engine knocking

[20valves]

I thought the was supposed to be a dualsport bike.

Weird, mine works great as a dual sport bike. :

If you bought a 1200cc 575lb bike to plonk along under 3K rpm playing in potholes, you probably should have bought something else. And yeah, my engine has been happily clattering away for almost 7,000 miles with zero issues. ::008::

 

[Don in Lodi]

Also what is the PCV mod? I see it referenced a few places but have no idea what it is and keep forgetting to ask. I plan on doing exhaust and few other upgrades but waiting a year.

PCV=Power Commander Five ('V'). It has the potential to clean up a few glitches in the OE programming. It doesn't do as much as the reflash you've been seeing. With the low R stuff, I'm wondering if that reflash might be the way for you to get better low down throttle response. I used to be pretty good at doing wheelies on my XL600, not the "King", but I could impress. I haven't been able to get the XT's front wheel off the ground yet. The XL was half the weight and didn't translate most of it's oomph into going forward as well as the XT. The XT is not a 400 pound dual sport, and while it will willingly play at one, the extra mass tends to break or bend things when you do play.

 

[EricV]

MarkJenn was more polite. the only problem is that you think you have a problem. "the rpms rise faster" with TCS off? Sure, because the tire is spinning, same thing when the TCS light if flashing, the tire is spinning. No real surprise that you ate up a rear tire so fast. You flog your bike. Ok, fine, you're having fun and that's great. But don't whine about tires going away fast or minor noises when you're using too much throttle at low rpm. All you're telling us is that you abuse the bike. In other words, the bike doesn't have a problem, you have a problem.

Next time you buy a new anything, and you think it has a problem when it's brand new, during break in, etc. TAKE IT TO THE DEALER AND TALK TO THEM ABOUT IT. Don't keep using it and hoping it will change. If there really is a problem, it will get fixed a lot faster. And there is less chance of them looking at your beat to shit bike and back at you and saying, "well, we might have fixed this under warranty if you had brought it in when it first started making that noise, but not now when you've obviously been thrashing it for months."

 

[HoebSTer]

road bike more today without helmut and earplugs, def. does it in T-mode. It does it even if you roll on the throttle (not whacking) but it's worse when you whack it. If you are at anything less than 3000 rpms and roll on, it will knock right at 3000 rpm. We're talking gently rolling on .....

I bought it to use as a dual sport. For me, when I'm offroad in rough situations, I can't ride above 3000 rpms without wrecking the bike. So not riding in that range is not an option for me. I don't go for the "it doesn't like it so don't do it" scenario.

Bronco Dave,
IN a respectful way, might I suggest a few riding classes, where you can become comfy with riding this bike the way it was meant? I don't have tons of off-road gravel riding in the mountains, but when we have we are usually in 2nd gear. We can either shift down to keep revs up for slowing down, or shift up to keep engine speed with road speed. If you are going that slow, maybe first gear is best suited and occasional 2nd. This way it provides better responsiveness out of the bike and making it easier to manage and control taking away the thoughts or feelings as if you are going to wreck or something. Having the revs up can surely get one out of sticky situations more often than not, whether in traffic, or on a gravel road.

Jeff

 

[Brntrt]

With all due respect. This bike is a blast to hammer in off road situations and surprisingly adept at being a 600 lb dual sport. I get a similar knock in my KLR's with no I'll effects. It's a big bore twin, it's noisy, get used to it.


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Mark

 

[eheal6520]

I've got about 10k on my S10 now and it has been noisy since I got it in october. I think it has a lot to do with the solid lifters and the way the sound is directed to you. I also was concerned and rode it without my earplugs in and all the noise comes right up the fairing hole for the forks. On other bikes I've ridden the sound comes more from the sides of the bike, not this one, it's right up front in your face. I have balanced the throttles and adjusted the CO setting and this helped the noise a little. Most of my riding has been on the highway, but I feel the need for speed often and run it to the 6k range a lot. I figured if it was a real problem, that is what the warranty is for. So far, just loads of fun!

 

[20valves]

...I can't ride above 3000 rpms without wrecking the bike...So not riding in that range is not an option for me. I don't go for the "it doesn't like it so don't do it" scenario.

These two comments alone I think indicate we have a pilot error situation here and not an issue with the bike . Sounds like dave either needs a WR250 or to go back to busting broncs.

 

[nondairycreamer]

Some good reading here but if anyone thinks there is a problem with their bike it is very important to have it checked at the dealer in order to have an official record. If a problem comes up after the warranty period Yamaha (and others) will still cover repairs if the owner has a record of concern during the warranty period.

