it is - but that is a suspect.The other issue, suspect here is the basic internals of the engine - valve train and so on - because of the lack of oil you mentioned - this could have caused damage - it could also be a failing oil pump ( not unheard of)..and hence you get the "bag of nails" effect due to lack of oil pressure..The garage need to have an oil pressure test kit plumbed onto the engine to physically watch the oil pressure while the engine is running up to temp - if it drops and the noises start - this is a sign of oil pump failure as above and they would have to progress from there then to cure that ...I would discuss these issues with the mech / garage and go from there- Form what you have described - the problem has to be one or the other as above now.
Im very pleased to have helped you - By all means use the reply button to get back to me if you need / wish ...Let me know if I can help anymore...
Meantime >>> Please click the "Accept button" for me Now - Thank You ... Please note , you need to press the Accept button even if you are a subscriber to justanswer - thank you again. Kind Rgds - MIKE
Experience: 34 years of self employed vehicle diagnostic & repair