@wwdwgs
I would agree with you about having the injectors cleaned and tested by a injection pump and fuel injector shop, the majority of these places do Diesel which is their main business. They do a very good job of it, but do not expect to get a over night job from any of theses places... they can take up to several days to weeks to do the work as they are always in demand. The will tell you also if the injectors are bad and cannot be repaired as well. This all being said they may not even clean or repair your fuel injectors for the Honda engine, myself... I do not know. Most auto (gas injectors) are not worth their time, as the cost of this service may exceed the cost of a new injector. But there is only one way to find out is to call a shop. In Omaha, NE such a shop is named Diesel Specialties.
While working for the Federal Aviation Administration, they had sent me to a 2 week class in Dallas, TX. It was for a Stanadyne/Bosch fuel injection pump and fuel injectors. It was a relatively easy class to go through explaining how to tear apart pumps and injectors, soaking the parts in a large sized ultrasonic cleaner overnight. The next day you would measure and clean out any small holes like the injectors have on them. If it was still dirty, you would run them through a second cycle of ultrasonic cleaning. Then you would pressure test the injectors checking their spray patters and if any drips would appear. Also the solenoids would be tested to hold the spray on the injector. The injection pumps took the longest and everyone would rebuild several different types of pumps. It was a enjoyable class, well taught and gave me enough experience to do this work for the engine generators we maintained. Although were I am at, we only had diesel engines no gasoline engines.
