Question about 1991 BMW 5 Series

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BMW X5 Diesel..When I accelerate hard I can hear a whistling,rasping sound and the car lacks power. Any advice greatly appreciated!

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  • Tonino2 Aug 12, 2008

    Thanks for the reply.I had already checked that!
    I have just finished putting it all back together.I removed the turbo and took it to a turbo specialist, who stripped it down and replaced various parts (though it was not a full re-con).
    I have run it at a decent speed and it seems to have cured the problem. Total cost of the turbo re build was £350.
    Thanks again for the advice. I guess I wasn't as lucky as you were !!



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Had same problem, mine turned out to be a split turbo pipe.

Posted on Aug 12, 2008

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Have a go at the Positive Crankcase Valve (PCV). its located under the engine cover towards the rear of the engine in an odd shaped black plastic box alongside the fuel injectors, Dont pay BMW the Big dollars. Buy a filter for $50 AuD on Ebay or the whole unit for $120 AuD. You have to remove the engine covers to do it but thats not so hard really, just a bit involved and takes 10 mins to remove the engine cover. The actual filter is a throw away job, but the whole PCV assembly is just a degrease and clean. Its held in place by four small hex headed bolts, when you lift it you'll find the small can shaped filter pinned underneath. Swap the filter. its VERY unlikely to be your turbo at 41,000m.
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