4.2 engine suddenly has started to blue smoke

[wirewheel]

hi, can anyone help with why my 4.2 daimler has started to give out a puff of smoke? car still drives fine , but if u drive say 5 mile then stand at lights , pull away to a puff of oil smoke , not allways only some times when hot , no smoke from start up at all , can it be valve seals , engine only done 56000 miles and appears spot on , any help please.

[almcl]

It could very well be the valve stem oil seals.

They harden with age.

How old is the engine in years, original? If so, mileage doesn't mean much, but a 25 or 30 year old seal will probably be past its sell-by date.

[wirewheel]

the engine is a 1985 year.

[almcl]

So, if the head has never been off, the seals are likely the original, 26 year-old ones.

But getting the head off to replace them is quite a bit of work, if nothing else needs doing. Maybe worth living with the problem for a bit?

[J44EAG]

A dose of seal revitaliser fluid added to the oil may soften things up a bit.

Available from most high street motor stores. Perhaps worth a try.

Mike

[XjRestorations]

Certainly sounds like Valve stem oil seals. A revitaliser may work, but not for long