car hard to start, somtimes running on one rotor
 

hi, im starting to have problems with my fd,
its sometimes hard to start, running on one rotor for about 5-10seks
it doesnt blow white smoke, or smell like coolant, but it does smell like fuel, it allso gets a pretty strong fuel smell during 50%throttle to full woot
could it be a leaking injector? my plugs are pretty new and they are brown. but there is a pretty good carbon buildupp on them, an only the lower plugs, the other ones are fine (all ngk 9s)

and the car is a pain in the ass to start when it is hot. need help
only need the car to stay reliable to about october(winter) im rebuilding the engine then anyway

and, if it is a coolant leak, is there anyway to delay the coolant seals from failing?