I have just put my 1990 xr3i cab H reg back on the road after being stood for 6 years.

Its very tappy i no this is commen, have changed the oil but im thinking of doing 500 miles in it then changing it again and using a flush in hope that it runs abit smoother, will this work??

Also it does like going slow it jumps and misfires, have changed plugs and leads, its a little better but still not good. Could it be old fuel still in system and just needs more miles put on it......

HELP PLEASE!!!!