I had a 2011 i20 1.4l, the crank sprocket pulls down on the intake cam sprocket, with a fixed guide plate. The chain pulls from the intake sprocket to the exhaust sprocket. The tensioner guide plate is between the crank sprocket and the exhaust sporcket. Loss of tension at the guide tensioner can result of the exhaust cam slip, however there is a gap of unsupported chain between the exhaust and intake cam. So it could be possible to jump there as well. My 2011 had the first gen timing chain and tensioner, I started getting the rattle on startup and was down on power. I didn't see if it was out of time when the chain got replaced for the thicker one, but I know the tensioner was not doing its job properly. Even without oil pressure behind it the new tensioner was a lot stronger.