Need some help / ideas

[Chrisx88]

Guy brought me a challenger with twin 787. Previous tech tried doing carbs, dunno exactly what but i have about 15 carbs. ALmost all are junk and rusted.

Rebuilt 2 carbs for one engine, runs mint. Working on other engine, idles decent maybe a little high. Give it gas half to full throttle and it hangs and just revs out and wont come down unless i put it into neutral. Ive gone through these carbs over and over, adjusted the accelerator pump. Rave valves move freely.

I think im ready to tell him to buy a new set of carbs because these are fkn junk.

I had this same set of carbs onto 1st engine and it did same thing.

Any ideas / input??

[Chrisx88]

Edit:

Took down to boat launch. Put in water and let them run. Thing runs mint when in water. Waiting on a throttle cable and will water test it.