Ok, blue smoke is burning oil.
So you are saying this engine was rebuilt just 124 miles ago?
Did you replace the oil control piston rings? Those are usually the lowest rings. Did you stagger the ends of the other rings so the empty spaces don't lign up?
If you do have oil on top of a few pistons, then those oil control rings may be worn if they weren't replaced, or the cylinders may be too worn. Did you do any measuring to the cylinder walls?
Thankyou for your reply.
Engine done no more than 200km since rebulid!
Engine block was replaced with second hand unit, proffessionally machined, new pistons, rings, bearings to suit. Cylinder heads reconditioned and new gaskets, t-belts etc fitted.
25 years in the trade have only fitted rings incorrectly as an apprentice!(my but still hurts lol :)
We must be over-looking something as fault is exactly the same as before rebuild, hence our reason for overhaul in first place.
All 6 cylinders have oil on tops. Only no.6 cylinder has very little.
Engine performed as normal with-in 200kms and then just began to smoke as previously.
Pump was serviced, clearances checked and refittted.
Will carry out oil pressure check and get back to you.
Thanks for advise.
Oil pressure checked and reads 700kpa pressure @ 3000rpm.
At operating temperature, gauge sits around 50psi and doubles that @ 3,000rpm.
Looks like oil pump had the gong!!!!
Thankyou so much....we may finally be able to get it right thanks to your help.