Boats For Sale:
1990 SN Fuel Starved |
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1987don 
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Joined: July-08-2014 Location: derry nh Status: Offline Points: 11 |
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 Topic: 1990 SN Fuel StarvedPosted: August-05-2014 at 1:00am |
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had similar issue last year with my 87 sn ...fuel line was collapsing from being ruined by ethanol in the gas. I replaced the line from the top of the tank to the fuel ands water separator and then from there to the carb...problem solved
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ezim
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Joined: May-19-2008 Location: United States Status: Offline Points: 12 |
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Posted: August-01-2014 at 1:10am |
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If you haven't fixed problem, check fuel pickup tube in gas tank. Take apart and check the two screens at top of pick up tube. They get clog with debris.
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SNobsessed
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Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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Posted: July-14-2014 at 7:55pm |
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After that, try running boat with gas cap loose. It's rare, but the vent hose can get clogged.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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quinner
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Joined: October-12-2005 Location: Unknown Status: Offline Points: 5828 |
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Posted: July-14-2014 at 2:50pm |
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I would start by removing and inspecting the anti-siphon valve, if it's clogged up and restricted it will starve the fuel flow.
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calebcl
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Joined: May-02-2013 Location: Orlando, FL Status: Offline Points: 26 |
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Posted: July-12-2014 at 6:28pm |
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Co-Owner of that 90 ski here...last time the boat was on the water, it wouldn't die at full throttle while pulling a skier, but would die shortly after slowing back down to idle; as well as being starved when you gun it. What are the symptoms of the accelerator pump being bad?
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Caleb
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65 'cuda
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Joined: July-12-2005 Location: Cincinnati, OH Status: Offline Points: 1091 |
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Posted: July-12-2014 at 5:51pm |
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Pump,
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Bri892001
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Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Posted: July-12-2014 at 5:22pm |
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Hmmm... You'd have to see if it would hold the speed under load; like cruising in the water.
Wouldn't necessarily have to be with a skier. I'm just trying to figure out if it's just an accelerator pump issue, or a fuel flow/restriction issue. |
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astinespring
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Joined: October-10-2013 Location: Orlando Status: Offline Points: 42 |
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Posted: July-12-2014 at 4:47pm |
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Yes it is holding the speed in a fake lake situtation, not sure with a skier behind.
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Bri892001
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Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Posted: July-12-2014 at 4:39pm |
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What if you ease it up to higher speeds. Will it be able to hold the higher speed?
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astinespring
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Joined: October-10-2013 Location: Orlando Status: Offline Points: 42 |
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Posted: July-12-2014 at 3:48pm |
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my 1990 ski nautique with the PCM 351 is cranking and idling normally, but when we gun it, as if to pull a slalom skier out of the water, it just dies. You can hear the carb trying to pull a lot of air in, and it seems like there just isn't enough fuel to support what you're trying to do. We have just replaced the fuel filter/separator, thinking that was our issue, but apparently not. Just to clarify, the carburetor IS getting fuel. Help?
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