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Thread: Air sucking sound/stall?
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06-05-2013, 10:28 PM #11
mine had two injectors on the top of the intake and mine made a hissing noise when it bogged down..i noticed when it would go above 1500 rpms it would drop to one injector that was spraying fuel and when it would bogg it switched over to the other injector to spray fuel..if i were you i would replace your fuel filter and see what happends
2004 Outback Blue/white w/5.7 indmar 350, Direct Drive
Rockford fasgate cabins
Rockford fasgate 500w amp (cabin) and a kenwood HU (kmr700u)
Exile XM7's
Exile Harpoon
Exile ZLD
Polk 10in sub (2)
Polk P330 amp (subs)
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06-06-2013, 08:05 AM #12Senior Member
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I noticed that you have a V-drive. I think all of those suck to some degree.
In your second video, the pump has the louder sound at the end at the pressure has built up. While it's not normal that the pump would get louder, it is normal for the sound to change. Your pump may be wearing unusual to cause that sound. It may be about to break or it may last for 1000s of more hours.
Not sure about that sucking noise.1997 MasterCraft 205
2008 Moomba Outback
1999 MasterCraft Sportstar OB
1992 MasterCraft 205
1999 Malibu Response LX
1987 Marlin Magnum Skier
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06-06-2013, 08:25 AM #13Senior Member
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Re: Air sucking sound/stall?
That my friend sounds like good old fashioned vapor lock. Well, it sounds like tye engine isnt getting fuel. Now whether thats vapor lock or not I dunno. Does this only happen when you have already been running the engine or will it happen on the first crank of the day?
2013 LSV
2005 LSV - SOLD
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06-06-2013, 10:44 AM #14Senior Member
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Re: Air sucking sound/stall?
Lol... Sounds like a bad pump or filter I'd be replacing both.. Better to be safe and not ruin a weekend or having to get towed..
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2002 Moomba Mobius LSV - Sold
2006 Moomba Mobius LSV - Sold
2017 Moomba Craz - Enzos, Lead
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06-06-2013, 01:44 PM #15
Sounds to me like the butterfly is not opening in the throttle body. Take a video with the camera pointing straight down into the throttle body. Or just try and open the butterfly valve. It sounds like it is starving for air. Similar to a carb choke getting stuck closed.
Kraig - 2010 Outback V
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06-06-2013, 09:42 PM #16Member
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That my friend sounds like good old fashioned vapor lock. Well, it sounds like tye engine isnt getting fuel. Now whether thats vapor lock or not I dunno. Does this only happen when you have already been running the engine or will it happen on the first crank of the day?
Lol... Sounds like a bad pump or filter I'd be replacing both.. Better to be safe and not ruin a weekend or having to get towed..
Sounds to me like the butterfly is not opening in the throttle body. Take a video with the camera pointing straight down into the throttle body. Or just try and open the butterfly valve. It sounds like it is starving for air. Similar to a carb choke getting stuck closed.
Thanks for all the suggestions.05 Mobius LSV - gravity 3 ballast and wake plate
single axle trailer
DIY hot water shower installed
DIY tube inflator installed
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06-06-2013, 09:45 PM #17
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06-07-2013, 08:41 AM #18Senior Member
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Re: Air sucking sound/stall?
Just watching his videos it totally reminds me of the vapor lock my 05 used to get. Since the engine is starved for fuel its trying to choke itself by closing the throttle plate and use the vacuum the engine is creating to suck more fuel in. I mean it textbook sounds the same its almost creapy.
2013 LSV
2005 LSV - SOLD
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06-07-2013, 08:44 AM #19
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06-07-2013, 11:17 PM #20Junior Member
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When you have a problem starting, push in the throttle only button on the control, throttle up 50% to 75% and see if it starts. The iac (idle air control) valve may be stuck and not allow enough or too much air into the motor for startup or idle. If you throttle up, it will take the iac circuit out of the equation.