Motor wont stay running.

[ripping_lips]

Was out fishing and the motor started running like crap. Ran fine when we left the dock. Got it back and found water in the seperator. Drained tank, vst, fuel water seperator, eventually replaced fuel water seperator. It never threw an alarm for water until after I replaced it. Got everything drained and put 15 gallons ethanol free gas 90 octane. Motor fires up just fine but won't rev up and dies out after about 5 to 10 seconds. I've cleaned out the vst tank, cleaned filter on the bottom of it. It had some sand but wasn't plugged. Replaced the low pressure fuel pump for ****s and giggles. The old 1 didn't look bad or dirty but I had 1 on hand so threw it on for peace of mind. I do have spark on all 6 plugs. It's acting like it's starving for fuel though. Any ideas or recommendations on what to check next? If needed I can upload a video to YouTube and link.

1997 nitro savage 884
97 mercury 150 efi 2 stroke
Serial OG570155

 

[ripping_lips]

Here's a video

 

[92 Nitro 190dc Owner]

Based on my experience, 1) closely examine your fuel lines for cracks by flexing the hoses. Otherwise, you may not see them. They won't leak fuel, but will allow air to enter your fuel system. 2) When you squeeze the primer bulb, does fuel leak out of any of the carbs? That indicates a needle valve not seating properly. 3) Is there a filter on the fuel line or on the outboard? Check that for clogging. 4) If none of the above, replace the fuel line from the fuel pump to the motor with clear tubing. If there are air bubbles in the clear tubing, then there is a air leak. You will have to examine all fuel components to isolate the air leak.

 

[kdcashion57]

Was out fishing and the motor started running like crap. Ran fine when we left the dock. Got it back and found water in the seperator. Drained tank, vst, fuel water seperator, eventually replaced fuel water seperator. It never threw an alarm for water until after I replaced it. Got everything drained and put 15 gallons ethanol free gas 90 octane. Motor fires up just fine but won't rev up and dies out after about 5 to 10 seconds. I've cleaned out the vst tank, cleaned filter on the bottom of it. It had some sand but wasn't plugged. Replaced the low pressure fuel pump for ****s and giggles. The old 1 didn't look bad or dirty but I had 1 on hand so threw it on for peace of mind. I do have spark on all 6 plugs. It's acting like it's starving for fuel though. Any ideas or recommendations on what to check next? If needed I can upload a video to YouTube and link.

1997 nitro savage 884
97 mercury 150 efi 2 stroke
Serial OG570155

This is very basic, so if already done, please excuse. You may be chasing your tail. Once a plug is fouled in a two stroke, it is ruined, no amount of running will clean it and make it work. So if you haven't done it, replace your spark plugs.