hi guys.i have a '95 2.5v6 cdx which will never start on the first attempt when cold.on the second attempt it always starts.any ideas?

also the other problem i have is the car will hesitate on acceleration up untill say 4000 revs then the power will cut back in.so far ive changed plugs, all filters cleaned icv and checked breather hoses for leaks/gunk. there are no codes stored in the ecu and the management light has not come on. this is driving me crazy any help MUCH appreciated!!