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Old Aug 10th, 2014, 11:29 AM
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Gen1 cooper s burning oil

Has anybody else had this problem, my cooper s is burning oil and now the engine management light has come on.
It still starts and runs fine and the coolent looks fine because I possibly thought it could be the head gasket, just wondered if anybody had any ideas before I start stripping it down.
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Old Aug 10th, 2014, 12:00 PM
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Are you sure its burning the oil, most leak it?
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Old Aug 10th, 2014, 01:28 PM
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My r55 didn't burn it or leak it. The oil just vanished. Turns out just needed to take the valve cover off and blow compressed air through the pcv valve.
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Old Aug 10th, 2014, 07:27 PM
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Quote: Originally Posted by adavis (original)
My r55 didn't burn it or leak it. The oil just vanished. Turns out just needed to take the valve cover off and blow compressed air through the pcv valve.

R55 have a turbo engine, gen 1 cars are supercharged.
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Old Aug 10th, 2014, 09:52 PM
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Yes it's definitely burning oil it is smoking bad and there is oil in the end of the tail pipes
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Old Aug 11th, 2014, 06:14 AM
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Burning oil is more likely to be valve stem seals (smoke on start up - especially from cold) or piston rings. Could be a blocked breather or broken one way valve.


What error is your management light telling you?
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Old Aug 11th, 2014, 06:45 PM
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It seems to smoke a lot more when warm,could it possibly the head gasket? Haven't checked what fault code it's showing yet, I am going to do a compression test on it as well
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Old Aug 11th, 2014, 07:55 PM
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You get steam from a blown head gasket, but thats water getting in to the piston chambers not oil.
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Old Aug 12th, 2014, 11:34 AM
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It was valve stem seals on mine. once they were changed it didn't drink a drop of oil
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Old Aug 13th, 2014, 09:51 PM
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I have taken out the spark plugs tonight and they are all covered in oil, it is looking like the valve stem seals or has anybody else got any ideas?
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Old Aug 14th, 2014, 11:27 AM
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Which bits have oil on them? The tops or the bottoms? If it's the tops then it's the seals around the tops of the sparkplug tubes. Just take off the rocker cover and replace them.
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Old Aug 14th, 2014, 11:46 AM
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It's around the bottoms of all the plugs, do you know if you can replace the valve stem seals without removing the head?
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Old Aug 14th, 2014, 12:39 PM
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Yes you can. Take out the plugs and remove the rocker cover. You may want to replace valve springs and rockers while you are doing this as if there has been oil starvation it can stress them. Remove the rockers and cam. Get some rope and feed it into the first cylinder making sure not to drop the whole lot in, then manually rotate the crank shaft until that cylinder is at top dead center. The rope will hold the valve in place and allow you to remove the springs for that cylinder without the valve dropping into it. The hardest bit is compressing the new spring back on. Repeat the rope trick for the remaining 3 cylinders. Takes a fair bit of time but saves removing the head.
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Old Aug 15th, 2014, 07:12 AM
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Did you use a special tool to compress the springs?
Thanks for your advise, will hopefully get chance to have a look over the weekend.
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Old Aug 15th, 2014, 08:49 AM
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It was a while back, I borrowed a tool, it was something like this

Sealey VS160 Valve Spring Compressor OHV | Sealey VS160

I assume the air compressor they mention is to keep positive pressure in the cylinder to prevent the valve dropping
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