So just an update but I got this fixed in the end by cleaning the injectors, rather then cleaning each one in turn I pulled the tank off and fabricated an airtight connection between a can of carb cleaner ( colt brand ) and the fuel line using a wine bottle plastic cork ( cut to fit ) and the carb cleaner plastic straw ( drilled through the cork with a small drill ) on the end of the carb cleaner, and started the engine while pushing down on the carb cleaner to pressurise the fuel system …I ran it for about 5 mins on the carb cleaner ..engine was a bit rough running on the carb cleaner but it ran okish..I then let it sit for 20mins to help dissolve anything it came in contact with..I then replaced the fuel tank and fired it up again, once the fresh fuel got pulled through it was 90% fixed with no rough idle ..i’ve added some fuel injector cleaner into the tank now and will run that for a while to hopefully fix it 100% 😀
So just an update but I got this fixed in the end by cleaning the injectors, rather then cleaning each one in turn I pulled the tank off and fabricated an airtight connection between a can of carb cleaner ( colt brand ) and the fuel line using a wine bottle plastic cork ( cut to fit ) and the carb cleaner plastic straw ( drilled through the cork with a small drill ) on the end of the carb cleaner, and started the engine while pushing down on the carb cleaner to pressurise the fuel system …I ran it for about 5 mins on the carb cleaner ..engine was a bit rough running on the carb cleaner but it ran okish..I then let it sit for 20mins to help dissolve anything it came in contact with..I then replaced the fuel tank and fired it up again, once the fresh fuel got pulled through it was 90% fixed with no rough idle ..i’ve added some fuel injector cleaner into the tank now and will run that for a while to hopefully fix it 100% 😀