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Smoking
https://www.ausmini.com/forums/viewtopic.php?f=2&t=22137		 Page 1 of 1
Author:  Drekkus [ Sat Sep 02, 2006 6:49 pm ]
Post subject:  Smoking
My mini is blowing a fair bit of smoke, especailly on startup and when you rev it a bit.The plugs are tending to foul with oil so I'm assuming its an oil burning smoke. Compression is between 170 & 185 over the 4 cylinders.
Am I more likely to be looking at a problem with the rings or with the head ?
Author:  drmini in aust [ Sat Sep 02, 2006 7:00 pm ]
Post subject: 
Could be either really.
If only on startup and it goes away, except at bottom of hills- think valve stem seals.
If it does it under load, it's the rings... :cry:

I don't believe in re-ringing Minis- if they are worn out and pumping oil, the bore is worn oval/tapered too. There is so much work stripping and reassembling it, I think it's false economy not to bore & hone it, and fit the next size up pistons and rings.
Good oversize pistons are cheap as chips these days. And a 4 cylinder rebore & hone is $100-$150.
:wink:
Author:  gazza [ Sat Sep 02, 2006 7:42 pm ]
Post subject: 
just dont start it where people are eating...it could cost you a big fine
Author:  Drekkus [ Sat Sep 02, 2006 9:05 pm ]
Post subject: 
drmini in aust wrote:
Could be either really.
If only on startup and it goes away, except at bottom of hills- think valve stem seals.
If it does it under load, it's the rings... :cry:


It doesn't go away entirely, its just particularly bad when first starting and if you give it a bit of a burst.
Valve stem seals were replace a couple of months ago with the Vitron type.I didn't really check the guides and stems for wear at the time. :oops:
All 4 plugs are fouling but number 2 is a bit worse than the others.It does have the lowest compression of the 4 but I didn't think the figures were too bad.
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