Cars going into garage on Sat....
 

Got a few probs with car, Just so I don’t get ripped off at the garage, what am most likely looking at.

• Rough idle
• Running rich with black clouds bellowing out the back on boost, fuel use has nearly doubled getting 150miles to a tank instead of 280.
• Occasionally when accelerating car will hit 2000rpm cough splutter and struggle like **** to get past 2k for a minutes or so and then seems to clear, if car is left to idle for a while it will do the same again.

Car had a GEMS so the MAF and Lambda aren't utilised.



Cheers,

Why should you get ripped off? sounds like spark plugs running rich (map or lamda or both)