Update, still got air lock in water system told not to worry??? As plenty of fluid in reservoir, still vibration in steering even when stationery, dealer says they will re check alignment etc, booked in for 20th to sort all out, we will see.

Have the dealer do a cylinder pressure test and fluid test, my 19 plate failed and has had a new engine fitted,rings on No.3 faulty hence using oil.

Quick update. Car going back into dealers for 1000 mile check mid Jan @ same time repaint engine bay cross members plus full body,inside, outside & engine bay valet. Seem to have cleared air lock,thanks andy2019. Also have to get them to check for a vibration now on steering wheel. Poss new engi...

Seems to have done the trick,just wondering if there any bleed screws on the system

Engine was warm took off 2nd cap loads of air pressure released will try again in daylight. Thank you, that might do it.

It gets better, not. Nissan now saying I can't reject the car as its now nearly 8 month's old even though this farce started at 5 month's old & it's taken 3 months to get the car tested by the dealer and new engine fitted. Now there are fluid noises coming from under the car, poss transmission??...

Yes that's what I thought, it appears according to consumer law they get a chance to rectify the rectification.
Then I can push for compensation for loss of use etc.
I just can't believe what is happening to me.
Still awaiting responses from dealer and Nissan.

Hello everyone, I tried to reject the car when it first went wrong just on 6 month's old, fault started a month earlier, dealer was unsure and said it's down to Nissan, Nissan adamant that it would be a new engine and not a replacement car as in their word's it would not be cost effective to replace...

Update. Got car back today, sitting on forcourt looked spotless gleaming in what little sunshine was about. Started up first time only to see 9 miles of fuel range left,never mind off to petrol station, topped up and home,still so far all good,sounded lovely engine quiet and smooth. Parked up at hom...

I agree with what you say. I had to wait for 3 weeks to book the car in with the dealer at a time that suited them. Also had to ring them first week for progress report even though they said should know in 3 days what the problem is and would keep me informed, they never rang back. Then I called in ...