Smokey 4JB1-T after long runs

[bedford4x4]

G'day everyone,

I've had a long break from the forum due to a really intensive course I was doing. I finally finished the course and now ready to do some much-needed maintenance on the old truck, including both electric window winders, GRRRR!!!!

One thing which I have noticed is that while doing day-to-day starts around town, the truck doesn't blow any oil smoke. If I've been driving out on the highway for a while, the next time I start the truck it blows a big cloud of blue smoke. The motor starts first pop every time, so it shouldn't be rings.

A guy at Turbo-care in Christchurch says this is normal for 2.8 and 3.1 Isuzu diesels and reckons a catch-can sorts them out.

Is he right or could it be something a bit more serious?