Vn has a weird knock

[modcon]

The Vn started making a weird knocking noise out of the blue last week, sounds like it is coming from below the motor but can't identify where. On start up and idle it is bad knock knock knock knock knock knock knock..... as soon as you hold your revs up it goes away. It allmost soulds like a vibration but there doesn't seem to be anything hitting anywere, any ideas where to start looking or what to start checking, by the way the car is still running 90% sweet it just feels a bit heavy, and yes oil is aways all good!!

[tmaybz]

remove belt ,check ur harmonic balancer on crank 4 wobble or side movement
this also has crank angle sensor,also check it 4 splits in the rubber &all other pulleys,
cheers Troy

[broderikb]

My old VN made a similar noise at idle & turned into a vibration at revs. It turned out to be the bearing in the A/C pulley was on it's way out & was putting a load on the engine(could explain your heavy feeling). I only found out when I touched the pulley & almost burnt my hand. Just a thought.......

[MyVPIsFasterThanYourVP]

not engine mounts sagged? (they rest on the bolt than runs thru them and it can make strange noises)