I've bought a 2005 R53 Mini Cooper S from Copart with the description stating it had an undiagnosed noise from the engine bay. After getting the car, I quickly discovered a very strange noise on lift off and a lack of power.
After a bit of research, its pointing towards the timing being out, so I previously changed the timing chain, serviced the supercharger, replaced various gaskets that were leaking and in my last video, removed the catalytic converter internals as it was blocked and replaced the fuel pressure regulator vacuum pipe. But none of these fixed the issue.
Thinking it is a fuelling issue, I'm now going to remove and test the injectors to make sure they are working correctly and change the fuel filter that is fitted inside the fuel tank. Between changing the fuel filter and testing the car, I had a comment on a previous video from a viewer saying they had a similar issue and the fuel filter change cured there running issue. Fingers crossed!