Help - keeps flooding when cold since new cam

[verysideways]

Oh lordy, where do i start. Well, i bought this beautiful 450 a couple of months back and i suspected she needed a new cam, so i took her to my favourite mech and he checked her over. New cam, new rad, sports exhaust (well, sleeved), and various sundries later (£2k) and she was a dream. But within a few days of using her every day she flooded on a cold start.

Anyways, i started with a new ecu coolant sensor (an intermotor part) but had to clean the black (with soot) plugs first. Then she ran like dream for another week. Same problem.

Then got a new ecu coolant sensor from Racing Green (much better!) and she ran like a dream for another week. But then this morning she coughed and spluttered like crazy and i could smell the fuel coming out the pipes!

Dammit, what the h*ll is wrong??? I can't believe the ecu sensor's gone again, i reckon maybe the new cam is requiring less fuel than the standard one (which was knackered when it came out), so whenever i drive the car the plugs get coked up and then after a few days/miles when i try and cold start her the plugs don't wanna play ball because they're covered in soot.

Whaddya reckon, could i be on the right track or am i overlooking something fundamental?

Sorry for the long post, but i am rapidly reaching the end of my tether

>> Edited by verysideways on Wednesday 15th March 19:56

[TVRtoe]

Check the air flow meter.
Reset the ECU to its default map by unplugging the connector, then plugging it back in again. Failing that, connect a diagnostic unit into the loom, there may be an error code to point you in the right direction.

[verysideways]

More investigation, and a chat with a bloke called Mark at Thames Valley Racetech, and it could be lambda sensors, air flow meter, or someone incorrectly setting the timing on my new cam when it went in.
This made me think about having a look at the dizzy to make sure it wasn't loose or anything stupid like that, and i noticed a bit of melted pipe. Turns out that the vacuum advance pipe is completely blocked by a melted section, so i've had NO vacuum advance at all!
I'll get a new pipe tomorrow and let you know...

[v8 racing]

Before you go and get a bit of pipe trust me it will run much better with it blocked or removed! if you have gone for another cam i dont know which one you have had fitted but if it is a more sporty cam you will need a fuel chip to componsate, it might only be running a little bit richer but over a period of a week or so it will be enough tosoot the plugs up, whoever fitted the cam should be able to tell you what fuelling it will require

[verysideways]

Mark Adam's Tornado chip perhaps?