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Old 07-30-2020, 11:37 PM   #1
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Unhappy fuel smell

I had my 3100SE out yesterday and whilst cruising up the river at 8 knots i kept getting a smell of fuel, i would then turn on the blower and it would stop but then come back 10-15 minutes later, Im new to boating so was wondering if its normal at low speed or should you never be able to smell any fumes at all?
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Old 07-31-2020, 01:03 AM   #2
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Fuel smells on a boat are bad juju.... Find the source and fix it...

What kind of engines? Year?
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Old 07-31-2020, 02:12 AM   #3
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Hey mate, its a 2006 with 5.0 mercruisers
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Old 07-31-2020, 02:17 AM   #4
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Do you only smell gas when the engines are running? If not either a fuel line or the tanks is leaking. If only when running try running one engine at a time to see which one is causing it.
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Old 07-31-2020, 05:31 AM   #5
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ive never noticed the smell when its not running, but ill try running one at a time,
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Old 07-31-2020, 12:17 PM   #6
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Quote:
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ive never noticed the smell when its not running, but ill try running one at a time,
Then it’s probably not the fuel tank or fill hose but is limited to the engine fuel supply hose or carb issue.
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Old 07-31-2020, 03:26 PM   #7
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Wondering why you don't run the blower all the time? I do.
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Old 07-31-2020, 05:48 PM   #8
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Wondering why you don't run the blower all the time? I do.
You shouldn’t need to. The blower is to evacuate and fumes prior to starting a gas engine. If fumes are accumulating while running you have an issue that needs to be resolved.
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Old 07-31-2020, 06:39 PM   #9
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You shouldn’t need to. The blower is to evacuate and fumes prior to starting a gas engine. If fumes are accumulating while running you have an issue that needs to be resolved.
All the more reason to run the blower while under way! Yes, the issue needs to be resolved but why wait till you have an explosion to do that? Just my common sense kicking in.
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Old 08-01-2020, 01:07 AM   #10
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All the more reason to run the blower while under way! Yes, the issue needs to be resolved but why wait till you have an explosion to do that? Just my common sense kicking in.
If there is a fuel leak running the blower will not prevent an explosion. Seen this happen more than once.
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Old 08-01-2020, 03:35 AM   #11
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Fuel leak / smell = DO NOT START THIS BOAT UNTIL THE ISSUE IS FIXED.
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Old 08-02-2020, 01:03 PM   #12
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Agreed!!!
If you smell fuel, shut down immediately. The vapors needed to ignite are already in the bilge and you can blow yourselves sky high. You will need to trace the fuel line and find the source before any further running. If they are carb’d engines it may be something as simple as a stuck float.
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