Engine Mechanical problem 1997 Chevy Suburban V8 Four Wheel Drive Automatic 97 chevy 5.7L 350 I needed to replace intake manifold gaskets. Removed it two years ago. I had thoroughly cleaned the intake manifold and its surfaces. I have no garage, live in the hot New Mexico sun. So I waited for a moderate day but hurt my back so two years went by. I had put a clean white towel over engine block and was laying the manifold back in place until the last day. Long story/short, some New Mexico windstorm had blown a little dust down into the fuel delivery ports (for lack of better term). This is a high mileage vehicle so I do not want to pull the heads but I need ideas how to get as much dust as possible back out of those ports even though there is very little. I plan to blow them out with air compressor. The perhaps shove some rags with carb cleaner on them and wipe around. Any other ideas? Or should I just give in and pull the heads? Even if I pull the heads will I be able to access those square ports entirely? Also, can I assume it is safe to dunk the whole fuel injector assembly and injectors in carb cleaner? Thanks in advance.