Land Rover Restricted Performance message on a 2010 Discovery 4 and Smoke test.

This short video is the result of several weeks of hunting for the fault that caused my restricted performance trouble code.
If you have this fault check for obvious leaks first but failing that get it smoke tested ASAP, I wish I had. Mine would only show up on a cold morning or towing uphill.

[@tolgakaanakbas9622]

Thanks a lot for your brief video. Helps to much to solve the problem. Restricted performance massage disappear after cleaning mass air pressure sensor in my case. 🙏

[@plasmaDave]

That's good news 👍 I'm now about to change out a cracked inlet manifold on mine.

[@DeepFutureSim]

Very good . Nice job

[@iansummers6945]

Inlet manifolds/rocker covers can successfully be changed without pulling the body off
Also check the vacuum solenoid on the passenger side cam cover which operates the secondary turbo
Had one fail which bought in a multitude of codes and restricted performance

[@plasmaDave]

Restricted Performance can be caused by many things, this was my story anyway. I have seen videos where they change the manifolds with the body on not an easy job but possible. 👍

[@mikeking2962]

Cheers pal 👍

[@Aussieaje]

THANKS ^^ SAME PROBLEM WITH THROTTLE BODY LEAKS... ^^;;

[@plasmaDave]

Curse the plastic parts 😳

[@Adventures-and-More]

Usually turn it off, wait 5mins, turn it back on and all ok for another year

[@plasmaDave]

Not if there is a hole in it and you tow.

[@BundyBearsShed]

Fergies dont have that problem. just sayin, lol.

[@plasmaDave]

But if I had one of those what would I do with the spare time not having to repair it 🤣