hey guys, stripped the top half of my engine this week, replaced the valve stem seals, water pump, cambelt etc etc as i was getting some smoke.
All went very smooth and the car started first time, however it is misfiring, i tried the plugs and checked the injectors and rail, they seem to be fine, when driving the car is fine aside of a loud screamy/whistling noise, but on idle its very chuggy aswell and i can hear some light but constant backfiring through the exhaust.
The whistling noise is coming from the rear of the engine bay around the throttle body area, i can hear air escaping but im unable to find a leak, im almost certain there is a leak somewhere in the compressed air system as i can hear the rushing air and the whistle.
Any tips or previous knowledge would be majorly appreciated! cheers all