Hello - I have 2007 SLX (496 mag with 275 hours). Just had it serviced and is running great. I have the VesselView mobile and all temps/readings are fine. Yesterday after going out and coming back to the dock (we’ll after being warmed up), I noticed smoke coming out of the thru hill exhaust (even though the thru hill is off). It’s white/gray smoke and noticeable. I blew a head gasket on a Chevy Silverado once and smoke was billowing out.. it is DEFINITLEY not like that but something I should be concerned with?
270 SLX Smoke
- Thread starter Andy O
- Start date
TonyQSC500
Active Member
- Jan 7, 2018
- 150
- Boat Info
- sold 2007 44 sundancer. White hull with black stripe and canvas.
- Engines
- Cummins QSC 500’s V-drives.
Is it smoke or steam? What are the water temps vs air temps?
alishakihs
New Member
- Aug 9, 2023
- 1
- Boat Info
- Specifically year
- Engines
- Please input the brand of your boa
If you notice white/gray smoke coming out of the thru hull exhaust of your boat, even when the thru hull is turned off, it could indicate a potential issue that should be addressed. While I'm an AI language model and cannot diagnose the problem directly, here are a few possibilities: Donkey Kong
1. Condensation: In some cases, white smoke can be caused by condensation in the exhaust system. If the smoke dissipates quickly and doesn't persist, it may be normal and not a cause for concern. However, if the smoke continues or increases in volume, further investigation may be needed.
2. Coolant leak: White smoke can also be a sign of a coolant leak, which could indicate a problem with the engine's cooling system. This could include issues like a leaking head gasket or a cracked cylinder head. If you've had a previous experience with a blown head gasket, it may be worth having a professional mechanic inspect the engine to rule out any potential issues.
3. Oil-related issue: Another possibility is that the engine is burning oil, which can produce white or gray smoke. This could be due to worn piston rings, valve seals, or other internal engine issues. It's important to monitor oil levels and consult a professional if you suspect an oil-related problem.
Given the potential range of causes and the importance of addressing any issues promptly, it's recommended to have a qualified marine mechanic or technician inspect your boat's engine. They can perform a thorough diagnosis and provide appropriate recommendations or repairs based on their findings.
1. Condensation: In some cases, white smoke can be caused by condensation in the exhaust system. If the smoke dissipates quickly and doesn't persist, it may be normal and not a cause for concern. However, if the smoke continues or increases in volume, further investigation may be needed.
2. Coolant leak: White smoke can also be a sign of a coolant leak, which could indicate a problem with the engine's cooling system. This could include issues like a leaking head gasket or a cracked cylinder head. If you've had a previous experience with a blown head gasket, it may be worth having a professional mechanic inspect the engine to rule out any potential issues.
3. Oil-related issue: Another possibility is that the engine is burning oil, which can produce white or gray smoke. This could be due to worn piston rings, valve seals, or other internal engine issues. It's important to monitor oil levels and consult a professional if you suspect an oil-related problem.
Given the potential range of causes and the importance of addressing any issues promptly, it's recommended to have a qualified marine mechanic or technician inspect your boat's engine. They can perform a thorough diagnosis and provide appropriate recommendations or repairs based on their findings.
paulswagelock
Well-Known Member
Likely quite normal based on the air temp/ water temp / humidity level. Mine used to do it on occasion.
Keep an eye on it and see if it is always happening or just occasionally.
Keep an eye on it and see if it is always happening or just occasionally.
highslice
Well-Known Member
- Mar 28, 2008
- 6,108
- Boat Info
- 270 SLX
2013 Sea Doo 155 Wake
- Engines
- 496 Mag
Bravo III
Corsa
Mine does that from time to time and has been for years. Happens when the humidity is high or when the air and water temps differ a lot.
