SC injection leak - advice please!!
 

I've got a minor bit of fuel wetness on the top of 1 injector just below where the fuel line screws onto it. It appears the injector sits in an o-ring. How is this removed from the intake pipe(engine in car - right rear cyl so access is good.)

Could this cause a very slight backfire - I mean slight, at cold start up. Doesn't happen warm. Idle is up/down for 45 secs until warm, then settles down to a fairly even 950 rpm.

Thanks!

"reseat" the injector connection and the leak should go away. I'd take the injector out and try to clean the mating surface too. With a vise-grip and rag, clamp injector and pull straight up. You could take line off first.

Backfire at startup is common.