Oil Overheating

[flyingofficer]

Please help :shrug:. Hi, I have just joined this forum after recently buying a Rover 75 (2003 1.8t petrol model), a car I have been wanting for some time as I like its classic shape. However, my 75 has recently started to overheat the oil, causing excessing exhaust fumes, although the water temp & level remain fine. I am aware of the problems with HGF but have been told that the water temp would rise if this were the problem. Does anyone have any ideas please before I go and shell out the £400+ for a new head gasket to be fitted. Any help or ideas would be greatfully accepted. Many thanks

[andy willi]

call in on saturday to nano meet in doncaster we can look at it fore you

andy

[flyingofficer]

Would love to mate, but can`t get car there cos of exhaust fumes being sooo bad. Thanks anyway.

[T-Cut]

It's not possible to overheat the engine oil without overheating the coolant as well. I'd suggest you probably have a turbocharger with failed oil seals.

TC

[kaiser]

I agree, there is something weird here!
My guess is that you are loosing oil and it is hitting the exhaust manifold or exhaust system somewhere and burning off, if not the turbo seals.
:cool:

[flyingofficer]

I appreciate your help guys, but I promise you the water level & temp are fine and its lost no oil at all (engine clean). Also, exhaust fumes are bad as soon as I start the car without even touching the throttle or the turbo kicking in. Any other ideas please? Someone has suggested that it could be the oil pump?

[suffolk boy]

if your oil pump was fautly the engine would have seized up by now.i suspect its oil dripping on to a hot exhaust which is burning off so you cannot see it.as for no drop in the oil level remember a liitle goes a long way.anyway you are going to have to take a look with the engine running or get it to a garage

[stocktake]

Remove the oil filler cap with the engine running see if it is excessive smokling out of there.

[COLVERT]

I appreciate your help guys, but I promise you the water level & temp are fine and its lost no oil at all (engine clean). Also, exhaust fumes are bad as soon as I start the car without even touching the throttle or the turbo kicking in. Any other ideas please? Someone has suggested that it could be the oil pump?

What colour are the exhaust fumes? Blue or black ?? :shrug::shrug:

If blue you are burning OIL. A little oil makes a lot of smoke. :mood:

If black you are burning Diesel/Petrol. :mood: ( Could be why you say the oil level remains OK, )

( PS> the tubo doesn't 'kick in' it is running all the time that exhaust gas is passing through it ) :D:D:D

[ex-ctr]

leaking turbo seals will smoke on boost or off, black sooty smoke will be over-fueling and you will smell petrol, burning oil is grey, water white the water and petrol will cause poor running as these go through the combustion process and interfere with it causing lumpy/poor running, the turbo seals tend to go on the exhaust housing side and just dribble oil into the exhaust gas causing loads of smoke but does not interfere with the combustion process so the car still runs ok but with a smoke screen:}

[tonybubble]

If black you are burning Diesel. :mood: ( Could be why you say the oil level remains OK, )

( PS> the tubo doesn't 'kick in' it is running all the time that exhaust gas is passing through it ) :D:D:D

OP has a 1.8T (petrol).

[HarryM1BYT]

Just a thought....

Could the engine breather(s) be blocked, pressurising the crankcase and blowing the oil into the chamber to burn?

[COLVERT]

OP has a 1.8T (petrol).
Same colour smoke. Lol.

[tonybubble]

Same colour smoke. Lol.

Probably not burning diesel though??

[flyingofficer]

Thanks for all your help guys, I really do appriciate all your advice and you have given me a couple of ideas to run with. The exhaust fumes are grey and smell of burning. I have taken off the oil filler cap with the engine running and the oil is smoking like hell and stinks of burning, but the water level and temp still remain normal. Also, the engine remains red hot for ages after switching off the engine, but the water cools quickly. Many thanks to ex-ctr for his advice re oil seals on the turbo, as his description matches my car`s problem fairly bang on. Cheers all.

[Mike Noc]

I appreciate your help guys, but I promise you the water level & temp are fine and its lost no oil at all (engine clean). Also, exhaust fumes are bad as soon as I start the car without even touching the throttle or the turbo kicking in. Any other ideas please? Someone has suggested that it could be the oil pump?

