Hi everyone i am now the proud owner of my first cosworth! the problem i have is sometimes when im driving along it starts to missfire and then goes back to normal im any rev range, sometimes it does it when im sat at a junction and sometimes it cuts out and then when i go to start her it takes ages! please help as im new to the cosworth scene!

Its standard apart from mongoose zorst, pipercross filter and a group a actuator!

Ive changed the plugs which are gapped to 0.65mm, leads,rotor arm, dizzy cap, phase sensor and ignition module up to now!

Any help will b great! cheers!