Connector tube question

[Marcus2000monster]

In the middle of installing new injecotors currently. I'm curious what this buildup is on my connector tubes? How do you get it off?

[Dieselfuture]

It's on outside of oring, so must be just dirt. Wire brush should do it. Maybe tape off where oring is with some tape so you don't damage it. 

[Mopar1973Man]

Normally, I take a can of brake clean and washout the connector tube holes in the head to ensure there is no debris in the head to mess up the o-ring sealing. Then clean up my connector tubes with a wire brush to remove the crud that might have formed. Just remove the o-ring its easy...

Edited February 18, 2018 by Mopar1973Man

[Marcus2000monster]

50 minutes ago, Mopar1973Man said:

Normally, I take a can of brake clean and washout the connector tube holes in the head to ensure there is no debris in the head to mess up the o-ring sealing. Then clean up my connector tubes with a wire brush to remove the crud that might have formed. Just remove the o-ring its easy...

I used some carb cleaner because hat all I had and scraped off the rest with a sharp blade. I didn’t notice as much power gain as I thought I would is this because of no added timing like a box would do?