Hi everybody

It's been a while since I've posted here but I've moved in with a friend who owns a Mitsubishi Magna 2003 executive auto.
Over the past few months it has developed a bad hesitation problem when cold and warm when taking off and when driving at local street speeds and occasionally on the highway but very minor to notice at that speed.
It's been looked at by the mechs and they can't work it out its all the usual stuff done fuel system cleaned throttle cleaned injectors cleaner etc.
Hasn't been pulled down to check them properly yet, so I was wondering if anybody might have an idea what it could be before we go down that path.

Cheers,

Nathan.