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Oil fumes

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POR1983

New member
My 1983 2.5 Lux has been garaged for the last 6 years and only started very occasionally, when I started her up recently I could smell burning oil in the exhaust fumes, its not making clouds of smoke but there is a definite smell of burnt oil, I seem to remember that 6 years ago when last on the road she would kick out a little blue smoke when revved hard through the gears, a friend told me it was visible at gear changes as I accelerated away from him, my question is could I be looking at worn valve guides?, if so how much are these to have replaced?, could it be stuck oil rings as the car has only run in the garage for a total of a couple of hours over the last 6 years or could I be looking at worn bores? (engine has done 108k, the last 38k in my ownership with regular oil changes), in short what is the most common cause of oil burning with the 2.5 8v?.

PS I dont intend to start the engine again until I have replaced the belts due to the belts age (10yrs).
 
Without a full engine strip down it's difficult to diagnose your problem. It's possible the valve guides are worn, but more likely that the rubber seals that sit of top of these (valve stem oil seals) have hardened with age and are starting to leak which will allow excessive oil down the valve stems.

If you think about it logically, with a N/A engine there's only really two places oil can get into the combustion chamber, up through the rings/pistons down from the valves.

I'd be surprised if the valve guides are excessively worn with only 108K on the clock. Whilst you're doing/having the belts done, it might be worth a HG and top end refresh ?

Chris
 
Guides could be worn and your valve stem seals may have gone hard as well. May be worth putting an good engine flush in (Forte I find is very good, Wynns is crap!) and get the engine up to temperature for 30 minutes or so and change the oil and filter.
Alasdair
 
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