On the scan gauge the idle is fluctuating between 710-780 but then sits steadily 750/760. Every now & then theres a deep...pop/bang/rumble its hard to describe. You can feel the car slightly judder when stationary, no problems when driving/on boost. Im presuming injectors? But wouldn't they give me problems when on boost also? Cheers. Lee.
I have the exact same problem, I had new injectors but it still does it. It has been suggested to me that it could be a worn throttle body, or it's a bit clogged and may just need a clean
Inlet side Outlet side Outlet cleaned up Refitted. Just waiting for the car to warm up, monitoring on the scan gauge.