01 929 just bought engine noise, valve tap? - Honda Motorcycles - FireBlades.org
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post #1 of 18 Old 07-01-2016, 1:08 PM Thread Starter
 
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01 929 just bought engine noise, valve tap?

First post. Day three of riding a road bike. 4 days ago had never ridden one on the street. Just dirt bikes, so I'm new to everything. So far I love it. I'm concerned about an engine noise though. Happens when giving gas, and more pronounced with more throttle. Piston slap, or valves, or the cct belt or whatever it's called? It's a super clean bike with 20k on it. The noise is like a ting, ting, ting when getting on it. Doesn't do it while idling. Any ideas?
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post #2 of 18 Old 07-01-2016, 2:26 PM
 
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Re: 01 929 just bought engine noise, valve tap?

Sounds like the tensioner.
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post #3 of 18 Old 07-01-2016, 7:09 PM
 
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Re: 01 929 just bought engine noise, valve tap?

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Originally Posted by peachride89 View Post
The noise is like a ting, ting, ting when getting on it. Doesn't do it while idling. Any ideas?
Up the gas to premium. Engine knock?
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post #4 of 18 Old 07-01-2016, 10:55 PM
 
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Re: 01 929 just bought engine noise, valve tap?

Sure would be nice to get premium fuel and find out it was nothing but stale gas.
20k is nothing. I vote for it being bad fuel too.

If I'm wrong, then next step, does it do it when you're in neutral (sitting still) and you rev it up? If it does, you can put your ear close to it and listen to where it's coming from more precisely.

When I listen for tensioner noise I often heard it happen just off idle to about 2000 - 2500 rpm and just backing off, than during hard acceleration and higher rpm. All the other engine noises start to drown out a chain rattle and it's not a "ting" sound. If it was piston slap, it wouldn't "ting" either.

Give an update after a full tank of premium, if the tings subside.
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post #5 of 18 Old 07-02-2016, 1:14 AM Thread Starter
 
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Re: 01 929 just bought engine noise, valve tap?

Only when giving it gas in gear. Not when idling. Like half throttle or more is when it's noticeable, like it's straining, but it's not. It's fast as hell, to me, but I haven't rode any other bikes to compare it to. If I could hold my phone down there and record it, I would. I've listened to the cct on youtube, and it seems to happen even at idle. This is different. I'm hoping it's not like a rod going out, or piston slap, or valve slap. They all sound expensive at around $100 an hour shop rates. I know literally nothing about engines, so it's a no go on doing it myself. I'd just make it worse. I'm just worried I may be damaging a nice bike by ignoring it. Had the chain tightened from way loose the other day at the shop, so it's not the chain either.

The guy I bought it from told me to only put premium in, and he's got other nice bikes, so I don't think it's the gas. Speaking of gas, I got some today that was only 90 octane, but ethanol free. What's better, 92 with ethanol, or 90 without?

Last edited by peachride89; 07-02-2016 at 1:54 AM.
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post #6 of 18 Old 07-02-2016, 1:33 AM Thread Starter
 
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Re: 01 929 just bought engine noise, valve tap?

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post #7 of 18 Old 07-02-2016, 1:36 AM Thread Starter
 
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Re: 01 929 just bought engine noise, valve tap?

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post #8 of 18 Old 07-02-2016, 5:01 AM
 
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Re: 01 929 just bought engine noise, valve tap?

^ Looks sharp.

RE the fuel grade comment by the bike's previous owner, do you know if there is a power commander/fuel controller installed on it or was the engine "built" (ie - drag racer, etc) ?

That ethanol free 90 octane you put in the tank *should* be just fine.

I'm just wondering if there was some type of "trick" tune/custom map installed on the bike that required premium or something goofy (ie race engine) along those lines - probably wouldn't hurt to contact the previous owner and ask him about the above items, if you can.

IIRC these bikes only required a minimum of 86 (or was it 87?) octane according to the owner's manual but that doesn't rule out that the rider may have to upgrade to mid-grade or even a premium octane if the engine isn't happy and pings/knocks on the lower octane fuel (assuming everything else is mechanically OK).

Ideally, one would want to run the lowest octane that does NOT ping/knock in your engine...or just go with whatever the manufacturer recommends.

G'luck !

-'02 Silver/Black CBR 954RR
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post #9 of 18 Old 07-02-2016, 9:05 AM
 
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Re: 01 929 just bought engine noise, valve tap?

Every CBR I've ever had has been a rattly b'tard
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post #10 of 18 Old 07-02-2016, 12:50 PM Thread Starter
 
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Re: 01 929 just bought engine noise, valve tap?

I don't think there's any kind of map sensor or anything like that. This bike is pretty stock, minus the corbin seat, exhaust, and smoked windscreen.
While were here, I do have another issue I was wondering about. First gear clunks hard when hitting a red light, entering neutral, and then entering first gear. Doesn't matter if I hold the clutch for a spit second, or 20 seconds. CLUNK, and the whole bike jumps. Then the rest seem fine. I usually just hold the clutch for now because of that, or if it's a 5 min light, I'll shut her off, and start already in first gear. Seems like the clutch engages at the very end of the lever, meaning I barely pull in, and it's already engaging, instead of toward the middle of the clutch lever. Not sure if that is related to the clunk or not.

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post #11 of 18 Old 07-02-2016, 1:27 PM
 
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Re: 01 929 just bought engine noise, valve tap?

Clutch pack is shot. Lurch means dragging or bent/wrinkled steels. Lever to the grip and engages from there; is lots of material about to collapse on each other. Lever engages out to the perch is less material at the plates so you let the lever out until they touch.

Pull the exhaust, drop the lower sump pan. There is gray matter [literally] off of the plates and pistons. Normal wear; no problem. You can tell also by looking up the cylinder walls if there is any wall damage due to scoring/galling. You want to see gray caking settled on that pan and no aluminum chunks... Like way too many chips.

1. Brass chips = Crank/Rod inserts going.
2. Soft aluminum chip = More insert material = Not good! Do not ride.
3. Rod color = Blue burning around big end of the connecting rod.
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post #12 of 18 Old 07-02-2016, 6:23 PM
 
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Re: 01 929 just bought engine noise, valve tap?

I've yet to have a bike that doesn't clunk into 1st
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post #13 of 18 Old 07-02-2016, 8:33 PM
 
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Re: 01 929 just bought engine noise, valve tap?

I would not worry too much mine is the same, In fact every 1 has been- some better than others.

The KTM RC8 i had.... well that was a bitch for tight clunking gear changing. The chances of me getting that thing in neutral when i came to a stop was pretty much a challenge in its self though that was hydraulic rather than cable i did have a work around and used a new Oberon Clutch slave cylinder which did make it feel better but i still had the first gear clunk.

What setting is the clutch at?

I did find putting aftermarket levers on mine helped a bit.
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post #14 of 18 Old 07-02-2016, 9:43 PM
 
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Re: 01 929 just bought engine noise, valve tap?



Nice truck? Dodge?

Yeah, your clutch slave might be failing, or the clutch plates are warped. Clunks are acceptable, jumping forward is not normal. Change the oil and see how much clutch material is in the drain pan. Hydraulic clutches are a pain in the sense more goes wrong and you can't feel the clutch like you can with cable clutches.
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post #15 of 18 Old 07-03-2016, 9:09 AM
 
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Re: 01 929 just bought engine noise, valve tap?

Possibly chain incorrectly adjusted.
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