Hi there, I have a 2019 Nissan nv300 1.6 dci (145 bhp). Over the last 6 months I’ve had a very persistent clicking noise as heard in the video. It only seems to happen once the engine is warm and the timing of it never seems to speed up or slow down, even when you rev the engine. Is this a normal sound? The video was taken from underneath the drivers side door as it sounds louder there and isn’t as audible in the engine bay. I’ve already taken it   to Nissan months back but typically the noise wasn’t present as the van had cooled down and didn’t come back while the mechanic was listening! 

appreciate your help

 

steve
 

 

It does sound like injectors but also a diesel knock and nothing out of the ordinary from what I could hear....not got the best hearing though 

Thanks for your response Trevor. I don’t think I’ll go rushing to the dealership and just wait until it’s due a service and get them to take a look. It drives great just a noise I’d not heard before! Thanks 

If in doubt or if it gets any louder then take it in sooner to be on the safe side