Stuttering under load

[Sickness]

Hi,

Have a 2006 mk5 gti with 95k on the clock.
The car suffers from stuttering under heavy acceleration in all gears when in a low rev range, read lots on it on various forums but never seems to be a solution. So far ive changed the DV to the GFB one and changed the spark plugs with one plug covered heavily in soot. Changing plugs didnt make a difference but what would cause sooting on one plug, bad injector?



Andy

[Human Joist]

Have you had it fault coded to see if there is anything logged

[Sickness]

a friend who's a mechanic ran it through VAG com but no errors showed up.

[bacillus]

Is your car mapped or stock?

[burger187]

is it a DSG?

[56OctyVRS]

Have you changed your fuel filter recently and cam follower?

[GrayMK5GTI]

My old GTI used to stutter under load. No fault codes either, I never fixed it but I think the LPFP was failing

[john87]

Coil Packs!   

Stuttering under load is a telltale sign of ignition problems, most often caused by (common fault) failing coil packs and/or dirty spark plugs. Change 'em out.

[xonk]

I didn't have the same issue as you but there was a recall from VW about coil packs from a certain year, mine is a 05 and got them done free of charge when i went in for my last service so there may be issues with these older ones!

[Sickness]

its a manual and stock, forgot to say i did have the cam follower done but it made no difference. Not done the fuel filter, Ill try the coil packs and see if it makes a difference.
Ill give VW a call and see if it came in as part of any recalls.

[LiamGTi]

First things I'd be looking at are,

Change Spark Plugs,
Change Fuel Filter,

If it persists then change Coils.

I had the same with my Bocanegra, new Sparks sorted it straight away.