Agreed - blue is bad - that indicates oil problems, which would be rare.
Are you sure its not black, Lee? That would be considered normal on an old design of IDI Diesel engine, as you have there.
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ill check tommorow but the car was accidently overfilled with oil about 4 weeks ago so im wondering if it could have caused damage? i think if anything the turbo seals will ov went
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Overfilling the sump with oil won't ruin the turbocharger oil seals..
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overfilling- i exsperienced it running of its own oil could it of damage any otherpart part of the engine ? i had the management ligh comeing on a few day later after i put the oil to the correct level, the engine has only did 70k miles and has fsh so if itsburning oil i would imagine its the turbo, what do u think?
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If I understand what you have written, this is:
The oil level was too high, overfilled
The car engine ran on, ie kept running with the "ignition" off.
The management light keeps coming on.
Is this correct?
If so, it is a known phenomenon with diesels and not one to worry about.
The turbo can leak oil, either into the exhaust or out of the casing. Is this the reason why you were topping the oil up?
How often do you need to do this?
Please do not overfill or you will get the symptoms mentioned.
So, yes. the turbo may be leaking oil if you are seeing blue smoke. Can you detect any movement in the turbo bearings?
You are only looking for about 1mm lateral drift.
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i had a look for leaks round the back of the engine near the turbo because when it was over filled there was smoke comeing from the turbo area so i thort the oil pipe might have leaked. I have spotted wet oil on the manifold bolt near the turbo, could this be spraying little quatitys of oil out onto the manifold or can it leak through the bolt?
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We are not really getting to the root cause of your problem yet.
Your first post was about blue smoke seen following the car.
Was this coming from the exhaust?
If so, it could have come from the turbo leaking into the exhaust system, but also from worn bores, leaky valve stem oil seals, etc.
Why was the oil overfilled?
If you see oil outside the turbo, there may be a leak. if an external leak, then possibly also an internal one into the exhaust giving visible smoke.
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hi, i have found oil on the end of the manifold bolts which when wiped off, and driven the car again it reappears any suggestions of what it could be? the oil always goes down to 3 1/4 after i have fill it to the top mark
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Camshaft cover loose - carefully tighten the three securing bolts. Often solves oil leaks from the top of the engine....
Otherwise, a new gasket may be required.
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i have an oil leak down the back of my engine on the turbo side which the oil is standing on the manifold, i have replaced the rocker cover gasket and its still leaking from somewhere, can anyone help me?
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HI
Have a good look at your turbo and check that no seal or gaskets have become u/s.
If this still does not fix your problem, clean off the oil, run the engine and watch where the oil is coming from with the engine running.
This is what we do at work when our train engines have got a oil leak and it is an very effective way of finding where it comes from
hope this is some help to you.
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But train engines are bigger and easier to observe running whereas a car engine, tightly compacted into an engine bay isn't!
Good idea, mind, but it does have it's limitations.
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Simon - Out of interest what size (cc) is a typical train engine?
What goes wrong with them etc?
Power output?
I'm not an anorak or anything, just interested, that's all!!!
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16 litre cummins engines.
The company who overhaul the engines (LH Group) use non original cummins gaskets and valves so they leak oil like you would never believe and a lot of cylinder heads are changed.
Like you said they are quite big and in some cases got quite alot of room around the engine to change things that go tits up. The biggest thing that fails on them are the water pumps and aux drives because they are not using proper original parts.
There are 4 different sized engines which are under different types of trains
MTU - 415BHP
Cummins - 285 & 350 BHP
Perkins - 350 BHP
Regards
Simonc
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i took my car into peugeot because the car was leaking oil onto the manifold near the turbo, i replaced the rocker cover gasket and it did not stop the leak, peugeot told me the head gasket is leaking, i also had a low knocking sound comeing from that side of the engine, could this be caused by the leaking head gasket by causing 1 cylinder to be low on compression?
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i have a peugeot 406 1.9dt how can you tell if a big eng is going and how long does it take to go compleatly?
i have a low knock not too bad but it knock out of tune with the engine. any ideas?
it has been like this for 5 month and aint got any worse do you think its anything to worry about or would it have hammered the big ends out by now if this was the problem
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Sounds like a combustion noise to me - incorrect diesel combustion will produce an awful knocking noise.
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groups.msn.com/honestjohn - Pictures say a thousand words.....
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its sounds like the knock is out of step to the engine, any idea?
how long do big ends take to go out?
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Then I'm lost!
Big ends? Should last the lifetime of the engine, being honest.
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groups.msn.com/honestjohn - Pictures say a thousand words.....
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yer i know they should but its the only thing i can think of, ive been driving the car 6 month and its still the same, once the big ends start to knock how long does it take before your big end it knackered?
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ive got a pug 406 1.9dt its sounds like a rumble on the bigend mostly noticeable when at idle and dissepears mostly at higher revs,
can i do the bigend repair with the engine still inside the car by taking the sump off?
what do i replace just the shells and bolts?
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Lee,
Pretty sure you can do this job in situ - however, it is almost unheard of for XUD engines to run big ends. As you have left it for a good few miles, I doubt you would get away without a crank regrind - which you can't do in-situ! I would be going looking for other causes first, such as the alternator, its belt tensioner, a valve clearance that has opened up, a sticking injector, some sort of mechanical contact etc etc. A stethoscope might help (usually a long screwdriver these days!)
RichardW
Is it illogical? It must be Citroen....
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If it is a big end, you are most unlikely to be able to effect a lasting repair leaving the engine in. Almost certainly if it is knocking then the crankshaft journal itself will be worn, which means engine out and getting the crank reground.
Just possibly if there was a specific cause of the bearing going, and you were quick enough to stop the engine while only the whitemetal of the shells had gone, you might have got away with only needing new shells. But from what you say it seems you have been driving the car in this condition.
This is surely one of those questions from yesteryear? I don't think anyone mends big ends these days - they just get another engine from a scrapyard ? (Unless it is really rare or a cherished classic)
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You should be able to get a crank regrind and oversize shells thro' a local engineering business.
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Hi,
There is a fairly straightforward test for identifying big end noise and also piston pick up which diesels can suffer from. You say you can hear the noise at idle and presumably with the bonnet up. If so (and this is quite a messy job) just undo the first injector pipe with the engine running. Listen for the knock to disappear. Re-tightn pipe and do thesame procedure to each cylinder in turn. If the knock could still be heard whilst each injector was loosened, then its not the big end or a piston picked up. By doing this testyou are taking the pressure off the cylinder/piston/big end so it should identify if you have a problem or not. I would suggest a copius quatity of rag to cover the leaked diesel and a decent pair of rubber gloves.
Hope this helps
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These are the views of Robin the Technician with 35 years in the trade. I fix, therefore I am...
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Certainly won`t be a big end after what you said.the unit would have failed before now.loss of oil pressure would have killed off rest of engine.could be small ends.but unlikely.check out fuel pump system something there may be cause.unless I stand corrected injection timing may be slightly out
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Hi Lee,
Regarding this, I am experiencing thesame problem with my 406 1.9 td. They replaced the rocker cover gasket and still leaking at the back of the engine. Back then, what was the problem for your car?
Thanks
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Hi
There was not a problem the gasgets are just not very good, U have to make sure u get a seated properly, I had mine of 3 times before is sealed
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