slight howling sound

[hookumhi]

Just wanted to post and ask if anyone has a idea of what my problem is with my boat. I have a 350 engine with a Kodiak 2 stage pump . I went and took her out fishing/tubing last weekend and after about 2 hours of pulling my kids around on the tubes I could hear a low pitch howl , it was directly in sync with the reving of the engine. By the end of the trip I didnt detect the howl , so it was on and off. I did grease the Thrust bearing just before the trip . Not sure what I should do , Leave it or take it in and see whats going on . We were at a high elevation 6500' and it did run very sluggish with not much top end. I only have about 136 hrs on the engine and pump and always give the thrust bearings a squirt every 10hrs or so. I am at sea level now and thinking of taking her out to see how she works down here. Any ideas or advice would be very appreciated. Thanks, jim

[BIGCSS]

Just wanted to post and ask if anyone has a idea of what my problem is with my boat. I have a 350 engine with a Kodiak 2 stage pump . I went and took her out fishing/tubing last weekend and after about 2 hours of pulling my kids around on the tubes I could hear a low pitch howl , it was directly in sync with the reving of the engine. By the end of the trip I didnt detect the howl , so it was on and off. I did grease the Thrust bearing just before the trip . Not sure what I should do , Leave it or take it in and see whats going on . We were at a high elevation 6500' and it did run very sluggish with not much top end. I only have about 136 hrs on the engine and pump and always give the thrust bearings a squirt every 10hrs or so. I am at sea level now and thinking of taking her out to see how she works down here. Any ideas or advice would be very appreciated. Thanks, jim

I would get the thrust bearing checked out. You may be over greasing it at every 10 hrs especially if you are putting in more than 1 or 2 squirts. On the Hamilton pumps (Kodiak is an older Hamilton design) the recommended pump greasing interval was as low as 30 hrs and as high as 50 hrs. I have 2 boats one with a Kodiak 3 stage and one with a Hamilton 241 both of them I grease about every 35-40 hrs with only a couple of squirts and they both run fine. (The 3 stage has about 240 hrs and the 241 has 160 hrs). Anyhow I would get it checked, because when the thrust bearing goes out completely it is a very expensive fix, better safe than sorry.

[fishkisser]

I would get the thrust bearing checked out. You may be over greasing it at every 10 hrs especially if you are putting in more than 1 or 2 squirts. On the Hamilton pumps (Kodiak is an older Hamilton design) the recommended pump greasing interval was as low as 30 hrs and as high as 50 hrs. I have 2 boats one with a Kodiak 3 stage and one with a Hamilton 241 both of them I grease about every 35-40 hrs with only a couple of squirts and they both run fine. (The 3 stage has about 240 hrs and the 241 has 160 hrs). Anyhow I would get it checked, because when the thrust bearing goes out completely it is a very expensive fix, better safe than sorry.

:agree: My Marine power Jet X-Stream says grease every 50hrs ... Yea and its hard not to pump some in for me too...;)

[Woodguy]

You may have just sucked up some weeds or a stick. As you back off on the throttle and stop, the debris will sometimes free itself. If you're intake is obstructed, it can cause a howl and will definitely decrease you're top end. This happens all the time with our Kodiak 496 with Hamilton 212.

[Green Machine]

Kodiak pumps are loud!! If there is nothing stuck up inside and the thrust bearing isn't getting hot, I wouldn't worry about it.

Green Machine