Every now and then, more often now, I hear this kkrrrrr sound when I start the 240 up cold. It happens with the clutch in and out, comes couple seconds after started and lasts about a second. It was happening before but then I think it went away during the summer mostly. That could be because I fixed my idle speed adjust so I start on full idle now. I dare not say the input shaft bearing, that'd be no good at all. Any ideas?

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1983 240D 3.0T 4-speed manual, now sold

1989 Subaru GL Wagon 5-speed Touring Edition