Cold Start Problems
 

I am having trouble starting my 3.3 when it is cold, it winds over for a while and won"t fire after leaving it for 5 minutes it usually starts and runs fine.
I have replaced the switch in the cover are there any other tests I could try?
Thanks

What Year!

Could be a fuel priming issue. When its cold try turning on the key to "run" for 5 seconds before trying the ignition. If that doesnt work try first turning the key to run for 5 seconds (not to "start" yet) then off, then to "run" again for 5 seconds, then try the starter.

Could be caused by a bad accumularot (if you have one) or dirty/tired fuel check valve allowing fuel to drain back to the tank.