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Mini Problem: Pre-Ignition?
https://www.ausmini.com/forums/viewtopic.php?f=2&t=26651
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Author:  TigerWolf [ Thu Jan 11, 2007 12:05 pm ]
Post subject:  Mini Problem: Pre-Ignition?

Hey guys, having a little problem with my mini. Sometimes when I turn it off, the engine just keeps on going. Sometimes this happens for a short time and stops and other times it goes on for a long time before stopping. My dad told me it might be called pre-iginition. We have changed the spark plugs as we thought this may have been the cause (and they needed a change).

Any help on fixing this?

Another thing, I think I may have a bit too much oil in my engine. Is this a big problem at all? What is a good mini oil engine pressure?

Author:  Wombat [ Thu Jan 11, 2007 12:11 pm ]
Post subject: 

You may have to lift the head and give it a de-coke. If its a bit oily and you only do short runs it will coke up a bit - you may get away with a coupl of good long steady highway runs to burn it out

Author:  awbeattie381 [ Thu Jan 11, 2007 12:17 pm ]
Post subject: 

we all quickly learn how to pop the clutch at the critical moment. :D you will probably get used to it too. :lol:

Author:  WasabiPimpNinja [ Thu Jan 11, 2007 2:44 pm ]
Post subject: 

I had this issue in my old 1100... Turns out it was a combination of two things.
1) Timing too far advanced
2) After long runs the lobes in the chamber of the head would heat up and act as a glow plug and given the excessive amount of carburettion I was running and the richness of the mixture it would keep on running....

This was my first Mini and I had no idea about tuning cars ;)

So check the timing, if it's ok, learn how to pop that clutch or how to take the head off and die grind the lobes :twisted:

Author:  boho [ Thu Jan 11, 2007 2:56 pm ]
Post subject: 

'Run on' is often caused by a too rich or too lean carby. :wink:

I have the same problem too sometimes - usually a warning that my oil is getting low. :)

Author:  gafmo [ Thu Jan 11, 2007 5:12 pm ]
Post subject: 

I also have the same problem but I have been told its due to hight compression :wink: have to find out what it is one day

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