EdButler said:When you start a car, it needs to run very rich - i.e. running with the choke. The pump increases the pressure differential on the intake manifold so that the engine 'sucks' in more air (oxygen) for the cold start combustion. More fuel needs more air. After a little while it switches off automatically. Hope that explains it
What worries me is WHY its blowing the fuse!! Glad you isolated it though mate![]()
Cheers EdButler, got it, but oh for the days of the enrichment jet and a choke flap