SuzukiSavage.com - Why does my bike sound like its boiling?

WunGun Junior Member Offline No cage Posts: 76 Modesto, Ca Gender:	Why does my bike sound like its boiling? 02/04/20 at 00:59:34 I think its safe to assume its not coolant. My battery is old and it did have trouble starting at work and seemed to get hot pretty quick in the mile and a half it takes to commute home. I couldn't pinpoint exactly where the noise was coming from.
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Gary_in_NJ

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Re: Why does my bike sound like its boiling?
Reply #1 - 02/04/20 at 06:31:56

Your battery should not be getting hot to touch after a ride. Yes, the battery heats up while charging, but the little airflow across the battery would dissipate the minimal heat generated.

I'd get a multi-meter on that battery and confirm that it is not getting more than 14.5 volts during charging. If it's getting more your regulator may have failed and you are in fact boiling the battery.

Is this an AGM or lead-acid battery? If it's lead-acid, check the level in each cell.

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Mavigogun Serious Thumper Offline We roll farther together Posts: 775 Progressive Texas	Re: Why does my bike sound like its boiling? Reply #2 - 02/04/20 at 06:41:28 Any remarkable decrease in power, top speed?
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Armen Serious Thumper Offline Half-Witted Wrench-Jockey from Jersey Posts: 1432	Re: Why does my bike sound like its boiling? Reply #3 - 02/04/20 at 08:01:10 Hold the bike upright and check the oil level. Way high or way low will heat things up in a hurry.
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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Why does my bike sound like its boiling? Reply #4 - 02/04/20 at 11:16:00 I'd check the exhaust header flange/ gasket/bolts ,everything tight?
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verslagen1

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Re: Why does my bike sound like its boiling?
Reply #5 - 02/04/20 at 12:14:59

WunGun wrote on 02/04/20 at 00:59:34:

I think its safe to assume its not coolant. My battery is old and it did have trouble starting at work and seemed to get hot pretty quick in the mile and a half it takes to commute home. I couldn't pinpoint exactly where the noise was coming from.

1.5 miles isn't enough to keep your battery charged (or yours)
I hope you get longer rides during the week or your bat will be flat.

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ohiomoto

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Re: Why does my bike sound like its boiling?
Reply #6 - 02/04/20 at 13:12:39

Do you hear this noise while it's running or when you shut it down?

If it's after shutdown, I would be looking at the battery, maybe the crankcase/oil, or anywhere else there is fluid like the fuel tank (maybe some odd vacuum??).

If it's while running, it's possible you are hearing lower end noise like roller bearings, clutch, or something else making noise.

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WunGun

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Re: Why does my bike sound like its boiling?
Reply #7 - 02/04/20 at 17:25:28

Sorry should have clarified better. The engine itself seemed hot not the battery though I didn't touch the battery I'm not sure. Yes there was a drop in power as it had trouble going past 35-45 mph, it would however it delayed for 5-10 seconds if given full throttle.
I do take it on longer trips so it does get frequent opportunity to heat the oil.

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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Why does my bike sound like its boiling? Reply #8 - 02/04/20 at 20:24:53 I wonder if you might be trying to shift to early with a cold engine . try raising your shift points by 5-10 mph that might stop the hesitation , going to WOT will compound the problem .
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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28387 Tucson Az Gender:	Re: Why does my bike sound like its boiling? Reply #9 - 02/05/20 at 10:17:40 Next time it happens open your gas cap,... it might be a clogged tank vent.
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ohiomoto

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Re: Why does my bike sound like its boiling?
Reply #10 - 02/05/20 at 15:31:26

WunGun wrote on 02/04/20 at 17:25:28:

Sorry should have clarified better. The engine itself seemed hot not the battery though I didn't touch the battery I'm not sure. Yes there was a drop in power as it had trouble going past 35-45 mph, it would however it delayed for 5-10 seconds if given full throttle.
I do take it on longer trips so it does get frequent opportunity to heat the oil.

------------

Sounds a little bit like sticky throttle slide. Maybe a petcock, but it's still not clear what this boiling sound you hear is and when you hear it. Until then, we can just throw poop at the wall and hope it sticks. Good luck with that. haha

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« Last Edit: 02/07/20 at 07:31:18 by ohiomoto »

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Gary_in_NJ

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Re: Why does my bike sound like its boiling?
Reply #11 - 02/06/20 at 05:39:15

ohiomoto wrote on 02/05/20 at 15:31:26:
Sounds a little bit like sticky throttle slide. Maybe a petcock, but it's still not clear what this boing sound you hear is and when you hear it. Until then, we can just throw poop at the wall and hope it sticks. Good luck with that. haha

Maybe it's the sound of the chrome begging to be polished?

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Berzerker YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 38	Re: Why does my bike sound like its boiling? Reply #12 - 02/07/20 at 17:00:41 I just had the same thing happen, it was the oil leaking out the dreaded head plug an boiling on my find.
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WunGun Junior Member Offline No cage Posts: 76 Modesto, Ca Gender:	Re: Why does my bike sound like its boiling? Reply #13 - 04/13/20 at 21:40:13 My throttle slide is sticking. Every time the throttle cap happens i open the top of the carb and the slide wont move and needs to be gently pried out with a screwdriver. after its removed it slides just fine until i take it out for a 10-15min minute ride. I noticed it had a very slight amount of play.
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Gary_in_NJ Serious Thumper Offline LS650 Cafe Racer Posts: 2629 Amongst the Twisty Roads	Re: Why does my bike sound like its boiling? Reply #14 - 04/14/20 at 04:23:55 Is the needle bent? If you roll it on a flat surface is there a rise to it? I would not ride a bike that has the potential to have a throttle (slide) stuck open.
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