Race City Injector

Glassic Boatworks Inc.:
I think #4 and #7 are clogged or not firing.
Power balance test on computer (killing spark) had no change in rpm’s of numbers 4 and 7.
During fuel injector disconnect test ( killing fuel to that cylinder) numbers 4 and 7 had no change in rpm either.
Compression verified great at 175-180 all 8 cylinders.
Engine is running 400-500 less RPM at WOT.
Let me know what you find.

Race City Injector: You are correct!