I don't understand the logic here - how is the oil overheating if you get the fumes as soon as you start the engine? How do you know the oil is overheating?

The turbo doesn't have to kick in to lose oil if the seals are worn. You could have worn valve guide seals or rings or a pressurised crankcase but the only oil that gets overheated is the small amount that gets burnt off.

As stated earlier you might not notice your oil level going down as a small amount of oil makes a large amount of smoke.

Mike

[COLVERT]

Probably not burning diesel though??
Unless, of course, he is like my wife who has on various occasions put both in her fuel tank !!!! :mad::mad::mad:


Colvert. Lol.

[COLVERT]

I don't understand the logic here - how is the oil overheating if you get the fumes as soon as you start the engine? How do you know the oil is overheating?

The turbo doesn't have to kick in to lose oil if the seals are worn. You could have worn valve guide seals or rings or a pressurised crankcase but the only oil that gets overheated is the small amount that gets burnt off.

As stated earlier you might not notice your oil level going down as a small amount of oil makes a large amount of smoke.

Mike

I think the OP's diagnosis is lacking in accurate detail making diagnosis difficult at long range. :shrug::shrug::shrug:



Colvert. :confused::confused::confused:

[kaiser]

I think the OP's diagnosis is lacking in accurate detail making diagnosis difficult at long range. :shrug::shrug::shrug:



Colvert. :confused::confused::confused:

What range would make it easy?:getmecoat:

[SD1too]

I have taken off the oil filler cap with the engine running and the oil is smoking like hell and stinks of burning ...
This points to serious cylinder bore wear or a piston ring problem.

When the OP says his oil is overheating I suspect it is this smoking to which he's referring.

Simon.

[scouseeric]

This points to serious cylinder bore wear or a piston ring problem.

When the OP says his oil is overheating I suspect it is this smoking to which he's referring.

Simon.

Beat me to it Si, my thoughts exactly.

[Mike Noc]

Now its getting clearer - thanks guys.

Mike

[T-Cut]

Does the car pull as it should? It should go like a bat outa Hell if you floor it. The mileage could be useful to know. If the engine pulls as it should, I can't see piston blowby being the relevant factor in this odd case of 'hot oil'.

TC

[COLVERT]

What range would make it easy?:getmecoat:
Three feet ..:D:D:D
:p:
:p:
:p:

[NikTheGeek]

What if coolant wasn't circulating properly? Could that even happen by some sort of blockage? Is engine temp a measure of coolant temp or is the sensor in the engine block? Its just that "water cools down" but "engine remains hot" sounds iffy.

What about wrong oil? Like really wrong oil! Or fuel in the oil? Would that cause it to smoke out of the filler but run ok? I've seen very low oil levels causing smoke. Wrong dipstick? Clutching at straws now.... :)

[Telferstr]

Hi, Flying Officer, Sir
It does sound like a Turbo problem if as you say there is no Coolant loss or high Temperature indication. The Turbo comes into action as soon as the engine is started and the exhaust gases start spinning the turbine blades of the Turbo. The Turbo is fed with oil under pressure from the Oil Pump and if a Seal has worn out in the Turbo, some of this oil will be pushed into the engine, hence the excessive smoke.
Alternatively, and as already mentioned, a blocked engine breather system could also be the cause. By removing the Oil Filler Cap this would allow any pressure built up within the engine to be released and would be very easily spotted. When removing the Oil Filler Cap you may feel a small amount of pressure on engine tick over, as the natural pressure build-up is seeking the easiest route out when the Cap is removed
However, from what you describe it does point to an Oil Seal failure in the Turbo, allowing oil to pass into the induction system and then to the combustion chamber, then hence the excessive smoke from the Exhaust Tail Pipe.
The only other condition that would produce the smoke you are describing would be sudden piston/piston ring failure, causing compression by-pass into the sump etc.
First port of call, Check the conditon of the air intake piping to the Inlet Manifold, if heavily soiled with oil = Oil Seal failure within the Turbo.
Hope this is of assistance.
Regards,
Telfer.