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I just bought a 2007 Strat with 2200 miles on it. It has D&D slip-on exhaust. It does not have a power commander installed.

The bike seems to have a knocking that sounds like typical need of valve adjustment. The original owner says Yamaha service told him that was a normal sound on the Strats.

I wondered if its a few things.

1. Exup freaking out because of slip-ons.
2. Needs power commander to correct this.
3. Just needs valve adjustment.

Any thoughts? Thanks.
 

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noise

Shawn,

It is hard to read about a sound and make a good call. You might try to get a chance to listen to another Liner with the same set up, Mostly on intake more so than exhaust.

Has the Air box or filter been changed from stock. If so there will be an increase in noise. If that is your noise of course I don't know. These big V Twins suck a bunch of air in a very short time. Some of the time obstructed by the throttle body. They are anything but quiet.

I usually think of valve noise as a ticking noise not a knock.

The Ex up valve is in the exhaust just ahead of the muffler. So I dought that is your noise.

The Power Commander is a good addition but I dought it has much to do with top end or intake noise. It controls the fuel mixture, I guess this could affect noise. Not sure about timming.

Yamaha suggests you check valve adjustment every 16,000 miles if I remember right. I had my valves checked at 32,000. They were good. Still good at 42,000 miles. Of course there are always some that need adjusted. I am only trying to keep you from worrying about some of the Liners normal intake noises and spending a bunch of money.

In the end you will have to be the judge.

Dave
 

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I just bought a 2007 Strat with 2200 miles on it. It has D&D slip-on exhaust. It does not have a power commander installed.

The bike seems to have a knocking that sounds like typical need of valve adjustment. The original owner says Yamaha service told him that was a normal sound on the Strats.

I wondered if its a few things.

1. Exup freaking out because of slip-ons.
2. Needs power commander to correct this.
3. Just needs valve adjustment.

Any thoughts? Thanks.
I'm with LinerDave.. it takes some time to get an idea of what the sound is and these bikes have a fair rattle to them, with so few miles I don't think the valves need to be adjusted yet. The exup system is good to keep, and adding a fuel management system will not get rid of top end noises.

? I have are octane of fuel that you use.. bike likes premium, also alcohol that is in fuel at a lot of stations some have said on here and other forums as being an issue.
next ? LD asked about the air filer or intake system lot of guys add and it will increase top end noises that are heard but increase performance..might check into that.
my last ? is grade oil dyno or synthetic.. my R* rattle all the time til I got done breaking it in and I switched to synthetic and have been a synthetic oil user on the bikes ever since, runs quieter and cooler.
hope we can get you the answers you need, keep asking or telling your results.

Ride Safe.
 

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My Liner makes a little top end noise too, but so does my buddies Raider. I tend to hear it more when I have the windshield on it(no wind whipping past my ears) but with no windshield it sounds just like ridin my buddies raider. I think its a pretty normal sound. I had to learn all the new sounds , vibrations and quirks of this bike. I just sold my V65 Sabre which is a completely different animal than the liner but every bike is different with its own set of noises(ARE YOU DONE YET!!) LEAVE ME ALONE IM TRYING TO HELP THIS GUY! Ok all I'm trying to say is the noise is probably normal and nothing to worry about.
 

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I am familiar with the noise of which you speak. I had an 01 Roadstar Silverado and now have an 06 Strat. Both bikes make the same noise. It is most noticable when the bike is hot and pulling away from a stop or rolling on the throttle at speed right?. Perfectly normal, nothing to worry about, nothing bad going on. Just the normal sound of this particular engine design. You'll eventually get used to it and not give it a second thought. For the most part, this is a bullet proof engine, ride it like you stole it.

Fat Strat
 

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I also read that the hydraulic lifters have failed on occassion so be sure to listen to them and get them checked it the rattle is excessively loud or continues. think I read about it on other star forums raider and yamaha have a service bulletin but I can't find it yet again..
 

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I just bought a 2007 Strat with 2200 miles on it. It has D&D slip-on exhaust. It does not have a power commander installed.

The bike seems to have a knocking that sounds like typical need of valve adjustment. The original owner says Yamaha service told him that was a normal sound on the Strats.

I wondered if its a few things.

1. Exup freaking out because of slip-ons.
2. Needs power commander to correct this.
3. Just needs valve adjustment.

Any thoughts? Thanks.
the lifter's are hydralic. they need no adjustment. the knocking sound is probably the lifters are defective. yamaha has been replaceing these. most strats do NOT make a knocking sound. it is NOT typical. mine did this twice when on a trip to yellowstone this summer. it sounded like the rods were going to come flying out it was so loud. the fist time i let it warm up and it went away. the second time i let it warm up and it never quite dissappeared. i got pissed off and reved the crap out of it and it went away and never came back. i still am on the original lifters. i ride my bike hard and during the trip it was all easy riding. try running it though the whole rpm range HARD after it has warmed up. this may cause what ever is making it stick to come loose. if not take to to your dealer and dont let them off the hook. if they tell you it is normal then let them know you think they are not very good at diagnosing trouble sounds as the bike has hydralic lifter and should NOT make lifter noise. they should have another start on the floor. have them start it up and see if there is a difference. this should help you determine if the sound is normal or not.
 

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I have an '07 Strat. After about 600 miles the bike developed a fairly noisy lifter "clatter" when it was warming up. This sound would eventually subside after the bike warmed up but it would often take 5 minutes. We changed to synthetic oil thinking this might help. It didn't. After more evaluation/experimentation it was decided I probably had faulty lifters and Yamaha agreed to repair it under warranty. When they broke down the bike it was discovered that one of my lifters had "collapsed". Apparently there were some faulty lifters that got into the 113 engines (Liners and Raiders) during the early years of production. After they replaced all four lifters the engine was much quieter with just a slight "ticking" sound rather than a "clatter". I've had no problems since. I hope you don't have the same problem I had. However, if this sounds similar to your situation you should take it in to Yamaha and ask them to see if there's a possibility you have a collapsed lifter. Yamaha should have this well documented by now since it's occurred in several bikes with the 113 engine. The only good news is that there is probably no permanent damage being done to the engine, but if your bike isn't under warranty it could be costly to fix it.

Good luck!
 
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