Noisey rattling top end grey smoke - MINI Cooper Forum

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post #1 of 20 (permalink) Old Feb 11th, 2017, 07:57 PM Thread Starter
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Noisey rattling top end grey smoke

Hi all.

My mini still isn't 100%. When starting from cold it now seems noisey on the top end oil level is fine. Also with this come grayish white smoke after a while this all clears noise and smoke

so today I replaced the timing chain tensioner and oil flush and new oil again.

This time I changed the oil to 5w 40 before it had 5w 30. I ran the car and all soundwe ok.
But as the car was warm this was not really a good test. I've just been outside started the car and sure enough that rattle was back but with a review of the engine dissappeard.

I still have the smoke but not as bad as it was before.

Any ideas. I took a picture of the smoke before the oil change.





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post #2 of 20 (permalink) Old Feb 11th, 2017, 08:41 PM Thread Starter
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Uplate on this and more info just took of for a drive to pick.my daughter up around 10 mins trip when it's cold I also get a ransome squeal is the best I can describe it. Came back and smoke was gone again. But on the way it was there also car seems hesitant till its warmed up I also pulled the plugs earlier but could not see anything unusuall could it be a faultyear plug at lower temp.

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post #3 of 20 (permalink) Old Feb 12th, 2017, 08:53 AM
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Is she throwing any codes??

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post #4 of 20 (permalink) Old Feb 12th, 2017, 09:47 AM Thread Starter
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No codes read with impa it was clear
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post #5 of 20 (permalink) Old Feb 12th, 2017, 09:54 AM
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That steam is normal for a cold start condensation in the exhaust.

my r50 has a rattle when cold and it has for the past 3 years and 20k.

i would pull the rocker cover and inspect everything especially the chain guide rails..

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post #6 of 20 (permalink) Old Feb 12th, 2017, 01:10 PM Thread Starter
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Did pull rocker yesterday. Checked all bolts etc. Nothing unusual perhaps I'm worried about nothing. Will try change the plugs and see what happens.
It could be worn bottom end I've already replaced the head si centre having good the car xmas .
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post #7 of 20 (permalink) Old Feb 13th, 2017, 09:50 AM
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Could be the little hydraulic pedestals are leaking down when left to get cold.

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post #8 of 20 (permalink) Old Feb 13th, 2017, 10:13 AM Thread Starter
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Rattling has gone nowell since using the 40w oil. But still have flat spot when it's cold and the smoke. Like the engine is bogged down. Will put foot down and it won't go.

Till its all warm am going to try new plugs.
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post #9 of 20 (permalink) Old Feb 13th, 2017, 10:26 AM
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Quote:
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Rattling has gone nowell since using the 40w oil. But still have flat spot when it's cold and the smoke. Like the engine is bogged down. Will put foot down and it won't go.

Till its all warm am going to try new plugs.
It's steam not smoke.
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post #10 of 20 (permalink) Old Feb 13th, 2017, 07:07 PM Thread Starter
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Video of the smoke


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post #11 of 20 (permalink) Old Feb 14th, 2017, 07:32 AM
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Video of the smoke
That is smoke. Obviously burning oil. Broken piston ring? What's the cranking compression like?
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post #12 of 20 (permalink) Old Feb 15th, 2017, 07:04 AM Thread Starter
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About to test today. But yesterday bight oil light flicked on so stopped waited and then drove last mile home with no light and parked up.
Only bought the car xmas eve since then used it about 2 weeks in total as first I had a cracked head.
My feeling is the engine has been cooked in a previous owner thing is do I throw more money at this engine or cut my loss and look for another bottom end.
Thissue precise moment in time I'm really going of minis wish I'd stuck with my classic athe least that was only rust I had to chase
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post #13 of 20 (permalink) Old Feb 15th, 2017, 07:19 AM
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Quote:
Originally Posted by Sasquatchuk View Post
About to test today. But yesterday bight oil light flicked on so stopped waited and then drove last mile home with no light and parked up.
Only bought the car xmas eve since then used it about 2 weeks in total as first I had a cracked head.
My feeling is the engine has been cooked in a previous owner thing is do I throw more money at this engine or cut my loss and look for another bottom end.
Thissue precise moment in time I'm really going of minis wish I'd stuck with my classic athe least that was only rust I had to chase
If it's been cooked at some point. i'd go with the "another bottom end" as other components my be affected.
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post #14 of 20 (permalink) Old Feb 15th, 2017, 08:15 AM
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Quote:
Originally Posted by Sasquatchuk View Post
About to test today. But yesterday bight oil light flicked on so stopped waited and then drove last mile home with no light and parked up.
Only bought the car xmas eve since then used it about 2 weeks in total as first I had a cracked head.
My feeling is the engine has been cooked in a previous owner thing is do I throw more money at this engine or cut my loss and look for another bottom end.
Thissue precise moment in time I'm really going of minis wish I'd stuck with my classic athe least that was only rust I had to chase
FFS you really are having a hard time of it buddy. It sounds like your car has had a life of hell in with it's former keeper.
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post #15 of 20 (permalink) Old Feb 15th, 2017, 09:22 AM
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If you really like the car and have the time and money, consider a rebuild of the engine. That way, you will know its condition. Modmini dropped a valve in his R53 on a racetrack and blew the engine and did a rebuild from a short block from memory. His video of the rebuild is over several youtube uploads but interesting to watch and informative.
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