I've observed a little film of soot over the boat's stern. I am planning to replace the 3 injectors on my 1989 M25XP universal diesel
, as it's cheaper than a rebuild
. Since I'll have direct access to the combusion chambers, I been considering a decarbonizing process used on Atomic 4 engines
1.pouring 1/4 cup or so of mystery oil
into each chamber.
2. rotate engine
by hand and let it sit for a day
3. repeat once
4. run engine
till expected smoke clears up
Has anyone used Mystery oil
to decarbonize a diesel
? Any concerns or advice. My thought is that after 25 years at 160F, the rings may not be sealing as well.
There's no risk and the downside is smoke on the initial startup.