Originally Posted by
Sp3no
At that point in the Revs and with no fault code it could mean your inlet manifold has stuck, have you checked that the IMRC is actually switching the runners in the inlet, its not uncommon for the cam to break off. With no fault code it sounds mechanical. If you pull on the cam on the end of the inlet you can feel and hear it move inside.
yeah i changed that for a new one,, checked it and can hear the flap openin and closing thats why im at a lost end grrrr
