The tapping sound could be from many parts in the engine.
A result of the original failure or another issue in the engine.
Unfortunately I can't give you an exact diagnosis without seeing and hearing the engine myself. Is the noise at the top...
Aha, OK. So the engine in a fashion adds fuel and subtracts a bit of fuel to allow more air to go into the cats to boost the efficiency of the cats to burn the emissions off. This is why the fuel trims lift and lower and in turn the lambda sensor...
If you can get the nano In graph mode (not sure). The short term fuel trims should average around 0 in the plus or minus.
The lambda sensors should have an undulating wave pattern indicating more or less oxygene pass-through the exhaust and cat...
The 3.0tdv6 isn't a great engine unfortunately. It's not a question of "if" it fails but "when"!! 😢
Métal would be found in the fuel filter not the engine oil, if that's what you mean?
Any tapping noises near the bottom of the engine block could...
Did you flush the entire fuel system? A blown pump will contaminate the whole fuel system with metal.
Normally just one failed injector will warrant all six to be replaced and a failed pump will warrant a whole heap of things to be replaced...
There's a lot of loose chippings round here at the moment, usually from stones getting flung up from pot holes.
The bus-grade cleaner has a mix of alcohol and other stuff, but I'll give white vinegar a try. I've got some acetone, used for making...
Check if the existing O2 sensors are working first. Although it usually recommended not to clean them, I've had good results in the past using carb cleaner on O2 sensors. Make sure the connectors are properly clean, as their position either...
pwood999 - thank you very much!
That worked out great - the windows are closed and I now have peace of mind and can prepare everything else in peace.
This was my setup: I quickly built 2 plugs
Hmmm, humidity and l322...
Don't use steam please🙏
It sounds like back in black dashboard spray doesn't it🤔
It is a mare to shift for sure.. I'd go with some of the above ideas before letting the car even see the steam😜