 

[HoebSTer]

Some good reading here but if anyone thinks there is a problem with their bike it is very important to have it checked at the dealer in order to have an official record. If a problem comes up after the warranty period Yamaha (and others) will still cover repairs if the owner has a record of concern during the warranty period.

NonDairy,
you are correct in saying this. I am still wondering the gear selection for said speed for this off road riding he is hearing the noises. If any of us are in too high of gear sitting about 3000rpm, then quickly apply throttle it will be lugging more then accelerating. I remember seeing one video where a guy on a Tenere was off road riding and he was staying between 5000-and redline, probably closer to 6k-redline. This is truely where the bike opens up the power. I don't get enough opportunites to ride a series of roads where my rpm's stay above 5k. It is awesome to feel this and how well the bike responds. By no means is this thing going to self destruct running at times like this. Do this all day bouncing off red-line and we may see some catastrophic meltdown!!!

Jeff

 

[JHKolb]

Well this has been an interesting read for sure. Some posts seem to stray from the normally friendly attitude here which seems out of the norm.

As far as the issue at hand, seems like an issue to me. I can run my ST down to a few hundred RPM in 3-4 gear and hit WOT with no lugging, have been down to low RPM in 6th once and it did lug hard but pulled up the RPM's fairly smoothly. Coming from my VFR I tend to ride in the higher RPM range myself, but I have not had the chance to do any off-highway miles yet so can't compare directly to low RPM riding in a higher gear. I do notice a kind of engine-slap sound on mine, sounds like my old Honda Rincon which was a 650 single and had the same kind of sound to it.

What I can say is I do actually know Dave (now that I know the screen name - LOL) and have witnessed his skill at driving off-road, very technical and not a gun and go kind of guy. So maybe give him a chance and stop judging his riding style, it may just be an issue with that bike?

 

[EricV]

As far as the issue at hand, seems like an issue to me. I can run my ST down to a few hundred RPM in 3-4 gear and hit WOT with no lugging,

I'm impressed. Idle is 1050 rpms or so. :

VFR eh? Nuff said.

 

[dcstrom]

I'm pretty sure the knock the OP is talking about is the same as the one I've heard - and I think I can replicate it. Might have to take the video camera out tomorrow and see if the mic will pick it up... actually come to that, the iPhone recorder should get it as well. Video would be better though cos you can see what I'm doing when it happens. Will see what I can come up with.

Trevor

 

[Kevhunts]

I recall early on, I got in a situation where I was going too slow in too tall a gear and when I got on the gas, the engine protested with a rattle/ping/knock. This was the one & only time this happened and I attribute it to lugging the engine which is a... ::005::

 

[Brntrt]

My knocking happens in TC1 and TC2 getting on it during a power slide. It even does it in first gear. Yes I run premium fuel. The same cranking of the throttle with good traction on pavement, no knocking. I still think its linked to traction control.


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Mark

 

[hANNAbONE]

...lower gear, revs up -- I'd be willing to bet it goes away, "mysteriously"

and "yes" go to your dealer and make sure everything checks out.

 

[markjenn]

My knocking happens in TC1 and TC2 getting on it during a power slide. It even does it in first gear. Yes I run premium fuel. The same cranking of the throttle with good traction on pavement, no knocking. I still think its linked to traction control.

Sounds like it IS the traction control.

- Mark

 

[cosmic]

Every s10 sounds that way Accelerating from low rpm's...every, particulary with tc's ON.
IMO, there's nothing to worry about.




©

 

[Firefight911]

I do wish the snow would melt!


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[Don in Lodi]

My knocking happens in TC1 and TC2 getting on it during a power slide. It even does it in first gear. Yes I run premium fuel. The same cranking of the throttle with good traction on pavement, no knocking. I still think its linked to traction control.

Mark

As noted, that is the traction control kicking in. Somebody else might know, the TCS takes away either spark or fuel. Makes for all sorts of weirdness.

 

[dcstrom]

Ok so I tested for the knock in the same place/style where I know I've heard it before. I won't post the vid cos it shows me doing something like 3x the posted limit (damn that big digital readout! ::025:. But it's great this bike is quick when you really lean on the throttle...

End result is - I didn't hear the knock. I was in sport/TCS1 with the TCS light flashing like crazy, and no knock. The last time I heard it, I was running regular gas, and the first thing I thought was that it was pinging - but nothing like the rattly sound I've heard on my other bikes - more like a heavy knock from deep inside the engine. That's why I thought it wasn't pinging.

At the moment I'm running mid-grade, and I can't reproduce that noise. So I have to conclude... that's what pinging sounds like on this bike. Is that possible? Anyone ever heard a ping that sounds like a knock?

On the positive side - the MotoGP season is about to start. Woo Hoo! Watching FP3 from Qatar right now...


Trevor