since i have been running my totally rebuilt engine in my 75 i have been plagued with a niggling running problem. when ridden at a steady speed and steady throttle, it hesitates and surges. now, all i have read up on concerning this , points to running lean.
here is a list of the things i have done to try to find this annoying :sensored: problem.
tank drained and dried, fresh fuel added . half a cup of metho added and sloshed round.
fuel filter replaced ( brass sinter type )and checked for flow.
fuel pump replaced, original had slightly perished diaphram.
carbs stripped and cleaned excessively. all rubber replaced, new air cut off valve, new Honda float valves. floats were floated in a jar of petrol to make sure they didnt sink. every nook and cranny in the carb bodies cleaned and blown out with air.
slides polished to within an inch of their lives. floats set at exactly 21 mil.
ignition ( C5 ) checked over for good connections and earths. new iridium plugs switched for new NGK stock type. ( resistor type as specified ) New NGK plug caps, run with and without the built in resistors.
to rule out the possibility of an ignition fault, i re installed the Dyna gear. coils and points replacement modules. still ran the same. worse actually.......
put the C5 back on.
switched the carb rack with the original set. still did it. put the rebuilt carbs back on.
in desperation, i switched the camshafts over. the ones in the new engine were a new pair i bought off ebay. i thought maybe they were mismatched. nope, still ran the same.
and then busted the :sensored: right hand side cover. :sensored:
it is driving me mad............... i am missing some thing. this most annoying, as i dont make mistakes.... :rant: :smilie_happy:
here is a list of the things i have done to try to find this annoying :sensored: problem.
tank drained and dried, fresh fuel added . half a cup of metho added and sloshed round.
fuel filter replaced ( brass sinter type )and checked for flow.
fuel pump replaced, original had slightly perished diaphram.
carbs stripped and cleaned excessively. all rubber replaced, new air cut off valve, new Honda float valves. floats were floated in a jar of petrol to make sure they didnt sink. every nook and cranny in the carb bodies cleaned and blown out with air.
slides polished to within an inch of their lives. floats set at exactly 21 mil.
ignition ( C5 ) checked over for good connections and earths. new iridium plugs switched for new NGK stock type. ( resistor type as specified ) New NGK plug caps, run with and without the built in resistors.
to rule out the possibility of an ignition fault, i re installed the Dyna gear. coils and points replacement modules. still ran the same. worse actually.......
put the C5 back on.
switched the carb rack with the original set. still did it. put the rebuilt carbs back on.
in desperation, i switched the camshafts over. the ones in the new engine were a new pair i bought off ebay. i thought maybe they were mismatched. nope, still ran the same.
and then busted the :sensored: right hand side cover. :sensored:
it is driving me mad............... i am missing some thing. this most annoying, as i dont make mistakes.... :rant: :smilie_happy: