Pardon 120grj engine noise

[Ajw132 Lurker Find all posts View Profile Close Ajw132]

Would anyone have an idea on what is causing my engine to produce a whirring noise when I accelerate.it is a 2003 gxl grj 120 2003 petrol .it will make a noise in neutral and drive thanks in advance

[Guest Close Guest]

Bad idler Bearing, serpentine belt, etc etc.

[Brett1979 Avid PP Poster! Find all posts View Profile Close Brett1979]

I'm unsure of what the sound is but Piggy's highlighted the correct area I believe. A loose belt even can produce a constant noise that I can't describe in words. Can kind of sound like the engine is supercharged. As an innitial process of elimination push down on the longest belt and see if it feels a tad loose. The belts should be fairly tight. Depending on the belt they usually only giving up about 7-9mm of sag when 10kg of force is applied or thereabouts.