Can plugged up injectors be cleaned easily or is this something I need to have done by a shop, or do it just have to replace them. I have fuel now and my 142 starts but runs like crap, starts pretty good initially then dies when I try to give it gas. As if it's not getting enough from all injectors. Feels like the cold start injector kicks in for a bit and things run well, once it stops is chuggs and sputters.

Put in a new set of plugs for good measure, two of the old were black the other were clean.

what else should I be looking at, I'm guessing more fuel issues. when I parked it everything was working well (dizzy, timing etc...).

Chris