150 bhp diesel hesitation

[steve.pocock]

Sorry -posted this query in the wrong bit........

Any ideas on this one?
 
My 2006 1.9 Tid 150 bhp saloon hesitates every so often, most usually at around 2750rpm. I only use BP normal diesel, and have had the following done recenlty:-
EGR valve
cambelt
water pump
no. 3 injector wiring connector replaced and others  cable tied in place
swirl flaps linkage repaired and working
Oil and air and fuel filters

Only done 63k miles

Is used on good long runs regualrly (did 230 miles today) and revved well every week to keep emission systems clear

rarely happens when cruising in 6th gear on motorways

Is it worth buying a £15 diagnostic thingy from Ebay?

[Max Headroom]

Could be mucky fuel - or possibly water in the fuel.

It might be worth having a look at the fuel filter particularly if it has ever been allowed to run low.

Have you used the swirl-flap repair kit on your manifold Steve?

[steve.pocock]

Has had a new fuel filter 6 months ago.

The swirl flap mechanism was repaired by local garage and remains fine.

I'm thinking that there may be another faulty injector wiring connector which is faulty, but that's nothing more than an idea.