Stick your nose in your exhaust pipe or pipes and sniff. If you cannot smell fuel prime hell out of it with the lever up for the full shot, the throttle prime pump in the carby may be half stuffed.
47's set up for very cold conditions used to have a separate electric prime pump mounted on the rear cover plate of the engine which used to inject raw fuel, heaps of it, straight into the intake manifold after the carby.
If you can smell fuel and it does not go, then pull your rear spark plugs out and check that there is no condensation on them. 9C OAT is a good temp for that to happen, with just a tad of moisture amount. if there is then pull them all out, cycle the donk a bit with fuel (Mixture) off throttle wide open, clean the plugs, re-install and prime again.
If it still does not go and its a G5 with the little red shower of sparks gadget right behind the firewall on the stbd side, then get someone to show you which two wires to pull off so that it may start on the mags alone. from memeory I think it was the L and R labelled ones.
sometimes the shower of sparks makes good noises but alas there's no one at home.
Usually its more fuel and some.
it may be nothing to do with the cold as Ringer suggests. if it is flooding, fuel (should have been mixture) off and try a flooded start. fuel dripping out is a clue here.
Last edited by topendtorque; 25th May 2009 at 11:23.