[Melideon]

Hi,
I have recently purchased an i30 GD petrol. I immediately drove it 600 KMS and it ran perfectly. Next day it cranked and cranked and eventually started but sounded like a diesel. Eventually noise went away but had heavily reduced power and stalled a couple times. Left it turned off and ran fine again except at start up where sounded like diesel. Sis long trip ran fine but was rough on start next morning. Long trip home car started fine but then two days later wouldn't start at first, eventually kicked over. Any help please.

[Melideon]

Just one other thing. The car will not change down. Automatic from sixth gear after stopping or slowing. Have to shift to neutral and will go up gears but won't come down. This only occurs when loss of power