Hi Everyone, Im new to this forum and im hoping you may be able to help me with a problem I am having?

I have a 2014 GTD MK7 with 36k on the clock which has an intermittent problem associated with cold starting. When the problem occurs, the car cranks for an unusually long period of time, and in some cases also stutters before firing up. Once the car has fired, the engine runs perfectly with full power and no problems at all. The issue is that the problem is intermittent and only happens after the car has been stood for a long time - i.e. a full day at work or overnight etc. When the engine is warm, the car will start instantly as expected. it will even be fine if it has been stood for an hour or two. Sometimes when the car has been stood overnight, it will start absolutely fine, other times it will splutter or take a longer time to crank over. Has anyone else experienced this or has any suggestions as to what may be causing it? The car is still under warranty and I have had the car into VW twice. There are no fault codes stored and because the fault hasn't occurred when at the dealers, they are saying there is nothing wrong! The dealer changed the fuel pump in the fuel tank but this has not solved the problem. I have several recordings of the fault occurring and have shown these to the dealer only to be told they cant do anything!! I am fuming with them - this is not what I expected on a 2 year old car!! Any help with this would be much appreciated - the link to the videos on youtube of my car doing this is here

https://www.youtube.com/channel/UC5A...w=1&shelf_id=0.

Also, I would like the opinion of any other Golf/Octavia/A3 owners who have the 184ps EA288 engine. I seem to think that when idling, my engine sounds very clattery and noisy, especially when compared to a 150ps version of the engine? Does anyone else think this and think it is normal? Having come from a BMW I have to say that the engine sounds very agricultural when Idling, and not as quiet as I was expecting?

Many thanks for any advice in advance