strange whistling sound coming from engine when i accelerate
hello i was wondering if anyone could help, I am experiencing a strange whistling noise coming from my engine. its not particuarly loud and the performance of my motorhome has not been affected at all but it wasnt there before an i was wondering if anyone could help me find out what it is.
My motorhome an iveco turbo daily model van. it doesnt happen when i first start the engine but after a while, especialy if im just cruising on the motorway, it starts up, generally when ive got my foot down more on the accelerator, and doesnt go away again. as it doesnt happen when the engine is just idling i cant open the bonnet and find the exact location of the noise but it seems to be coming from the area of the engine in front of the drivers seat.
i was thinking it might be the turbocharger, as it seems to only happen when i accelerate more, or someone else said it might be the dump valve.
does anyone know how i could find out for sure and also what would happen if my turbo charger went, would the van still be drive able but much slower or would the engine be unable to run at all?
any help much appreciated, leo