So here I am with more questions for the wise ones

My car has been leaking oil like a sieve, over the winter it got really bad before I noticed and it turned out the oil feed pipe had corroded, so I changed that, had problems with the thread on the crankcase because as per usual I over tightened it.. I rescued that and no leaks there at all, only it still has been leaving puddles everywhere.

Today I popped off the cowling to look, suspecting that actually my head needed re-seating. It turns out not, I re-torqued the head anyway, but the leak is actually coming from the oil sensor switch thingy.

My question is can I just tighten that up? Or is there a seal I can buy - or in fact does it need a new sensor unit with seal attached?

(I do wonder if I need a new breather too, and if that might help. Its not that old but I hear they don't last forever.)

Thanks

Well it seems the thing itself is duff. Took it out, cleaned the threads and surfaces, annealed the washer as I didn't have any to hand and replaced it onto the motor, same leak clearly from there. Tightened it up as much as I dared given the alloy block, no change at all.

So I ordered a new one and expect that'll sort it. Quite chuffed, it's been leaking for ages now and I really thought it'd be the head.

Oil sensor get leaky when old, i suspect because of the plastics degrading of the heat or breaking because of the heat changes.

Thanks. Yeah the plastic bit can be wobbled slightly in its housing.

just fit another switch