simmonatural
Cadet
- Joined
- Jul 25, 2012
- Messages
- 9
Hi all,
I had hoped I would be posting on the fishing forums by now but apparently, I need more help or at least an idea of what I need to do next
1992 VJ150exenc (with OMS active)
Initial symptom.... falling on face while on plane, engine stalls, pump primer bulb, starts up, back on plane then fall on face again, and again then, runs fine with no issues. (got symptoms to repeat on subsequent solo trips)
No longer family friendly, start to investigate.
Compression good in all 6 cylinders.
Rig is 20 years old and no plans for new boat or engine so, new OMS (including pulse valve (blue)), new fuel lines, new sending unit, check anti siphon valve, not there...(that's ok from my standpoint...all uphill feed) tank vent, clear, pickup tube screen, clear. Install new Racor to replace old sierra water separator. Service oil tank with new oil line, gasket, primer bulb.
So, fuel bracket back in place, everything is tightened up.
Run new install procedure with test tank w/ 50:1 mix, reconnect oil line to inlet with fresh oil right at the tip.
Start engine...wait to hear no oil alarm, don't hear it. Instead, engine stalls. Pump fuel bulb...(5 to 7 times, feels like there should be more fuel present in the line), engine starts back up and stalls after carbs are emptied. with a lot of smoke too because oil pump is pumping.
Raise test tank above engine and she runs and runs and runs, smokier than usual because oil is pumping, and I am running 50:1 premix in test tank resulting in a rich mix.
Please excuse the length of this post, I want to make sure you guys have all the info...
Seems like no vacuum from the pump to draw fuel through the system .(maybe 8 ft of line)
I have seen the oil level drop in the oil tank.
Hooked it up to below deck tank and runs out of fuel. (same as test tank when slightly below the level of the fuel intake)
Fuel is readily available through main fuel line.
No fuel supply restrictions, new pump, new pulse hose and fitting.
What could be causing the pump to not pull fuel?
I am stumped, hoping I didn't get a bad pump.
Any help is always appreciated.
I had hoped I would be posting on the fishing forums by now but apparently, I need more help or at least an idea of what I need to do next
1992 VJ150exenc (with OMS active)
Initial symptom.... falling on face while on plane, engine stalls, pump primer bulb, starts up, back on plane then fall on face again, and again then, runs fine with no issues. (got symptoms to repeat on subsequent solo trips)
No longer family friendly, start to investigate.
Compression good in all 6 cylinders.
Rig is 20 years old and no plans for new boat or engine so, new OMS (including pulse valve (blue)), new fuel lines, new sending unit, check anti siphon valve, not there...(that's ok from my standpoint...all uphill feed) tank vent, clear, pickup tube screen, clear. Install new Racor to replace old sierra water separator. Service oil tank with new oil line, gasket, primer bulb.
So, fuel bracket back in place, everything is tightened up.
Run new install procedure with test tank w/ 50:1 mix, reconnect oil line to inlet with fresh oil right at the tip.
Start engine...wait to hear no oil alarm, don't hear it. Instead, engine stalls. Pump fuel bulb...(5 to 7 times, feels like there should be more fuel present in the line), engine starts back up and stalls after carbs are emptied. with a lot of smoke too because oil pump is pumping.
Raise test tank above engine and she runs and runs and runs, smokier than usual because oil is pumping, and I am running 50:1 premix in test tank resulting in a rich mix.
Please excuse the length of this post, I want to make sure you guys have all the info...
Seems like no vacuum from the pump to draw fuel through the system .(maybe 8 ft of line)
I have seen the oil level drop in the oil tank.
Hooked it up to below deck tank and runs out of fuel. (same as test tank when slightly below the level of the fuel intake)
Fuel is readily available through main fuel line.
No fuel supply restrictions, new pump, new pulse hose and fitting.
What could be causing the pump to not pull fuel?
I am stumped, hoping I didn't get a bad pump.
Any help is always appreciated.
