YachtForums.Com - View Single Post - Mercruiser 454 flatspot at 3200-3800 RPM

Capt J · 09-27-2011, 07:15 PM

Check total timing at rpm's, could possibly be valves floating (weak springs), could be the carbuerator isn't getting vaccuum and the secondaries aren't opening.......

09-27-2011, 07:15 PM	#2 (permalink)
Capt J Senior Member Join Date: Jul 2005 Location: Fort Lauderdale Posts: 4,274	Check total timing at rpm's, could possibly be valves floating (weak springs), could be the carbuerator isn't getting vaccuum and the secondaries aren't opening.......