Mini Cooper n12 bent valves plus dropped valve seat part 1

[@trollmanrs]

Is the fix still ok, as my machine shop won't reseat the valve seat as they are prone to dropping again?

[@mickeymini9522]

The n12 and n16 variants seem to drop inlet valve seats, rebuilt my partners Cooper this summer after one of the inlet valve seats from cylinder 4 dropped out. Did some serious damage, required new pistons as well as a head repair. Replacing piston rings sorted out the oil consumption issue associated with these engines, went from 800 miles per litre to zero. Now for readers, if your n12/16, possibly n18 is misfire when hot at idle and if you disconnect a cam sensor the misfire stops - you have a faulty inlet valve seat. Stop using it and have it repaired - you will need to find someone who is prepared to take the head off.

[@kieferste]

Good advice mate thank you for watching and appreciate the comment 👍 😀

[@wcisean]

So how did you fix the dropped valve seat? I have same issue right now?

[@kieferste]

The machine shop repairs it for me it's a common issue with these

[@wcisean]

@@kieferste thanks that is what I thought