Thats not strictly true Pat. It should log the code, it just wont be 'current'
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i have a theroy on this, i think teh sand is forced into teh filter from the top of the draing nut if it is not cleaned when a sample is taken. when i cut my filter open to see if it was blocked (there was a small amount of sand in there) the nut that the drain plug goes into is not sealed so any debris on top of teh drain plug is screwed into the filter, this then gets washed out of the small neck from fuel flowing past the ancour nut, so next time a sample is taken there is sand or grit in it.
not a great design, in my opinion.
ian
I know its not strictly true but I've worked on these type of problems before and it's common for the MAF to have oil residue on the element causing rough running and not showing up on the scan.It is a very common problem on engines with a few hours on them.I have a rodeo with the exact same problem as dullbirds puma that will run like a swiss watch after a squirt of contact cleaner.My disco I've just sold was the same,clean the MAF and the difference was clear. Pat
er it does (not all the imte)and it has.....thats how the pressure relief valve on the common rail has been changed twice. (related code)
you cant tell me it wont log a code if it has been bad enough it has gone into limp mode.
Infact we have even picked up codes on our scanguage...now it might not be directly realted to the problem but this again only strengthens my theroy on the fact that they could be chasing a code down a dead end street...
I believe the dealer has excepted the cost of the filter...without us asking once we called and told them the problem is still there :).
So I feel much happier that if feel they are being fair with us.
ok here you are its not great but turn your volume up.....drag the slider to about 45sec the engine rattle starts at around 51sec and finishes around 57
[ame="http://www.youtube.com/watch?v=PxbjADhXiE4"]YouTube - MOV00002[/ame]
Sounds like diesel knock to me,was it cold?,It sounded like it was trying to give you what you wanted but the injection timing was too early. Pat
yes it was cold as it always is when it does it..... why do you think it doesn't do it from start up? I personally describe it as a rattle not a knock....because it rattles the whole car when it does it and when your in the car sounds a bit like a machine gun