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Suzuki df50 - SaltwaterCentral.Com
Suzuki df50 - SaltwaterCentral.Com
Suzuki df50 - SaltwaterCentral.Com
November 18, 2018 8:10 pm EST
Location: 33.436N 77.743W
Wind Dir: E (80°)
Wind Speed: 10 knots
Wind Gust: 12 knots
AT Ps: 30.19 in (1022.2 mb)
Air Temp: 72°F (22.0°C)
Dew Point: 58°F (14.2°C)
Water Temp: 73°F (22.5°C)

Suzuki df50 - SaltwaterCentral.Com

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willyfastz
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PostPosted: Wed Jun 27, 2018 6:35 pm    Post subject: Suzuki df50 Reply with quote

My son bought a 06 df50 for his jon boat. Engine runs good but puts water in the oil. Could the head gasket be blown and still run good?
Any ideas what it could be?
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BarryTurano
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PostPosted: Wed Jun 27, 2018 7:21 pm    Post subject: Reply with quote

Positive that it's water? If you are making oil by getting fuel into it probably have a fuel pump issue. If IS water don't run the motor you will seize it.
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willyfastz
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PostPosted: Wed Jun 27, 2018 7:41 pm    Post subject: Reply with quote

Its water, just had a df150 that was putting gas in the oil.

On the 50 we put it on his boat and ran it about a mile. We checked the oil and it had water in it. Changed filter and put in new oil. Ran it the same mile and it has water in the oil again.
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BarryTurano
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PostPosted: Wed Jun 27, 2018 11:28 pm    Post subject: Reply with quote

Does the motor have an oil cooler. A 50 is probably 2 cylinders a blown head gasket would run like crap.
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willyfastz
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PostPosted: Thu Jun 28, 2018 11:07 am    Post subject: Reply with quote

3 cylinders and there is an oil pan gasket. We're thinking this is were its leaking.
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BarryTurano
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PostPosted: Thu Jun 28, 2018 12:22 pm    Post subject: Reply with quote

willyfastz wrote:
3 cylinders and there is an oil pan gasket. We're thinking this is were its leaking.


Very good thought. I am more familiar with inboards than outboards. Which is why I mentioned the "oil cooler". Are you getting a lot of spray under the cowling? If you are it could very well be a gasket or a seal on the oil tank or fill. I would be interested to know what you find. Good luck.
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willyfastz
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PostPosted: Thu Jun 28, 2018 4:16 pm    Post subject: Reply with quote

Well we pulled the power head and whoever worked on it before bolted the oil pan to the block without a gasket. They just used blue silicon. Looks like they reused the gasket that's between the oil pan and gear case. Fingers crossed that this is where the leak is.
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BarryTurano
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PostPosted: Thu Jun 28, 2018 4:58 pm    Post subject: Reply with quote

Hopefully that solves the problem.
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Lunchmoney
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PostPosted: Thu Jun 28, 2018 6:23 pm    Post subject: Reply with quote

Had twin 03 DF140's that were getting water in the oil. Turned out to be the heads on both. Holes had corroded through the water jacket allowing cooling water to leak into the combustion chamber. It can have this condition, create milky oil but still run fine... for a little while. Before replacing the oil pan gasket and putting it all back together, I'd separate the head from the block and have a good look. If you don't find anything, order the gasket kit that should include all gaskets for a rebuild, then stick it back together and try it. On one of ours, the hole wasn't visible until I removed an exhaust valve. I tore that engine down 3 times before I finally found the hole. (Shout out to Bob Dumong at Buckhorn Boat Doc for telling me to look under the exhaust valves.) The other one it was right in plain view. If you have any rusty valve stems on either the intake or exhaust side, that's a good indicator the leak is nearby. Hopefully this isn't the case as it's pretty much a death sentence to the engine from a dollars standpoint.  
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willyfastz
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PostPosted: Fri Jun 29, 2018 2:05 am    Post subject: Reply with quote

We did pull the head and think that it may have been leaking. Got a full gasket set from Fort Macon marine and put it back together. Figures crossed that this fixes it. Wish I had seen the post about the exhaust valves earlier.
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willyfastz
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PostPosted: Sat Jun 30, 2018 11:17 am    Post subject: Reply with quote

Head gasket didnt fix it. Ran for 30-40mins on the hose with no water in the oil. Took it to the river and it gets water in the oil within a 1/4 mile.
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Lunchmoney
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PostPosted: Wed Jul 04, 2018 2:47 am    Post subject: Reply with quote

My experience with this is with the 140s so I could be dead wrong... I'd say remove the exhaust valves starting with the lowest first and look for a hole between the water passages and the area under the valve. Could be the hole is real small where at idle on the hose there's not enough water entering the combustion chamber to affect the oil. It could be getting pushed out with the exhaust at idle rpms. When running on the water at higher rpms, the water pump is pushing more so more water is getting in. One spark plug looking a lot cleaner than the others is another indicator of this condition. Frustrating as hell, I know.  
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Lunchmoney
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PostPosted: Sat Jul 07, 2018 5:02 pm    Post subject: Reply with quote

Just checking in on you Capt. Any updates?  
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willyfastz
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PostPosted: Tue Jul 10, 2018 12:40 am    Post subject: Reply with quote

Found a brand new bare head on ebay. It just came in today. While pulling the valves and such out we found a crack in the old head. Also all the tips on the intake valves have wear. One the intake valve with the most wear the valve guide was also cracked.
We should have it back together by the end of the week. I'm feeling pretty good that this new head is going to fix our water problem.
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Lunchmoney
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PostPosted: Tue Jul 10, 2018 6:10 pm    Post subject: Reply with quote

Well it's good in that it sounds like you found the problem. Keep us posted and good luck with it.  
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BrittniDion
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PostPosted: Fri Jul 13, 2018 1:14 pm    Post subject: Reply with quote

had the exact same problem , good job on fixing it. wtg  
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willyfastz
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PostPosted: Sat Jul 14, 2018 2:47 am    Post subject: Reply with quote

The brand new head I bought has been updated with zinks. This will deff help with the corrosion problem they must have with these engines. It was a little aggravating swapping the valves and valve springs but other than that it wasnt a bad job.

My son took it to the river this afternoon and so far there's no water in the oil. I'm thinking its ready to gig some flounder tomorrow night.
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