Josephmast94
Cadet
- Joined
- Nov 14, 2013
- Messages
- 12
I have been battling this problem for some time now. my port side motor struggles to get above 30k rpm at wot, it shakes the entire boat. if i pump the throttle it will get up to around 35k but immediately fall back to 28-30k. here are some things I have tried.
compression is good, all 4 cylinders around 150
spark test, spark jumps a 7/16 inch gap and has new plugs
changed fuel filters including f/w seperator, inline, "f" filter, and vst filter.
gas is good because the other motor runs just fine off same tank.
switched injectors with the starboard side engine.
fuel pressure is good, 45 before starting with ingniton on then 37 at idle.
also the bottom cylinder is turning the plug black and its wet with gas. the engine shakes a little at idle compared the the other but seems to idle just fine around 750 rpm other than that. thanks in advance for any help!
compression is good, all 4 cylinders around 150
spark test, spark jumps a 7/16 inch gap and has new plugs
changed fuel filters including f/w seperator, inline, "f" filter, and vst filter.
gas is good because the other motor runs just fine off same tank.
switched injectors with the starboard side engine.
fuel pressure is good, 45 before starting with ingniton on then 37 at idle.
also the bottom cylinder is turning the plug black and its wet with gas. the engine shakes a little at idle compared the the other but seems to idle just fine around 750 rpm other than that. thanks in advance for any help!