300tdi Vibrations / low power around 3000-3400rpm

Yep I was going to check valve clearances first since it's fairly simple. Its had a new fuel filter at both of it's services so I don't think it's that but it is easy to do so I might just in case.

Yes I have an EGT gauge. The highest temps I have seen are about 600deg (that was pulling a 2T car trailer up hills), usual driving around city is 250-300 and highway at 100-110km/hr is usually around 400-450.

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Originally Posted by steveG

Worthwhile doing simple things like valve clearances and changing the fuel filter first before diving in too deep IMO.
Are you running an EGT gauge? If so what temps are you seeing there?

Steve

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well I checked / adjusted the valve clearances and it has made the engine a bit quieter and better at low revs but its still got the same problem just past 3000rpm.

The clearances were all around 0.33 - 0.38mm excpet for 5 and 8 which where ~0.55mm

Have you inspected the ic hoses ?