I recently had the cam belt changed on my 1997 Rover 214. Since it came out of the garage it was running very sluggish and barely doing 30mpg. I took it back to the garage and they checked the timing, which they said was ok. They also checked the exhaust system for a block which there wasn't. Finally they washed out the jets (petrol injectors?). It did run much better after this but I think it has now become more sluggish, although not like before but the petrol consumption is still the same, around 28mpg which is way to low for this car (8valve).
Any ideas?
Thanks S.T.