Hi,

First post on this forum, so please be nice!

My other half has just recently bought a 53 plate ST170, which seems in really good nick considering age etc, however I noticed that when it comes under heavy acceleration (only tried 2nd/3rd gear, was only round the block) it suffers from a "judder" - but not like clutch judder, it seemed to almost be a misfire but not sounding like one?

It runs fine under normal acceleration, only when booting it

Quick digging around the net seemed to make me think a faulty fuel pump, but wanted to see if anyone on here has more ideas?

Im pretty handy with BMW & Volvo's, but not so much with Ford, so appreciate the help

Cheers