Is your primer bulb sucking in air at the joins which allows the fuel to siphon back down the fuel line? sounds like it. it should hold a vacuum and stop this, I refitted mine with some silicone sealer in the ends and stopped the fuel running back, until I started running on veg and the engine hunted in cold weather then I swapped the primer bulb for an electric facet pump to pump the thicker veg oil until the engine warms up.addo wrote:
Halfway through that distance, parking nose uphill is at your peril! Done the silly thing twice.
regards Nigel.