Page 1 of 1
4.2 engine suddenly has started to blue smoke
Posted: Tue Aug 02, 2011 11:29 pm
by 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.
Re: 4.2 engine suddenly has started to blue smoke
Posted: Wed Aug 03, 2011 7:18 am
by 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.
Re: 4.2 engine suddenly has started to blue smoke
Posted: Fri Aug 05, 2011 10:57 pm
by wirewheel
the engine is a 1985 year.
Re: 4.2 engine suddenly has started to blue smoke
Posted: Sat Aug 06, 2011 7:38 am
by 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?
Re: 4.2 engine suddenly has started to blue smoke
Posted: Sat Aug 06, 2011 8:48 am
by 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
Re: 4.2 engine suddenly has started to blue smoke
Posted: Tue Aug 09, 2011 12:33 pm
by XjRestorations
Certainly sounds like Valve stem oil seals. A revitaliser may work, but not for long
