hi, i have a 53 plate nissian x trail (2.2CD) with 99000 miles. every thing was fine until a recent flood in Devon and I drove through deep water. it has now started to whisle under excelleration (under load) and sometimes when I rev the engine. its performance has not been effected and I have driven it back home some 300 miles without incident however the noise is still there. any ideas please.
the depth of water was not that significant to enter the air box. have checked the filter, which was new a month ago and no signs of water damage or dampness. the sound does seem to be coming from the turbo though?