Question about Volkswagen Passat

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I have a Passat TDI 130, 94000 miles, regularly serviced. Yesterday on the way home from my work car started to surge and belch out black smoke. As I was cruising I would sense the engine loosing power, simultaneously it would belch out black smoke. When I put my foot down it would accelerate with a sucking noise and then again suddenly loose power with the associated black smoke, the sucking noise would also dissappear, then it would accelerate again smoothly with the associate sucking noise. I've tried it again today briefly, but it is getting worse and the fuel consumption on the computer is well down.

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It sounds like you have a leak/ruptured hose on the high (pressurized) side of the air intake. Check the hoses going to and coming from the 'intercooler'. There's a good chance you have a crack that breaks open when you have enough pressure (during accelaration as the turbo spools up) and once the pressure eases up, seems to work normally. You should remove them both and examine closely, looks for cracks that get worse when you flex the rubber hoses. If you confirm, order replacements and just don't push ******* the accelerator.
Good luck

Posted on May 15, 2017

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Sounds like the turbo is going out.

Posted on Aug 25, 2010

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