I note in last Sat's Telegraph that Honest John says he is moving away from recommending diesels built in the last 8 years in favour of petrol. He cites the high cost of repairs of common rail engines, one problem being the dual mass flywheels, which are necessary to combat the vibration of common rail.
Can someone explain why there is more vibration in common rail engines than older types? I note that an OP in an earlier post replaced a dual mass flywheel with an ordinary one for cheapness. If this works, why don't manufacturers use ordinary ones?
Rob Graham