Injector o ring question

If the auto parts pressure kit doesn’t have an adapter fit your big radiator. You can take out a plug and plumb an elbow into the lower radiator steel tube, using reducers. Then use any air pump. Bicycle pump, or small 12v air pump. I have a 1/4” ball valve drain on mine. Adapted a mini 12v compressor. Cut the end of hose off, adapted the hose size up to fit. Works great. Shout out to @BoxCarKidd for the idea.

 

Any pics off the injector tube

 

@Truck engine machinist? That's the only name that I can think of off hand.

 

That’s the one. Thanks. I haven’t seen him for awhile in here.

 

Good lord. Is it just me or is there a copper ring cut in there?

 

From that last pic. You can see no compression has gotten by the tip. There would be black marks there, and the injector would be dirty above and below the lowest o ring. In the cup at the bottom, it"s shiny all the way around. No leakage there