Wifes freelander 2.0 D has just tried to kill its self. started smoking a bit then reved its nuts off and didn't stop with key removed.
carried on like this for maybe 5 mins then stopped it's self
sumps very full over the top of the dipstick gauge. coolants got out somewhere all over the road.
i'm guessing leaking injector but what do you think the chances are for an easy repair job or will it be toast
Turbo oil seals gone causing oil to be pulled into engine which then causes it to run away. Sounds like it's blown some gaskets (head) as a
minimum which caused it to stop. If sump is full I guess some coolant has got in there as well as all over the road.
Yep, agree with Mookaloid, Son in Laws Astra TD did exactly the same, the turbo bearings went causing the oil seal failure, presumably sucked oil in
and ran on that, until the amount of oil in the chambers caused too much pressure and blew the head gasket....
You're lucky if it's a gasket that made it stop, usually they run to destruction. Either run till oil runs dry and seize
or a rod through the side of the block.
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
my first thought was turbo oil seals, i pulled the dipstick thinking it would be empty, but its way over full, and it's not made mayo so
i'm sure its lots of diesel blended with the oil
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Building: McSorley +442 - Built, and now sold :(
posted on 14/10/14 at 08:55 AM
Yep, Mookaloid's got it!
Turbo 'runaway'. The turbo uses oil under pressure from the engine's oil system as a bearing fluid. When the seals go, the oil keeps
feeding the engine even when the solenoid to the pump is shut off. As long as there is oil in the sump the engine will free run, and with no governor
it will rev its n*ts off!!
The normal way to stop it if you're brave enough is to starve the turbo of air by blocking off the intake. The normal result is a toasted engine
as it runs itself dry of oil and seizes.
Surprised it still had oil in though, must have seized first through overheating maybe?
The turbo is not necessarily the primary cause in this case, though it's probably fairly well worn. If this is the TD5 engine then fuel in the
oil is a common problem, and when you get enough diesel in the oil it will make a run away far more likely.
The diesel can enter the sump either via leaking o-rings on the injectors which causes the diesel to leak straight into the top of the cylinder head
or by the high pressure fuel gallery in the head becoming porous/cracking.
This is the td4 bmw engine. i don't think the turbo is the cause either, however at 160k miles it could also be ruined, if the turbo has
gone i probably won't attempt a repair.
Just from the dip stick the contents of the sump appear to be very thin oil so i'd guess at oil and diesel, recently mixed at 5krpm
injector leakage might be the problem not heard of the head becoming porus (does this happen on the td4) though i think the fuel lines are outside
of the head with only the tip of the injector in the cylinder
i think first jobs are check turbo shaft and pipes for excess oil drain sump to normal level pull injectors and see if it'll turn over
without any death rattle
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Building: Magenta LSR Ver 2.2.3 AKA Tupperware Turd
posted on 14/10/14 at 01:14 PM
Are you sure the sump is full of oil?
It may have coolant in the bottom of the sump with the oil floating on top. As said by others, 'dieselling' seems to have occurred so you
need to find out the order of events.
I've seen engines run-away due to having too much oil in the sump so ask when it was topped-up. It's usuall for turbos to give a bit of
warning before they let go completely, so ask about oil consuption and smokey emmisions. Look to see if the exhast is full of oil although this could
have been caused by the run-away!
If there's a water to oil oil cooler, that could fail which can allow water into the sump which can raise the oil level enough to cause a
problem.
Most diesel run-aways I've had to repair have had catostrophic engine failure. Either seized or popped a leg out of bed.
Good luck.
I think all 4 legs are still tucked up in bed apparently it stopped over a period of time rather than dead stop.
Oil was changed maybe 8k ago and other than me checking and topping up once or twice it was in the middle maybe a week ago, so not over filled.
i'm going off the dipstick maybe an hour after the event all one colour no mayo thin though it was still quite warm and maybe max mark +
half again i'd have thought any water would have been mixed in after 5 mins at full bore
i drove it over the weekend and all appeared fine. apparently it was making an odd noise and smoking white on the 13 mile home trip. she stopped at
her dads house to ask him what it was. gave the accelerator a light prod to show him the smoke and off it went. white ish smoke covereing the whole
street.
quote:Originally posted by RickRick
This is the td4 bmw engine. i don't think the turbo is the cause either, however at 160k miles it could also be ruined, if the turbo has
gone i probably won't attempt a repair.
Just from the dip stick the contents of the sump appear to be very thin oil so i'd guess at oil and diesel, recently mixed at 5krpm
injector leakage might be the problem not heard of the head becoming porus (does this happen on the td4) though i think the fuel lines are outside
of the head with only the tip of the injector in the cylinder
i think first jobs are check turbo shaft and pipes for excess oil drain sump to normal level pull injectors and see if it'll turn over
without any death rattle
Not to labour a point, but you may just be measuring the oil on top of the water in the sump - crack the sump plug and see what comes out.
If disfunction is a function, then I must be some kind of genius.
quote:Originally posted by 02GF74
Is it not possible to select highest gear, with handbrake on slowly realese clutch to stall engine?
My old boss tried that when his Saab 95 3.0 diesel ran away. Handbrake, footbrake and caravan attached. It just kept going and added a wrecked
clutch to the list of damage.
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Building: Dax Rush - very, very slowly....
posted on 14/10/14 at 08:37 PM
quote:Originally posted by 02GF74
Is it not possible to select highest gear, with handbrake on slowly realese clutch to stall engine?
it can be worth a shot, but if the engine is running at full revs or more it may just slip the clutch or even rip the centre out of the friction
plate...
