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| Black "sediment" when flushing engine? https://smwebhead.com/phpBB3/viewtopic.php?f=11&t=4550 |
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| Author: | EvilZ [ Sun Sep 13, 2009 3:02 pm ] |
| Post subject: | Black "sediment" when flushing engine? |
So, I flushed my engine/outdrive this morning and the water coming out initially was black. Looks like really fine sediment was being flushed out. After a minute or so, the water was clear. The boat has been sitting in my driveway for a few months now. Rust, sediment, or something else? Thoughts? |
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| Author: | ht32bsx115 [ Sun Sep 13, 2009 7:07 pm ] |
| Post subject: | Re: Black "sediment" when flushing engine? |
Howdy, It might be carbon from the exhaust system. The engine might run a little rich if it's carbed due to the choke or rich from the EFI (although it shouldn't be enough to make black smoke) The carbon might break loose when the water is exhausted thru the y-pipe.... If it was rust, it probably wouldn't be black. I love that picture in your sig.....where is it? |
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| Author: | EvilZ [ Sun Sep 13, 2009 7:28 pm ] |
| Post subject: | Re: Black "sediment" when flushing engine? |
The picture is at Lake Mohave in one of many such coves up-river. It's pretty awesome this time of year - not so many people and the weather is still great! |
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| Author: | ht32bsx115 [ Mon Sep 14, 2009 1:41 am ] |
| Post subject: | Re: Black "sediment" when flushing engine? |
EvilZ wrote: The picture is at Lake Mohave in one of many such coves up-river. It's pretty awesome this time of year - not so many people and the weather is still great! I really liked Mojave, Only been there once.... many years ago... |
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| Author: | Graham R [ Tue Sep 15, 2009 10:33 am ] |
| Post subject: | Re: Black "sediment" when flushing engine? |
The black stuff sound like what you used to get in old domestic heating systems that had cast iron radiators; it's just another oxide of iron that forms in water ( Magnetite, Fe3O4) Graham |
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| Author: | EvilZ [ Tue Sep 15, 2009 11:48 am ] |
| Post subject: | Re: Black "sediment" when flushing engine? |
My service guy at the dealership said not to worry about it - just junk in the system.... Still, it's a little off-putting seeing all that crap coming out. Probably just means I need to use the boat more often! |
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| Author: | qweedqwag [ Mon Sep 21, 2009 12:42 am ] |
| Post subject: | Re: Black "sediment" when flushing engine? |
As long as it runs clear at some point thats good thing. Mike |
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