When I first get on my bike, I don't seem to have any problems. But when I've been riding it for a while, it seems to spudder when I stop and take off in first gear. Sort of like the fuel isn't consistent. When it's doing it and I press in the clutch and rev it, it sounds fine, but when I let it out, it goes right back to what it was doing before.

Some people say that it's running hot, then others (more experienced) say that it either needs to be jetted or is running too rich.

Anyone have any suggestions?

 

Is your bike stock?

Has it been sitting for a while or anything like that?

 

No, I keep finding out more and more stuff about the bike. The guy that I bought it from (someone I use to work with) isn't helping me by giving me the reciepts from when he had it in the shop. (like a few days before I bought it)

But the bike has a K&N intake, Yoshi exhaust, short shift kit, an altenator or something like that (that's what he had work done to it), and I think a few other things, but I can't remember right now.

I don't think it's been sitting for a while. Also, no black smoke comes out the pipe. I found that out today. (Friend followed me)


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nerdish &raquo;</TD></TR><TR><TD CLASS="quote">Is your bike stock?

Has it been sitting for a while or anything like that?</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DangBruhY &raquo;</TD></TR><TR><TD CLASS="quote">No, I keep finding out more and more stuff about the bike. The guy that I bought it from (someone I use to work with) isn't helping me by giving me the reciepts from when he had it in the shop. (like a few days before I bought it)

But the bike has a K&N intake, Yoshi exhaust, short shift kit, an altenator or something like that (that's what he had work done to it), and I think a few other things, but I can't remember right now.

I don't think it's been sitting for a while. Also, no black smoke comes out the pipe. I found that out today. (Friend followed me)


</TD></TR></TABLE>

If the bike hasn't been jetted since the mods, I would suspect that.

 

Couple things it could be.

Jetting is first but only because you say its been jetted and since the bike came with two jet kits.... well, you do the math.

If the above wasn't the case I'd be firmly pushing the case that there is either water in the carbs or that there is some dirt in the pilot jets.

Hell, could be a combination of both.

 

I'm thinking that it's the jetting. Because the guy (JG) that sold it to the guy (Garth) I bought it from gave him a jet kit and told him to install it. The only problem is that when Garth took it to the Honda shop, they said that it didn't need that jet kit, or to be jetted. Now, all this is second-hand conversation. Honda might not have said that and Garth might have been a slack-a$$ and didn't want to spend the money to have it done, I don't know. But considering his a$$ isn't being very helpfull in telling me everything that he knows about the bike is putting doubts in my head.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HMan &raquo;</TD></TR><TR><TD CLASS="quote">Couple things it could be.

Jetting is first but only because you say its been jetted and since the bike came with two jet kits.... well, you do the math.

If the above wasn't the case I'd be firmly pushing the case that there is either water in the carbs or that there is some dirt in the pilot jets.

Hell, could be a combination of both. </TD></TR></TABLE>

 

If the exhaust is a full system, you'll definatly have to have it jetted. THe sputtering is from lack of fuel. if the exhaust is just a slip-on then you might just need the needles shimmed or at best a little bit richer pilot jet installed.

 

Any mods to the intake and exhaust and you should jet the carbs. It is going to place a different load on the bike, and no matter how slight it might be, it is still going to make a difference. My '98 CBR900RR had this same problem when I modded it identicle to what you have done. Jetting the bike properly solved the problem.

 

idle mixture screws for your unsteady idle. pilot screws for the low engine speed sputtering. The bike is set to run lean there where it has to past emissions and opening up the I/E will have leaned out the mixture even more in that range. It's good in wot b/c the bike is set to run richer up there where it is not tested for emissions.

 

From what I've been hearing from EVERYONE, it sounds like I need to have it jetted. The only thing that is throwing me off is that the guy that I bought it from told me that Honda said that it didn't need to be jetted. But everything is adding up to it being jetted. And YES, it's a full exhaust system, not a slip-on.

One more thing that makes it sound like it needs to be jetted is that the guy gave him a jet kit and told him to have it installed. Why would he do that if it didn't need to be jetted. I think the last performance thing that was done to the bike was a K&N intake. I don't think it's been jetted after that.

 

Even a K&N and slip on generally require some mild tweaking of the idle-air mixture screws and the needle position (not actually jets) for optimal results.

Why a shop WOULDN'T want to do the work is beyond me. Usually the'll take it in, charge you, and then give it back.

Make sure that where you take it to be tuned, they have a dyno and an exhaust gas analyzer. Without the EGA, it just turns into a lot of trial and error.

 

I think the guy I bought it from was being a slack-*** and didn't want to pay for it. I think he just made that story up to explain why he didn't do it. He doesn't know too much about bikes.

I'm going to call the Honda shop and see if they have a dyno, if they do, I'll try to ride over there after work today. If not, then I'm gonna have to call around. Also, if they don't then that might explain a few things as well, because that's where he took it to get "tuned".

