It only started happening after i left your place that day.Went to change from gas and it played up.I changed the fuel filter about 4 months ago.

Sorry about the sugar in the fuel tank

Change the filter again anyway, then get the fuel pressure checked

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Ha ha I will do that again.Better check that locker now

Bit of a "Wild card" ... but can happen ... would have drained out a bit and see if the Lawn mower will run it

Cheaper start ... than going straight into electrical & mechanical faults