Goosehunta
Recruit
- Joined
- Jun 1, 2020
- Messages
- 3
Hi. New here to this forum.
i am looking for some advice and guidance on a issue I have with my engine.
Boat is a 1985 or 1986 Sport-craft OSFF 222.
engine is a 1985 omc seadrive 2.5. (Vro is deleted)
symptom is engine starts great and idles perfect. Get wot and get on plane and run about 5k rpms (sometimes a little more) and will ride there for several seconds sometimes a couple minutes then the rpms start to slowly reduce to about 3k. If I leave the throttle at wot and keep cruising after a minute or so the rpms will slowly raise back up. But it may only make it to 4K or 4500 then does it again.
it seems to be a fuel starvation problem. I have been chasing for a few months now. So far I have done the following:
new fuel lines
new fuel pump (non vro pump pre mixing)
rebuilt and cleaned carbs with OEM kits
new filter water separator
also done due to other issues:
new timer base (cdi brand)
new stator (cdi brand)
new regulator/rectifier (cdi brand)
new power packs both (cdi brand)
sync and link done
timing done.
new water pump (OEM kit)
plugs and wire (OEM)
what else could cause the problem.
I know it’s said to be a bad idea to install an electric fuel pump due to fire hazards but I’m really thinking about installing one temporary to try and rule out a fuel starvation situation.
i am looking for some advice and guidance on a issue I have with my engine.
Boat is a 1985 or 1986 Sport-craft OSFF 222.
engine is a 1985 omc seadrive 2.5. (Vro is deleted)
symptom is engine starts great and idles perfect. Get wot and get on plane and run about 5k rpms (sometimes a little more) and will ride there for several seconds sometimes a couple minutes then the rpms start to slowly reduce to about 3k. If I leave the throttle at wot and keep cruising after a minute or so the rpms will slowly raise back up. But it may only make it to 4K or 4500 then does it again.
it seems to be a fuel starvation problem. I have been chasing for a few months now. So far I have done the following:
new fuel lines
new fuel pump (non vro pump pre mixing)
rebuilt and cleaned carbs with OEM kits
new filter water separator
also done due to other issues:
new timer base (cdi brand)
new stator (cdi brand)
new regulator/rectifier (cdi brand)
new power packs both (cdi brand)
sync and link done
timing done.
new water pump (OEM kit)
plugs and wire (OEM)
what else could cause the problem.
I know it’s said to be a bad idea to install an electric fuel pump due to fire hazards but I’m really thinking about installing one temporary to try and rule out a fuel starvation situation.