i have an 83 srv 540 it is exellent shape. but, i was riding it and it blew up one side didnt hurt it thought just burned a hole in the piston. so i honed it and got new piston,gasket etc. and i got it back together and let it run for 20 minuites then i went out on the lake and just babyed it and it died within 5 min. i believe the oil pump isnt getting any oil to the left cylinder i would like to fix it and have oil injection still but for right now im gonna plug off the lines and run it mixed any thoughts on how to fix the oil pump or what might be causing this? by the way i have boysen reeds and its bored 40 over with a dg pipe with exhaust temp gauge.