This tends to more of a North America-centric forum and the diesel variant was never sold here "across the pond". If you don't get the input you need, there are several "oil burner" owners who post to the GB Jaguar S-type forum, which can be found here:
And it still smokes and it is necessary to burn dpf after 80km.
It's falling in restricted performance
The only thing that is measurable is the low flow on the affected side, the scale measures a significantly lower flow ....
Please advise .... I have already injected 3500 euros into the repair and I do not want to give it up
Thanks...
A common problem is an incorrectly fitted timing belt. If the cam is one tooth out of alignment it will run, but not well. Even if you have not recently had the belt changed, if it is loose it can sometimes jump a tooth. I knew of a high mileage Citroen that did this when the bearing on the idler pulley wore out. A ball fell out of the bearing and caused it to jump several teeth. Amazingly, it didn't damage the engine.
I don't understand what you mean by "low flow". Low flow of what? Airflow? As your picture is in Polish, I can't read it.
If you mean airflow, then you probably have a mechanical problem. Do it in this order. First check intake pipes and manifold thoroughly for cracks and leaks, then check valve timing (timing belt correctly fitted and in good condition), then check compression. If compression is not perfect, check valve clearances. If they are ok but you still have low compression, suspect head gasket or other internal engine damage (remove cylinder head to find out).
If you have done all this, compression is good on all cylinders, and you have not found a problem, do not strip the engine. Your next thing to check would be sensors and engine management wiring.
