vy shuddering

[pauled15]

hi
new to this site was just wondering if anyone has had problems with shuddering when they take off on slight incline or just putting foot down to keep speed up .
Have got it booked in at local holden dealership this week have got a few ideas about diffs and tailshafts but feels as if it is coming from the engine only replaced plugs and leads 10000 kms ago

[Krisp]

do u feel it through the steering wheel?

[pauled15]

no was thinking wheel bearing but both spinning free also add fuel condontioner and cleaner

[pauled15]

problem fixed turned out to be a cracked lead that was arcing out on the engine also plugs were wrong size looks like mobile mechinics arn't all they are cracked up to be