Thanks for all the help
-Aaron


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project_mercy &raquo;</TD></TR><TR><TD CLASS="quote">Even a K&N and slip on generally require some mild tweaking of the idle-air mixture screws and the needle position (not actually jets) for optimal results.

Why a shop WOULDN'T want to do the work is beyond me. Usually the'll take it in, charge you, and then give it back.

Make sure that where you take it to be tuned, they have a dyno and an exhaust gas analyzer. Without the EGA, it just turns into a lot of trial and error.</TD></TR></TABLE>

 

<U> !!! UPDATE !!! </U>
The guy at the Honda dealer said that it is DEFFIDENTLY not doing that because of jetting issues. Because it would do it all the time and not just in first.

He thought it was the kill switch on the kick-stand. No dice!

One thing that I didn't mention, because I thought it had nothing do it with the problem is that sometimes when I shift into 5 or 6 gear, the SOB all of a sudden is in Neutral.WTF is up with that? Neutral isn't between 3-4 or 4-5!

Does anyone think that the problem might have something to do with that?

Also, when it spudders, the motor doesn't seem to cut off, just looses power.

 

Welcome to the club of getting hosed on an expensive purchase.

 

The dumb honda dealer should take his own advice a kill switch or side stand switch would do that all the time also. Some dealer done know jack . Jumping out of gear into a faulse neutral will not cause the problem you mentioned or have anything to do with them that is anouther problem altogether.

Take it to a good performance shop (not a dealer) that has a dyno with an exhust sniffer and have it checked out. The dealer is also wrong about it sputtering in all gears it ther low end fuel mixture is very rich or lean at an idle this will only effect it when taking off from a start.

 

You are absolutely CORRECT! I've talked to more people and they all agree that it is probably most DEFFIDENTLY a jetting problem.

The bike starts w/o any choke. WTF is up with that. This one guy I took it to told me that the bike should no way shape or form start w/o the choke. (non-fuel injected) He said that it was the biggest sign, right there. He suggested me take it to this place that thinks they are too good for anyone around. (Because they build racing bikes and think you are a pee-on) Anywho, they do good work and have a dyno w/ an exhaust sniffer. So I'm going to see about taking it over there tomorrow.

My bike pisses me off the more I ride it. I don't know if there are any riders from the Sacramento area, but there was a Ruff Ryders meet in Sac Saturday. My friend has pictures and short movie clips. That was my first "get together". It was cool as hell.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by busa1300 &raquo;</TD></TR><TR><TD CLASS="quote">The dumb honda dealer should take his own advice a kill switch or side stand switch would do that all the time also. Some dealer done know jack . Jumping out of gear into a faulse neutral will not cause the problem you mentioned or have anything to do with them that is anouther problem altogether.

Take it to a good performance shop (not a dealer) that has a dyno with an exhust sniffer and have it checked out. The dealer is also wrong about it sputtering in all gears it ther low end fuel mixture is very rich or lean at an idle this will only effect it when taking off from a start. </TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">The bike starts w/o any choke. WTF is up with that. This one guy I took it to told me that the bike should no way shape or form start w/o the choke. (non-fuel injected) He said that it was the biggest sign, right there</TD></TR></TABLE>

Tell that "one" guy to stay away from the drugs. I've yet to own a bike that won't start without the choke.

 

that bike is sounding like a basket case.

fwiw, my bike would big if a took a little plastic piece off the top of my airbox. completely stock otherwise.

 

mine will not start with the choke, it floods.

 

well, with it starting witht he choke off, spuddering in low RPMs, everything else being sound EXCEPT for the jetting... It sounds like there is only one option... JETTING. I went to Honda to pick up my gloves and got directions to this place that has a dyno and an exhuast sniffer. The owner wasn't there and "Crazy Dan" or some crap doesn't like anything other than Harleys. I was told to go there tomorrow when the owner will be there.

Is your bike having problems? If you might get beter performance if you have it checked out, because bikes are NOT supposed to start w/o the choke. TONS of quality professionals have told me this. People who have been in the business longer than I've been alive. So I take their word.

Have it checked out man.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Malachi &raquo;</TD></TR><TR><TD CLASS="quote">mine will not start with the choke, it floods.</TD></TR></TABLE>

 

yeah, problem is indiana is short on dyno's.

 

Got it jetted... RUNS LIKE A CHAMP! I found out that I have the small core in my exhaust and when I have that taken out, I'll probably have to jet it again. SUCKS! But I rode it in 104 weather yesterday and it wasn't spuddering. So it's looking good.

-Aaron

 

Nice, how much did you end up paying?

 

i was wondering this too, what jet kit did you use?

 

He used a K&N Stage 1 kit. It had a K&N intake and a Yoshi exhaust with the small core in it. So I guess I'm gonna have to get it rejetted when I have the core removed.

I paid $200 for "Dyno-tune"

That's install and tune.
-Aaron