Hey everyone
im itching to get back to the UK and take my trusty rusty XJ out for a spin, but before i left i was having problems and id like to try and get to the bottom of it before i start thrashing it like a loonie again.
at high speeds (80-100) for extended periods of time it would die, almost asif running lean, during this time if the throttle is closed and opened gradually the bike will recover and run normally up to about half/3-4 throttle, on the first incident it cut out and would not run right until i had left it to stand for about 2-3 minutes, after which it appeared to be fine (by this time i was riding through the town, not at speed).
i also experiance a lag when opening from part to full throttle at speed, it will cut back before running up to full power and takes approximately 1 second from it cutting to recovering, i have done a plug chop and to no avail, spark plugs look like overcooked cornflakes which (as i understand) is good.
it is running a motad 4-1 system, everything else is stock, theres plenty of oil in it and its never done it to me before up until a few months ago, carbs were also balanced a few months ago
as always any thoughts appreciated gents,