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Boat smoking brown and fuel smell when in idle sta |
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Hollywood 
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Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13514 |
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 Topic: Boat smoking brown and fuel smell when in idle staPosted: October-10-2016 at 10:56am |
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Certainly could be more than just a float out of adjustment.
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2976 |
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Posted: October-09-2016 at 7:11pm |
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From a quote on your other thread:
It sounds like your carburetor needs adjusting. I would start with the float bowl chamber. If the float is not adjusted properly, then 2 things are likely to happen: 1 - Float is adjusted too high: Too much fuel will enter the float bowl and the excess fuel will dump directly into the carburetor causing a rich condition. I had a float stuck open and the engine ran very rough in the low RPM range. Black smoke poured out the exhaust. 2 - Float is adjusted too low: Not enough fuel in the float bowl. The engine starves for fuel at higher RPMs. The engine may appear to run OK at low RPMs, but sustained higher RPMs will often cause the engine to stumble and run very poorly until RPMs are lowered and fuel re-fills the float bowl chambers. Link below to the Holley Carburetor site for float adjustment: LINK to video One challenge with the Holley 4160 Marine carburetor, is that there is no "sight glass" window for easy fuel level viewing. This makes for some trial-and-error adjustments. One typical starting point is to remove the fuel bowl and hold the assembly upside down. The top of the float should be parallel with the top of the float chamber. (The QuickFuel M-600 marine carburetor is based on the Holley 4160, but the QF unit has several upgrades. One major upgrade is the site glass window and float adjustment hardware on the top of the fuel bowl.) JQ |
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: October-09-2016 at 8:49am |
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wakespirit
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Joined: July-21-2012 Location: fr Status: Offline Points: 95 |
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Posted: October-09-2016 at 6:58am |
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Hollywoodien,
Sorry i do not understand what you try tout explain to me. Il do not understand carb yes, but I manage tout change parts with repaire kits with good help on this So I think my question are clear for carb expert in this forum. For fuel in water I have ben told to adjust float which in my case is black without extern screw. So how tout ajustable it properly ? Thé second thing I was simply asking was what coule beaucoup réas on of big brown smoke in idle state? THanks for your help Regards |
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wakespirit
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Posted: October-09-2016 at 6:48am |
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Tanks for your reply.
You mean by that changing even with repair kit is not working ? How should I do at least float ajustement tout avoid fuel behind my boat an avoid smell? My carb is thé 4160 model an m'y float is black with no screw adjutment fromage outsider. THanks for your help Regards |
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Hollywood
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Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13514 |
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Posted: October-09-2016 at 2:01am |
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You're grasping straws and not understanding proper carberatur tuning
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SNobsessed
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Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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Posted: October-08-2016 at 11:56pm |
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There are reports of replacement needle valve/seats not working properly.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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wakespirit
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Posted: October-08-2016 at 2:17pm |
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what do you suggest ? at which level should I check ?
Too much fuel, mix screw not properly set ? regards serge |
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Hollywood
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Posted: October-08-2016 at 1:54pm |
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Sounds like carb issues againn
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wakespirit
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Posted: October-08-2016 at 12:35pm |
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What could be the cause of big brown smoke when boat is in idle state ?
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wakespirit
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Posted: October-08-2016 at 11:19am |
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Dear all,
I have a correct crafft Ski Nautique model of 1990 and I was ready to sell it when I discover a strange thing. When I start my boat and let the idle state by remaining at the dock, behind the boat at bord where skiier put their skies on, I can see a smoke wich is brown and spell of gazoline. which is really ennoying because you cannot stand at the behind board. Is it normal to have such big smoke behind my boat ? when I see other boat they do not have smoke at all. Please note that last year I have repair my carb because I get dark smoke behind. I buy a repair kit and change all parts. Then after this no more dark smoke but now something new. Any idea what it could be and how to avoid the boat smoking like this with fuel smell behind ? Thanks for your help regards serge |
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