Running like S**T

[raptor_tom22]

Hi all,
This morning my car was running like it was about to run our of fuel. Filled up at shell and when I left intermittently wouldn't rev past around 3500-4000 it was juddering and I must have looked like a descendant of a kangaroo :)
Bit of spec on the car
2005 GTI
DV replaced
PCV replaced with a catch can system
Twintake air intake system
Front mount Twintercooler
Recently replaced the cam follower
around 8000 miles ago the plugs and all 4 coils were replaced
And a regular oil and filter change.
And just to help no warning lights flash up at all during any if it.

Any thoughts or suggestions would be greatly appreciated.

[bacillus]

Just to be clear, did this start happening after you refuelled?

[raptor_tom22]

Yeah but it has happened very occasionally before and then cleared up and wouldn't do it again for ages.
I used shell v power. I could also hear the exhaust popping a bit when I let off the accelerator which it hasn't done before, It's a totally standard exhaust system.
Wasn't sure whether it could be an injector issue?

[56OctyVRS]

Have you changed the fuel filter, as if that's blocked it would cause running issues.  Id also get is scanned to see if its raised any fault codes.

[GrayMK5GTI]

I've got a spare injector from a 2005 GTI. Yours for £15 delivered 

[raptor_tom22]

Thanks for the replies, I've already got a fuel filter but never got round to fitting it so think that will be the first thing to do :)

[rich83]

The catch can... tell us more. Have you emptied it recently?

[raptor_tom22]

Yeah it was emptied couple of weeks ago and is no where near the full mark yet