Well,yeah..the blade isn't the issue..as you say.It has no friction on it.I'm not sure what you're saying here...when you drain the radiator/engine by removing the feed hose...it will be virtually empty(the pump internals) when you go to start again with new coolant...until the pump starts pulling.So the mechanical seal there is somewhat vulnerable...but it will always be if you drain all fluid and start again.I'm not understanding THIS part of the talk here.What it's relating to....we were talking about flushing out old coolant and doing it with distilled water...or vinegar..then refilling and burping the system.I must be not getting something here...I'd honestly like to know what it is....seriously.I can always learn something I didn't know before....that's what's so good about this forum;)
I mean...whenever I've drained my coolant...there is always some left in the pump housing...sitting along the bottom of it in there.Refilling with the hose connected,the coolant is gonna be entering the vanes(gravity) before it ever turns over...so it's not really like.."dry" when starting the bike.I've always just drained with the hose disconnected...and refilled...started the engine,and watched for the burping effect to happen.If it didn't start burping within several seconds.I shut the engine off...squeezed the hoses a couple of times...then restarted.That would usually get the coolant moving in the radiator(IF IT WASN'T at startup).Once that was happening...then I resqueezed the hoses as it was circulating...and filled again as necessary( I always squeezed the hoses a few times regardless).....Never had any problems with the pump being damaged somehow that I know of?Would it be dripping or something to be able to see if it was damaged?(not from the hose clamps area).
As for the vinegar use...if a guy could determine a 'safe' mixture..that'd be one thing...but not knowing the metallurgy of Kawasaki's aluminum parts in there...it could go very wrong.Having NO coolant...but only water and vinegar..and then running the motor...it's gonna heat up pretty fast and above what it 'should be'...that could be not so good.With that mix in there.Possibly?...maybe?...hell,IDKLOL!!
"Re: cooling system flush with vinegar
I used to do it but found that the mild acid was still too aggressive and led to problems like hoses rotting out from the inside. Now I just flush everything really well with tap water, bring the engine up to full temperature, and repeat as needed. Regular maintenance means never needing the aggressive stuff"
...most said it's fine to use vinegar combined with a bit of baking soda.I guess a vinegar flush is fine....long as you clear the system really well with a final water flush.
* Last updated by: Grn14 on 11/21/2014 @ 10:38 PM *