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Burnt Valve


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#1 Roddy55

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Posted 10 September 2019 - 05:56 PM

Hi,

Think I've got a burnt valve in my 1991 Cooper s. Are there any tutorials or u-tubr videos  out there to enable me to tackle this myself. Thanks in anticipation.



#2 croc7

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Posted 10 September 2019 - 08:47 PM

You didn't say why you think that you have a burnt valve.  Do a compression check to isolate which cylinder is suspect.  Then do a leakdown check to determine if the problem is the intake valve, exhaust valve or rings.  An air leak at the carb would be intake valve, hearing a hiss at the exhaust pipe would be an exhaust valve problem and an air leak at the oil dipstick would point to rings.



#3 Daz1968

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Posted 15 September 2019 - 10:54 PM

If you do have a burnt valve make sure you find out the cause of it to prevent getting same again, I had a burnt exhaust valve caused by incorrect advance curve in distributor

#4 DeadSquare

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Posted 16 September 2019 - 05:53 AM

Hi,

Think I've got a burnt valve in my 1991 Cooper s. Are there any tutorials or u-tubr videos  out there to enable me to tackle this myself. Thanks in anticipation.

 

 

Type    "BMC Classic Mini Workshop manual"  into ebay................They are usually about £15/£20, or there will be lots of Haynes ones.

 

If you are young, you can probably find the Pdfile of the 1990's manual on line.

 

Changing a valve is something that you can do your self with fairly simple tools, by which I mean spanners and a feeler gauge etc:, not a hammer and pliers.


Edited by DeadSquare, 16 September 2019 - 05:55 AM.





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