Deleted
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Post by Deleted on Sept 5, 2011 12:05:09 GMT -6
just found that i ran motor and the flush hose wasnt connected engine seemed to run ok had piss stream from pump any ideas if i did any damege?? thanks
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Post by Weaverama on Sept 5, 2011 19:32:43 GMT -6
How long did it run without water? You may have gotten away with it, but the impellor gets toasted without water acting as a lubricant. If the pee stream acts up in anyway in the future, I would swap in a new one.
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Post by Juan on Sept 6, 2011 6:41:31 GMT -6
ditto what Weaverama said.... Been there, done that.... while flushing, the muffs slipped off and it took maybe 5 minutes without water to the lower unit to completely melt the water pump impeller... a costly mistake and one reason I ALWAYS flush using a water tank now instead of muffs..
But if it's still peeing a hard stream, it's probably OK, but you should change the impeller at any sign of the stream weakening.
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Deleted
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Post by Deleted on Sept 6, 2011 10:02:33 GMT -6
Are you running that Yammy on just the motor flush hose connection or on muffs  |
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Post by Deleted on Sept 6, 2011 14:04:48 GMT -6
listen im talking about flush hose connection not muffs the one where you hook up hose to engine without muffs like i said i still have a strong stream from pump
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Post by Juan on Sept 6, 2011 14:59:52 GMT -6
listen im talking about flush hose connection not muffs the one where you hook up hose to engine without muffs like i said i still have a strong stream from pump Your post didn't specify how you were flushing the motor..... are you saying that you ran the motor with the water inlet submerged and the hose connection disconnected? |
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Post by Weaverama on Sept 6, 2011 16:01:43 GMT -6
The manual sez not to run the motor when using the flush port. I have heard some folks who ignore this and do run the engine.
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Post by Simple Man on Sept 7, 2011 9:56:19 GMT -6
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Post by Juan on Sept 7, 2011 15:33:59 GMT -6
 LMAO |
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Post by darkhorse on Sept 11, 2011 15:34:24 GMT -6
lmao
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Deleted
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Post by Deleted on Oct 10, 2011 17:48:58 GMT -6
A guy at work runs his big Yammy of the flush port out of the water on his trailer when he winterizes it in the fall. He swears that it is OK. Yamaha says NO don't do it and every one tells him he's nuts. But he says he has been doing it for several years now and has had no problems with his motor.
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codman
Petty Officer
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Post by codman on Oct 15, 2011 17:59:27 GMT -6
I have a 250 hp hpdi, I have not been able to get a set muffs to work, and I have tried them all. Manual says do not flush engine and run at same time using flush hose, so I just use the flush hose. Next season I'm getting a water tank to immerse the lower unit in.
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Deleted
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Post by Deleted on Apr 17, 2012 9:15:29 GMT -6
The Mercury Verado I have is the same way - Manual states don't do it. I have cranked the motor and let it circulate a minute or two, because I don't trust not running the motor a minute or two. The previous owner did it for 5 years religiously. The pee stream is still strong with this one.
The real question is the disclaimer to not run the motor driven by the lawyers or the engineers? If the water is flowing through the head, then you should be able to run the motor without issue of the HEAD overheating. The question is where in the process is the water connection...Going to the water pump or down stream so that the impeller never gets water. If it's the latter, then you WILL screw up the impeller if you crank and run any period of time. If it is a complete series from water hose, impeller, head, ejection - then it should be fine. Someone else will have to speak to this if they have disassembled the lower end and connected the dots.
However, it seems retarded to put a flush on a motor so that you can't run it - Doesn't make logical sense. You would still have to buy the muffs. I can't even figure out on Verado how to put some muffs on it - The motor is HUGE and weird compared to Yama's and old Mercurys.
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easy
Master Chief
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Post by easy on Apr 21, 2012 3:59:30 GMT -6
I've got an F225 and my mechanic says you don't even have to run the motor to flush it! Just hook up the hose to the upper connection and turn it on. If you watch, the water is running out of the lower unit. It will take a little bit to fill up the head and you can hear it filling up. Sounds like you are filling a big ass jug. When it gets full, the water starts to run from the lower unit. I had my pee hole stopped up by a mud dobber once and my mechanic says don't worry about it not peeing because it doesn't have to pee as it has a bypass in case it is plugged. Do not ever run it with out having the water inlet in the lower unit taking in water. You will fry the impeller at the very least and quite probably the water pump!
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Post by Simple Man on Apr 21, 2012 14:55:31 GMT -6
I've got an F225 and my mechanic says you don't even have to run the motor to flush it!...! What he said. There is no need to run the motor to flush it out if it has a flush out hose connection.... |
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Post by Juan on Apr 23, 2012 6:30:42 GMT -6
If you're confident that your motor is getting the best flushing by using the upper hose conection to flush it out... great, keep doing it that way.... I don't use the upper connection because I don't think that water hose pressure is enough to flush the engine properly compared to the internal water pump... and because there is no pee stream when using the upper connection and that alone tells me that water isn't getting to all the areas that it does when running...and could lead to salt build up and blockage in that area. But if I don't have a tank or muffs available to flush from the lower unit, I'll use the upper connection and then flush from the lower unit later  |
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Post by Simple Man on Apr 23, 2012 8:22:09 GMT -6
Both my Mercaha (Yamaha built Mercury) 225 4 stroke and my 225 Mercury Verado would/will pee from the flush connection only. I agree with you. If it didn't, I would have to run it and make it pee or figure out why it doesn't.
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Post by Simple Man on Apr 23, 2012 8:27:51 GMT -6
...I don't use the upper connection because I don't think that water hose pressure is enough to flush the engine properly compared to the internal water pump... Get rid of that hand pump and get one of them new fangled electric well pumps or even city water! You will have PLENTY of water pressure then...  |
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Post by Juan on Apr 23, 2012 16:28:12 GMT -6
...I don't use the upper connection because I don't think that water hose pressure is enough to flush the engine properly compared to the internal water pump... Get rid of that hand pump and get one of them new fangled electric well pumps or even city water! You will have PLENTY of water pressure then... KMA. ;D You're actually right... I have well water at the boat shed and the pressure isn't enough to make the motor pee... hence the reason I use a tank to flush ... If I connect to "City" water at the house, it has plenty of pressure and pees as it should when connected to the upper connection but will run hot if I use muffs to flush...go figure |
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easy
Master Chief
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Post by easy on Apr 30, 2012 18:24:42 GMT -6
Just found this. Might help with the question!
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