Problem Got Worse

[alex c]

i wonder if any technical gurus can give me any pointers.

I posted on here a few weeks ago asking about a mis fire. I changed the plugs leads coil pack and had a full service done. The mis fire continued but it would go for days without doing it. I have taken it into a garage today where he has changed the Crank sensor and the cam sensor. After he had done this the car was undriveable. Ran ok at idle but as soon as it was revved it started misfiring really badly. Mechanic is scratching his head as the last time he ran a diagnostic check nothing came up. There are no engine management lights on the dash still.

Any pointers would be really appreciated as i need it sorting quickly. Even any checks i could have done to narrow things down would help.

Cheers