Hello. I recently bought a second hand Alfa 159, 2,4 JTDm Q-tronic. It was kinda cheap, because it had issues with DPF and EGR, but overal it was a good buy - had a service history and only 175 km on the clock. My budget was kinda tight, so I went for it.
First thing had the filters and oil changed. I left the gbox alone without changing oil, since i found that it is not realy advised. It sometimes (very rarely) kicks a bit while changing from 2 to 3 when you push it, but no other issues, manual works fine.
2nd I went for a remap, done professionaly, 170 kw and 430 torque done. DPF removed, EGR blanked and closed shut, because it was stuck in an open possition. It drove better. But the problem with RPM on free range revs still stayed. It vibrates a little and you can see that RPM is slightly "pulsing".
So i went to check fuel injectors. They were all like new. Checked compression levels and got scared... 1,2,3d cilinders - 28 BAR, 4th - 24BAR and the 5th only 21BAR. Now i know this is gonna be expensive, but how did that happen ? What i do next ? I have no warning lights or errors, but on computer you can see that the injectors seem to be injecting too much fuel (compensating or somewhat it's called). I also get a fair ''puff'' of smoke when starting it on cold when the DPF was removed, but no smoke when driving, even when you push it real hard.
MAF seems to be working all right on computer.
Inlet manifold was never checked, but i don't know if this can be an issue for excesive fuel consumption.
The other issue is that the fuel consumption is real bad. I know this car is not economical, but what i get is 600 km with 60 liters, which adds up to 10,2 - 10,4 l/100km on average by the computer. And it seems to eat quite a lot in town, as i can sometimes see the fuel gauge drop ater just 5 - 6 km/s of sporty driving.
Converted to MPGs this is something aroung 23,5 MPG in average, mixed modes. 60% motorways and 40% town driving. This consumption is realy bad compared to what others say on forums.
Don't know what to do, because all solutions seems to be very costly, as you have yo go deep in to the engine
I am starting to regret this buy.