Hello All,

I have an issue with my Range Rover that I've ignored for months. The MOT ran out in October, and I've just left it parked since then. Insurance and Tax renewals are coming up, and I want to get the RR off the driveway and working again after letting it sit so long and save the annoyance of either cancelling the insurance or having to sorn it etc.

I had a few problems with it and managed to fix them all but this one, I installed a new turbo, serviced it, broke down on the M25, replaced the prop shaft and all was well again. Then the misfire started, that's where it was left since October (Not moved or driven).
It's very odd. On idle, it will run beautifully. You can rev it to your heart's content, and the misfire will not appear. Even letting it idle right up to operating temperature is okay. When you put it into drive and try to pull away, that's when the misfire starts. It shakes, white smoke out the exhaust smells like diesel.

If you put the car back into Park it continues to misfire until you turn it off, restart and then will not misfire again until you put it in drive and try to pull away. From those issues, I'm thinking one of two issues, MAP sensor or a few injectors are having issues.

Two things to note:
Before I was getting Injector values too low I'd assume a trim value which was under threshold (3 and 5, so 2 and 6 with issues maybe I forget the exact code)
MAP sensor was covered in gunk, I blanked the EGR's and it made it better, cleaned the MAP but this was before the misfire started. I wonder if with the cleaning the MAP sensor was damaged perhaps? I can't be certain if the person helping me didn't poke something into the hole of the sensor .

I can't justify the IID price point so looking at an SDD cable (I'm good with diag software installed/doing Minis for years)
My thinking is to replace the MAP with a new one and see if the issue goes, if not track down the faulty injector and replace it. Any thoughts and anyone local to West Sussex/Hampshire who would be up for scanning the car and telling me which injectors are not playing ball (If any).

Many thanks!

Edit it’s the 2.7 TDV6 Range Rover sport