04-03-2012, 07:24 PM #1
F12 vibration at 1/2 to WOT throttle
Have a Honda F12x. The ski has 90hrs on it. Runs GREAT. Sometimes I notice a high speed vibration when running from 1/2 up to WOT. If I throw the ski in a sharp turn it goes away.
Any ideas on what this could be?
I dont know if the pump has been serviced, is there a driveshaft bearing that needs to be greased??
04-04-2012, 06:49 AM #2
04-04-2012, 09:24 AM #3
Ok I found the zerk fitting. Put about 8 Pumps of grease into it...lol I dont think that has ever been done.
Its weird, once you get up 40+ mph and cruise for a few seconds a noise starts getting louder and louder, But theres also a vibration along with it unless you turn sharp and it all goes away and is quiet again. I will put the ski back in the water tonight to see if it just needed some grease to thru hull bearing....with my luck I doubt it though!
04-04-2012, 09:48 AM #4
04-04-2012, 12:09 PM #5
Prop looks good. Pump has never been removed since it was new.
Im working on this for a friend, he had me change the oil/filter/plugs and wanted me to ride it to see what I thought. And I noticed it. He never said anything about it..lol
I will check all bolts tonight and see if I can find anything!
04-04-2012, 12:52 PM #6
04-04-2012, 01:22 PM #7
My kawi 15f did the same exact thing at the same speed, sound would disappear while making a turn. I took it to the dealer, I assumed it was the driveshaft bearing or bent driveshaft, turned out to be the alignment of the engine & driveshaft. check motor mount bolts too, cost me alot to find this out.
04-09-2012, 12:30 PM #8
The Hondas are so quiet that the water hitting the sponsons is a loud vibration and goes away in turns. Sometimes on glass water I can hear the pump intake sucking....
04-17-2012, 04:09 PM #9
It could just be normal as mentioned. It would be well worth pulling that pump and making sure the impeller moves freely by hand. I checked mine last year and it was rubbing. I also greased the pump. Now I pull it every mid-season since I can now pull the pump out like I'm in pit crew for NASCAR.
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