streetdoc432
Member
- Sep 16, 2010
- 114
- Boat Info
- 1988 Sundancer 270, Onan genset, camper canvas, marine a/c, Lowrance HDS-5
- Engines
- 4.3 twins with Cobra drives
I have a 1988 270 with twin 4.3 & cobra drives. When my engines are in neutral & I rev them up, the will hit redline, when I'm under way, my starboard engine won't get above 3200 RPM, port engine runs up to 3900 under way.. What gives? Throttle cable moves like its supposed to, engine doesn't run warm or miss, choke not stuck, carb clean, new 8mm wires & plugs. Any suggestions? Thanks in advance