Stratoliner engine vibration help! - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
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post #1 of 28 (permalink) Old 08-03-2018, 07:19 PM Thread Starter
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Stratoliner engine vibration help!

My bike has 29000 miles and recently developed a vibration that intensifies with increased rpms. It does it in neutral stationary and in motion while driving. I start to notice it around 2300 rpms and it gets real bad around 3000 and up. The local dealer basically says he will bill me a fortune taking the bike apart to find it. Aside from the vibration the bike seems to run fine and no check engine light. Any ideas? Thanks!
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post #2 of 28 (permalink) Old 08-03-2018, 07:22 PM Thread Starter
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To clarify it is a 2007 stratoliner s.
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post #3 of 28 (permalink) Old 08-03-2018, 07:47 PM
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Have you checked the motor mount bolts? Years ago I had a motor mount bolt back off, just one, and motor would start to shake and certain RPMs. Keep us informed.
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post #4 of 28 (permalink) Old 08-03-2018, 09:13 PM Thread Starter
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Have you checked the motor mount bolts? Years ago I had a motor mount bolt back off, just one, and motor would start to shake and certain RPMs. Keep us informed.
The mounts seem pretty darn tight I just checked them.
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post #5 of 28 (permalink) Old 08-03-2018, 09:24 PM
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does this bike have one of the 1600 or 1700 engines that can have the final drive pulley bolt/nut come loose?
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post #6 of 28 (permalink) Old 08-03-2018, 09:28 PM Thread Starter
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Someone suggested this to me at a dealer. Would the fact that it vibrates in neutral as well rule a loose front drive pulley out?
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post #7 of 28 (permalink) Old 08-04-2018, 01:10 PM
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Our definition of "real bad" may be different. Where is the vibration? From the engine, the handlebars or ? If you're going to look into it yourself it may be as simple as changing the oil to a different weight and making sure it's topped off. Or possibly something is seriously loose, so I'd check steering, pulleys, floorboards and such. If you can't solve the problem, I would consider finding another shop to diagnose the problem. It could be a number of issues, but a good mechanic should be able to figure the probable issue by riding it. There are so may crappy shops and dealer mechanics out there, so it may take a bit to find one with the right vibe. Good luck!
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post #8 of 28 (permalink) Old 08-04-2018, 02:19 PM Thread Starter
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Our definition of "real bad" may be different. Where is the vibration? From the engine, the handlebars or ? If you're going to look into it yourself it may be as simple as changing the oil to a different weight and making sure it's topped off. Or possibly something is seriously loose, so I'd check steering, pulleys, floorboards and such. If you can't solve the problem, I would consider finding another shop to diagnose the problem. It could be a number of issues, but a good mechanic should be able to figure the probable issue by riding it. There are so may crappy shops and dealer mechanics out there, so it may take a bit to find one with the right vibe. Good luck!
Here are a few tips.

https://www.writteninchrome.com/view...ons-for-Riders
Hi there. Thanks for the tips. What I meant was the bike had smooth power and no noticeably concerning vibrations before and now it is making it to where I donít even want to ride it because the vibration is so uncomfortable. I just changed the oil and followed the correct procedures for doing so. I also checked that it was topped off. Not sure if maybe I should switch to a synthetic? I guess I can start checking every single bolt one by one to make sure nothing is loose.

Any possibility there is a bushing that could have gone bad on a motor mount, and even though it seems tight it is causing vibration? Thatís assuming they arenít solid mounts. Excuse my limited knowledge.

My main worry is that maybe something is wrong internally and by vibrating my bike is trying to tell me something is wrong and that I wonít be able to fix it before itís too late and I need an engine rebuild.

I have read in other threads that out of adjustment valves can cause this or out of sync throttle bodies, some have said change the spark plugs and wires, clean the injectors and tps. If anyone can rule out any of these before I just start throwing a ton of money fixing things that arenít broken I would appreciate it a ton!

Thanks to everyone chiming In so far.
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post #9 of 28 (permalink) Old 08-04-2018, 02:21 PM Thread Starter
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Also another potential fix for motor vibration was shimming motor mounts. It was on a Harley though.


Update***

I started her up today and tried to listen at idle and I heard a slight ticking noise coming from the rear cylinder towards the top of it on the right hand side of the bike. I did not hear this when I listened closely to the front cylinder. Almost like valves making noise? I'm not certain what it is that I'm hearing. Does anyone know what this is? I have a feeling it is the source of my troubles.

Last edited by Bornforbattle72; 08-04-2018 at 03:18 PM. Reason: Update
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post #10 of 28 (permalink) Old 08-04-2018, 05:59 PM
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when is the last time the bike had a valve adjustment? your bike may not have another scheduled one until 32K miles (if it has kept regularly scheduled maintenance), but it sounds like you should go ahead and get it now. that could be causing both the ticking and extra vibration. you may have found it.
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