AO Platinum Member
Join Date: Feb 2002
Location: The land that Time forgot
It sounds like it's running weak. It needs to be richer when it's cold.. and moist air usually complicates things because it's harder to set alight.
Have a look at the plugs to see if they're white or look like they've run too hot (dry, white crusty residue).
It'd be interesting to see how much petrol comes out of the fuel pipe when you turn the ignition on. I have no idea how much you should get but "less than normal" would suggest a weak fuel pump (maybe internal tubes split?).
Running well on gas excludes ignition or sensor problems.
No bullets for Chaingun..