Just another Moderator
Join Date: Sep 2005
Location: New Westminster, BC
Thanked 430 Times in 408 Posts
Rep Power: 10
If the engine revs fully without the cable attached at the injector pump, that would be your problem. Keep in mind that the limited throw of the cable will be at the controls end, unless it's purely cable resistance. This, however, sounds unlikely given that the throttle won't stay put ordinarily.
You can make a quick and easy throttle cable tensioner with a slit piece of small hose and a couple of hose clamps - one end tight to the outer jacket, the other adjusted over the sliding sleeve for correct tension.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)