Hello everyone who offered suggestions regarding my fuel problems with my BMW in Paraguay...after weeks of slowly progressing through Argentina and trying different things, i.e. new coils and spark plugs...we arrived in Salta Argentina where the bike mechanic insisted the bike needed a new fuel pump...got trailered 300km to Tucuman where a new pump was fitted in 20 mins!! guess how much???....US$1200!! ouch!...however...BMW have agreed to reimburse me for the repair even though it was outside the UK and Europe.thanks to Luke at BMW Guildford...so...I am now in Bolivia...travelling high altitudes...4513metres above sea level...scary roads....but the bike is going well...even on Bolivian fuel!!! Once again, thanks for all your suggestions...see you on the road one day!!