Hi, I've got a 1994 300TDI that has developed a strange noise this morning.
Whilst driving along I suddenly realised than when the engine is under load (e.g. going up hill and accelerating) there is a sucking noise. It sounds to be coming from the passenger side behind the glove box and the wierd thing is that when I reach my target speed and throttle back, the niose disappears completely.
The sucking noise is quite loud and I can't see any hoses that are detacted or broken. The noise does not occur when the vehicle is stationary and I rev the engine. power seems to be a bit down compared to yesterday as well.
Any suggestions of where to look?
Thanks, Dave
