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Engine gone bang

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Old Dec 3rd, 2019, 21:51   #11
Clan
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How are you getting on with the trader has he got the car yet?
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Old Dec 3rd, 2019, 22:24   #12
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They had the car for two weeks. I got it back from them yesterday.
Basically the independent report said my fault for not checking oil level inline with the Volvo guideline. However Volvo state that do nothing with the oil until a message is displayed. But I do know I checked the oil myself.
They are just not playing ball at all. So it seems that I have to do the donkey work to prove it is not due to poor general maintenance.
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Old Dec 3rd, 2019, 22:33   #13
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Quote:
Originally Posted by hodgie2019 View Post
They had the car for two weeks. I got it back from them yesterday.
Basically the independent report said my fault for not checking oil level inline with the Volvo guideline. However Volvo state that do nothing with the oil until a message is displayed. But I do know I checked the oil myself.
They are just not playing ball at all. So it seems that I have to do the donkey work to prove it is not due to poor general maintenance.
what did the independent report say about the cause and what had happened inside the engine ? And what had been carried out previously to the engine ?

How do they know you didn't check the oil ? You get a warning right in front of you long long before it runs out of oil , It should go from service to service anyway without using a sump full of oil ....
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Old Dec 3rd, 2019, 23:19   #14
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In fact excess oil is more of an issue due to fuel contamination from overfuelling when doing a dpf clense.........
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Old Dec 3rd, 2019, 23:54   #15
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So this is the paraphrase of the report.

The independent opinion was that based on the physical assessment, info they were supplied (not directly from me though) observation made and previous experience.
When the engineer arrived the oil had already been drained and the sump was off, not exactly independent so far. They were informed that only 1.5 litres of oil left in the sump.
Only No 5 crank journal was removed which showed evidence of scoring, the corresponding engine and big end bearing worn and hammered consistent with oil supply interruption.
Seizing of the big end resulted in the fracture of the con rod and damage to the crank case.
Notable oil seepage under the vehicle but they do not believe that there was sufficient to result in the reduction in the oil level.
Inspection stopped at that point.

Not much I can say really my word against theirs and it seems it’s weighted in their favour due to the expert opinion. The fact that I have checked the oil regularly has not been taken into account for this report at all. Using the term seizing is incorrect in my opinion as there is no engine parts welded together, which is what I understand as seizing. Personally I think con rod let go.
All a bit one sided.
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Old Yesterday, 10:32   #16
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hI
can't offer any technical advice here but interesting reading...
obviously you haven't posted the whole report but a couple of things spring to mind that should be asked of this based on the posts:
Is the report independant, who commissioned & paid for it, is the 'expert' known the dealer & what are their proffessional qualifications?
Just because a part is generally reliable does not mean that they never fail. Does the report mention testing the oil level sensor and associated systems? if not the report is at fault since this is the only way for the owner to check the oil and without knowing this they cannot make reliable conclusions on whether the oil was checked or not.
If they did not witness the draining of the sump they cannot report it as fact that there was only a certain amount of oil removed (the garage are an interested party).
Does the report include all of the fault logging within the vehicle? if not a big hole in their investigation since modern cars are built around the computer systems.
I understand that the volvo system logs fault codes with a time line (so my local indy tells me) so the codes you can see should give you a story line.
The report should record all of the observations of the inspecting person, the likely causes of any damage and the mechanism or processes that may have lead to this. From the analysis of this evidence they can draw conclusions, which may draw on their experience, as to the likely source(s) of the problem.
I would say that they could only postulate that 'lack of maintenance' by the owner was the cause when they have eliminated all of the possible 'internal' causes.
if you have been checking the oil and no warnings came up then i can't see its anything other than a vehicle fault ... just a bugger arguing the case.

i hope that you get this sorted out sooner rather than later.
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Old Yesterday, 17:53   #17
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Evening , sorry to read about your problem .

From a tech side of things if your battery voltage is low , you will get inconsistent code readings / erroneous readings from sensors . It will also fail to work with canbus system accurately . You need a fully charged battery before you delve into code reading .

It is also possible that if oil has been lost /drained , then the level sensor will record that fact & it may be an inaccurate reading based on this point ( one to fight with ).

Good luck
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