Bongo Fury

Changed the glowplugs a couple of months ago due to very difficult to start and hey presto back to being perfect again until yesterday.Just wouldn't start..felt like batteries had gone. Thought I'll try it one more time before phoning breakdown and started totally perfectly again..really weird. Any thoughts would be appreciated.! Del

was it clicking,as that could be starter contacts

Make sure you battery terminals are clean tight and well greased, then check where the earth connects to the body again to check clean tight and protected .