Hi,
Just said I would post this as info. I've owned my 240 for a few years now and always seemed sluggish.
I tore it down on Sunday and replaced the:
Timing belt and coversSealsWater PumpCoolantTensioner Pulley
However upon taking the old cover off I noticed the timing belt was real loose and was abe to rotate the crankshaft pulley without the other pulleys moving.
Might be worth inspecting your own belts if you notice any changes and readjust the tensioner.
It's running perfectly now and definitely has more grunt now that the timing is correct.
https://www.youtube.com/watch?v=Tasnw8UjE-c
Thanks,
Martin