Cooling question - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Engine / Exhaust / Cooling
\ From the radiator, through the case and out
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post #1 of 6 (permalink) Old 03-25-2019, 04:07 PM Thread Starter
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Cooling question

My bike is in it’s early restoration, well I filled it with distilled water too flush and when I went too take the bolt out of the side of the cylinder nothing drained out I’m kindve at a loss because I mashed the hoses and cracked the bleeder to get all the air out and it felt like everything was primed and water came out of the bleeder but still nothing. Any idea? Thanks.

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post #2 of 6 (permalink) Old 03-26-2019, 12:13 AM
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Just did a coolant flush on mine and the vinegar and distilled water mix is how I went . Took awhile to get done due to running it till fan kicked on and then letting it cool before I went to next step but when I finally got to drain plugs on cylinders I noticed very little came out but it was distinctly vinegar water mix . So I just continued sorry I’m no help just thought I would share . 4 different drain locations figured I must of gotten it all through out the whole process.

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post #3 of 6 (permalink) Old 03-26-2019, 05:53 PM
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I didn't get much, if any, from there when I flushed mine. It was all coming from the plug below the water pump, on the bottom of the right side of the engine.

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post #4 of 6 (permalink) Old 03-26-2019, 09:37 PM
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I don't remember any plug on the side of the cylinder. I just pulled the bottom radiator hose, and the plug on the bottom of the engine. Was enough sediment in the engine that nothing came out until I poked something in the hole. Seems like that is probably the most important one to get anyway. . . .

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post #5 of 6 (permalink) Old 03-27-2019, 09:28 AM Thread Starter
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Well kinda sounds like everybody gets the same results. Kinda had in the back of my mind like oh crap why is there nothing in the engine. Thanks everybody gave me alittle more piece of mind
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post #6 of 6 (permalink) Old 03-29-2019, 10:52 PM
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There is a bolt on each cylinder to drain fluid that otherwise will get caught in the water passage. This is to drain what would not normally come out using just the main and radiator drain plugs. One pic below shows one with the bolt already removed and the other still has the bolt in.

The last pic shows about how much fluid to expect coming out.
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