While driving clunking, revved on its own and black exhaust smoke

2009 NISSAN NAVARA
95,000 MILES • 2.5L • TURBO • 4WD • MANUAL
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GKTAYLOR
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So I was driving home and all of a sudden the truck started making a clunking on acceleration and then just revved all the way up on its own, loads of black smoke came out of the exhaust and when I pulled over I turned it off. It will not start again now and I have spoken to a mechanic and he said it sounds like the turbo? What made the turbo do this? And will it just do it again if I buy a new turbo? Help please.
Jul 31, 2018 at 8:51 AM
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STRAILER
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Yes, a turbo will do this but you can check it yourself pretty easily. Here is a guide to help you see how a turbo works and how to remove the intake tube. Check to make sure the shaft inside the turbo has no end play.

https://www.2carpros.com/articles/how-turbo-chargers-work

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

Aug 1, 2018 at 5:57 PM