You should try running some diesel purge through. Also, do you have a gauge that you can hook up to measure the turbo boost? You should be able to do a search here to find out waht the boost should be at. I don't own a car with that engine so my advice is rather vague, sorry.
Thanks
David

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2000 Honda Accord V6 137k miles

1972 300SEL 4.5 98k miles

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