streaker
Active Member
- Joined
- Nov 4, 2012
- Messages
- 42
- Reaction score
- 0
- Location
- Somerset
- Your Mercedes
- C220 Estate 2004 2.2 Diesel
Hi
I posted recently concerning my sudden onset of poor MPG
I have now had the car on STAR at a recommended indy and the only fault found were 2 injectors out of spec, these have been replaced and a slight miss fire and pinking noise have gone, but she still puts out plenty of black smoke on heavy acceleration and will only do 32mpg the MAF is new and the values are good as well as the EGR.
when the MAF is disconnected I can easily get mid 40's - 50mpg with good power and very little smoke,
The reduction in MPG happened at sometime during a 3 day period when I was commuting only 4miles to work, I only noticed it on my normal friday night 200 mile trip home
So must be over fuelling with maf plugged in, but what could cause this without showing a fault on the Star ?
Please help
Jaz
I posted recently concerning my sudden onset of poor MPG
I have now had the car on STAR at a recommended indy and the only fault found were 2 injectors out of spec, these have been replaced and a slight miss fire and pinking noise have gone, but she still puts out plenty of black smoke on heavy acceleration and will only do 32mpg the MAF is new and the values are good as well as the EGR.
when the MAF is disconnected I can easily get mid 40's - 50mpg with good power and very little smoke,
The reduction in MPG happened at sometime during a 3 day period when I was commuting only 4miles to work, I only noticed it on my normal friday night 200 mile trip home
So must be over fuelling with maf plugged in, but what could cause this without showing a fault on the Star ?
Please help
Jaz