Hi jeepers,
few weeks ago it started a whistling sound coming from engine (or turbo?) during acceleration (2000-2500 rpm).
Any recommendation what to check?
Ideas how to check that the turbo is still fine?
My xj has 230.000 km and it's a dd. Perfomances haven't changed
I would start by checking all your intake/discharge and vacuum hoses for leaks/loose clamps.
Then check your exhaust gaskets near the turbo for evidence of leaks, ie. soot around the flanges.
Put a spanner on your intake manifold bolts just in case.
It is more likely to be something along those lines than the turbo itself, but it would pay to check it when you have the intake hose off.
Check for excessive oil in the intake (very small amounts are normal for that sort of kms) excessive shaft play (if you know what you are doing) any damage to the fins or evidence the compressor wheel has been contacting the housing.
Didn't have time yet to take an accurate look at the engine bay but the turbo is clean, however it's oily very close to it, where the thermostat sits. I will try to post a pic tomorrow
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