Hi there guys i need some help with my car, i have a w plate omega 2.0 16v auto and it has started to miss fire when she's cold, as soon as she warms up she runs Perfect. The trouble started after i had a new front section of my exhaust fitted, the front pipe has a cat and a lambada sensor. The mechanic told me that i had a small crack in my manifold but the car ran fine for a few days after the change but suddenly the miss fire appeared. I have changed the plugs and leads but it's still the same when cold but Perfect when warm, could the crack be at fault? could there be to much air being pulled in or blown out? then as the manifold warms the crack seals up and the car runs fine.
Please help as i have an mot in 7 days.
Many thanks,
Shaun.
Please help as i have an mot in 7 days.
Many thanks,
Shaun.