I had the same problem on my '82 cis. You simply take out the injector being carefule not to break any o-ring seals unless you have new ones on hand(which cost almost nothing from places like FCP-highly recomended) and you blow compressed air through them. Any mechanic will do it fo a six pack or use air from where you fill up your tires. Also when you do this you might as well replace the fuel filter which is only like ten bucks from FCP. This way you eliminate any furthur clogging of the injectors. BTW the mostly likely culprit of dirty injectors is a clogged fuel filter. When your done throw some Chevron Techron (dont settle for imitations or STP junk) into a full tank of gas and dont let the tank get below 1/4 for a while. My car is living proof that this method works AND its a cheap inexpensive yet prevetative maintanence kinda of way to trouble shoot. Take care!