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Thread: Smoke from exhaust
08-31-2013, 10:23 PM #1
Smoke from exhaust
Boat was driving fine today. Came back a few hours later and started it up and smoke was coming from the exhaust and it was sputtering a bit.
I talked to a neighbor and he seems to think that I need to clean my water filter or my pump is overheating or failing. I have a 98 moomba outback. Has anyone had any experience with this or can help me out with any advise to start with
08-31-2013, 10:29 PM #2
When mine was puffing a lot of black smoke and not running well, it was the MAP Sensor. Sorry, don't know how to tell you how to test that except by replacing it.
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09-01-2013, 10:05 AM #3Senior Member
- Join Date
- Jan 2008
- Pensacola, FL
What color smoke? Have you changed your fuel filter anytime lately? a little more info is needed.1997 MasterCraft 205
2008 Moomba Outback
1999 MasterCraft Sportstar OB
1992 MasterCraft 205
1999 Malibu Response LX
1987 Marlin Magnum Skier
09-01-2013, 10:31 AM #4
09-01-2013, 12:55 PM #5
So I'm sitting on the boat and have tried a few different things. Here is a little more info.
The carb seems to be getting gas just fine. Sounds like all cylinders are running fine. When I start the boat I have to give it quite a bit of throttle to get it to fire. Once it is fired, and I ease back to an idle, the idle speed slows down until it stalls. As it slows, it starts producing more white/grey smoke. If I rev the engine it seems to run fine at a higher rmp and no smoke.
Would this be bad gas, clogged fuel filter, water in the gas?
09-01-2013, 02:28 PM #6
09-01-2013, 02:57 PM #7
I haven't changed anything. I checked the oil when taking it out or a test run. Oil has been recently changed.
Last edited by liquid_acid; 09-01-2013 at 03:01 PM.