Have a series 2, its chipped, 16psi, have a pace intercooler and fast road cam.
It has just been fully rebuilt with new pistons etc.
I did notice not long after it had been rebuilt, racing down the bypass then back off for

roundabout and it was popping, this was due to the fact the oil filler cap had blown off -

wasn't sure why as it has just been rebuilt. But its been ok for a month or so after then.

Now just recently it has been blowing off more reguarly, also there are traces of oil coming

out of the dumpvalve, and its gradually getting worse.

The next problem which is baffling me is that if the car is left overnight, when starting in

the morning you get a cloud of blue smoke for about 5 seconds, but doesn;t seem to smoke at

all apart from then.

Could these symptons possibly be the turbo on the way out? or could it be due to a poor

engine rebuild?