89b2200
+1y
Best way is to pull the fuel rail and injectors. Then with a 9V battery, energize the injector while spraying some carburator or throttle body cleaner through the opening. You have to get new injector seals when you put them back in.
Or you can send them out for cleaning and calibration to a calibration shop.
It is also possible your engine computer might be getting a wrong temperature signal from a bad engine temp sensor.