E34 Problem after changing glowplugs
I've changed the glowplugs today on my 525 TDS and seem to have created another problem after solving it's starting issues.
Now, when above around 1200-1300rpm there is a loud whistling noise coming from the right hand side of the engine bay (sitting in the driver's seat). The noise sounds like air escaping and seems to happen when the turbo comes on boost and increases in pitch with revs. The car doesn't feel down on power and drives as normal. It's not there at idle, but will do it if revved hard when stationary.
I don't understand what it could be. I've checked the EGR bolts are tight and they are. I didn't use new gaskets on the inlet manifold as i forgot to buy them and at the moment there is one nut missing off the inlet as it fell off and went somewhere unknown (I'll have to get a replacement from BMW - so annoying!!). I wouldn't have thought this could cause the above though.