Hi,
I discovered today a small leak on my coolant level sensor. I assumed a
bad O-ring and stupidly I wanted to tight it down a bit further until
tomorrow to get  new sensor. Well surely another 1/16 of a turn and the
plastic broke and I had to get home via public transport. Now I will get
this part tomorrow (hopefully they have it in stock at VM Authaus in
Vancouver / Burnaby ... a really great place to get reasonably prized
parts the next day by the way .... and a really nice guy .... no I am
not at all involved with this mechanics, its just a good place to get
things fast).
Now I thing when I changed the expansions tank a few months ago it is
very likely, I might have tight the sensor a bit too much so that it
slowly cracked and not the O-ring but an already broken plastic was the
leaking problem in first place. My wrench did the rest then hehe. I
know, next time I should inspect first before tighten it more.
Is there a rule of thumb how to tight down these plastic sensors? How
many (fraction of) turns after it is hand tight? As I have to use a 32mm
socket it is quite easy to over torque it without even knowing ...
Thanks
Thomas