WHISTLING BELOW TURBO

sounds to me the blow off valve is working for the turbo mabye deffective .

Duplicate question.

it sounds like the catalytic convertor is blocked

Turbo vehicles often sound like they are whistling when the turbo spools up because it is sucking in air at a high rate and it makes a bit of a whistling sound. Generally not a problem unless it is a different whistling that you are referring to.

Clean/Change air filter, fuel filter, air filter, turbo filter. Clean and check EGR valve and Turbo gate. Check the hdi fuel pressure. Open the injectors and clean it. Give it a try and may be you can save 600 euros.

10w40 semi synthetic would be your best bet

it sounds like your turbo has packed in firstly the oil seal in your turbo has failed thats why ur seeing oil from exhaust & the whistling from turbo is the vanes in turbo breaking up so i would advise not to use car until new turbo is fitted & inter cooler pipes and inter cooler itself are checked & cleaned for swarf from turbo you can check turbo by disconnecting turbo pipe &inspecting turbo vanes (fins) to see if broken up or any damage to chamber.

you could try looking at the hose connections on the tubo in case any have worked loose or a possibility the turbo it self has had it
but these are only my guess hope it helps you in some way
regards gr1o1

if the performance is the same but no kick when the revs start to rise, it could be the internals of the turbo are worn out, have you had abnormal whistling from the turbo which indicate worn bearings, turbo's last around 100,000 miles before having to be rebuilt, the turbine wears out eventualy as well as the bearings

Hi, I have a 2.0HDI Expert which was doing the exact same thing as yours, blowing thick black smoke, sluggish and loss of power on gradients, a hissing sound and surging. I replaced the air flow meter but that didn't help. I was told to replace the turbo but a turbo expoert told me not to as it would blow white smoke if it was faulty. I was then told to replace the injectors but a diagnostic test showed them to be functioning fine. I was then told to look at the intercooler which had thick sludge at the lower left pipe. I replaced it today - Sunday 12th July and it is now driving like a new van. It now pulls me up gradients with ease in 4th and 5th instead of having to drop gear to get to the top. I got a replacement from Euro Car Parts for £147 inc VAT. To tell if this is your problem, look through the gaps in the lower section of the bumper at what looks like the radiator and look for sludge over the inside of the bumper and all over the pipe where it joins the back of the radiator (intercooler). Also open the bonnet and look down behind the grille for the same sludge. Hope this sorts it for you. Barry, Newtownards, Northern Ireland.