Hi guys.
I have GP 1.3 JTD 2007 and I noticed that it has vibration when i do hard acceleration.
When i'm riding 5th gear it's all fine no vibrations no nothing, or if I accelerate slowly. Just when I start going through gears it has vibration on the pedal and the whole car. I just checked my wheels they are all straight and re-balanced, tyres are also fine. Could it be something with gearbox or clutch, or more with injection?

Best things to do is first check the tracking is good or close enough , other than that check engine , gearbox and torsional mounts as well as driveshafts as these can all cause Judders and vibrations
Let me know how you get on ?
Regards
Mac