Can any one help me with my ford Sierra sapp Cosworth rep. It has the 2.0 8v dohc engine and the last while it feels very slow it has an exhaust system and new K&N air filter was serviced about 2months but still slow can any one help?

 

Brakes sticking, clutch slipping, exhaust blocked, sensor down, fuel filter blocked.

Could be anything, can you give anymore details?

 

i dont know anything abouit them,but would be worth seeing if your airflow meter is working .plug it out and see if it drives the same and you will know if its not working

 

I've had a few of these, some I had were pretty quick and suprised me while a couple of twinkys I had were dead slow. Maybe u could tell us more about the problem?

 

Well it's abit puzzling to me. Got the car checked by a mechanic cause thought it was over fueling as there was a very rich smell of petrol but all he found was a small fuel leak in the engine.
Have checked and replaced the plugs
New oil filter and oil
New K&N filter.
Have checked brakes there not sticking
Have changed the petrol tank as old one had a leak clean filter when changing,
Air flow meter is working as pipe fell of one day and the engine started revving very high on idle,
Exhaust is stainless steel, but manifold is standard.
Would it maybe injectors?