Message text written by INTERNET:firstname.lastname@example.org
>This probably has been covered at some point - if so, apologies in advance
as I missed it......
Recently a Toyota mechanic mentioned to a buddy of mine that at his shop,
they run a tap through the threads to clean them up everytime they change a
spark plug on a car, especially those with Al engine pieces.
That seemed like a good idea to me, especially since I've occasionally seen
a plug not thread back in as easily as it should during the lifetime of
My questions - is there a down side to doing this (i.e. forcing a small bit
of gunk/metal into the cylinder)? <
Down side? Yes I would think so! If you start the tap wrong you'll remove
all the thread! I'd only do it when absolutely necessary. And always use