April 15th, 2009, 11:47 AM | #1 |
Too sexy for roadrash
Name: Travis
Location: SoCal
Join Date: Aug 2008 Motorcycle(s): 2004 Ninja 250, 2007 Lance GS-R 150 (racing modified scooter), 1980 Honda CB750K project Posts: 89
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bogging down, help please
So here's how it went down.
I was on my way to school this morning, in the carpool lane doing about 70mph when I noticed my rpm's were a little high for the speed I was going. I didn't think much of it, because I was heading into a 30+ mph headwind. Anyway, a few miles later, and about 25 miles into my ride, the engine just totally bogged down, like I had run/was running out of gas. But I wasn't! I had a half a tank still!!! Now, I am left with a bike that runs fine, revs fine, even runs good on the stand. But any time I try to run it on the street (i.e. under load) its will be fine to about 20 mph, then just bog down. I still accelerates, but about as hard as a 50cc scooter, though I can still reach higher speeds like in the 60+mph range. Any ideas? The only things I've done to the bike is a 15 tooth front sprocket about 3 weeks ago (other than maintenance). I'm thinking of just taking it to a mechanic, but I want to see if it might be an easy fix first. So in summary the symptoms are: -bogging at speed -runs fine unless under load Any help would be greatly appreciated! Travis
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I'm too sexy to get roadrash, that is why I wear my gear all the time. If you are not as sexy as me, then maybe you can get away without it. ~Unofficial ninjette.org fish smacker~ |
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April 15th, 2009, 12:26 PM | #3 |
Too sexy for roadrash
Name: Travis
Location: SoCal
Join Date: Aug 2008 Motorcycle(s): 2004 Ninja 250, 2007 Lance GS-R 150 (racing modified scooter), 1980 Honda CB750K project Posts: 89
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Yeah, I checked there first, there wasn't anything on there that was even remotely similar to my problem. Thanks anyway though!
Travis
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I'm too sexy to get roadrash, that is why I wear my gear all the time. If you are not as sexy as me, then maybe you can get away without it. ~Unofficial ninjette.org fish smacker~ |
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April 15th, 2009, 01:10 PM | #4 |
Ms. Personality
Name: CB
Location: Murvill, TN
Join Date: Jan 2009 Motorcycle(s): Depends on the week you ask Posts: A lot.
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I'm pretty sure that's what Jimi's (KnoxNinja) bike is doing too. I don't think he resolved it yet.
Perhaps the petcock has gone bad...? |
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April 15th, 2009, 01:16 PM | #5 |
Too sexy for roadrash
Name: Travis
Location: SoCal
Join Date: Aug 2008 Motorcycle(s): 2004 Ninja 250, 2007 Lance GS-R 150 (racing modified scooter), 1980 Honda CB750K project Posts: 89
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It could be the petcock, but it's not very high on my suspect list right now. I'll probably be taking it to a small local mechanic in a few minutes for a diagnosis and possibly/probably to fix it. I can work on my scooter, but I need the bike to badly to be able to tinker with it for a few days. the cage is barely running also, and the scooter just got a rebuild. Seriously, 3 vehicles and none are running good, lol!
Travis
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I'm too sexy to get roadrash, that is why I wear my gear all the time. If you are not as sexy as me, then maybe you can get away without it. ~Unofficial ninjette.org fish smacker~ |
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April 15th, 2009, 01:18 PM | #6 | |
ninjette.org sage
Name: Chris
Location: Norcross, GA
Join Date: Mar 2009 Motorcycle(s): 2006 250R Posts: 772
Blog Entries: 14
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Quote:
just a thought. my vw did this because fuel pump was going out.
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my flickr™ |
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April 15th, 2009, 01:39 PM | #7 |
ninjette.org member
Name: Angelo
Location: North New Jersey
Join Date: Mar 2009 Motorcycle(s): 2009 ninja 250r, black, carbon fiber full exhaust...2000 toyota 4runner Posts: 136
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hmmm hoe dopesnt happen to me
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April 15th, 2009, 03:32 PM | #8 |
Join Date: Nov 2008 Posts: Too much.
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Travis, try filling the tank with gas and see if the problem goes away.
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April 15th, 2009, 04:41 PM | #9 |
ninjette.org member
Name: John-Michael
Location: Texas
Join Date: Aug 2008 Motorcycle(s): 2007 EX250 Posts: 133
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Do you have an aftermarket fuel filter in-line after petcock??
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April 15th, 2009, 09:42 PM | #10 |
ninjette.org sage
Name: Tim
Location: Portland, OR
Join Date: Dec 2008 Motorcycle(s): 2009 SE Ninja 250R Posts: 796
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What have you troubleshooted so far? Switched to prime/reserve, check air intake/filter etc.?
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April 15th, 2009, 11:56 PM | #11 |
Too sexy for roadrash
Name: Travis
Location: SoCal
Join Date: Aug 2008 Motorcycle(s): 2004 Ninja 250, 2007 Lance GS-R 150 (racing modified scooter), 1980 Honda CB750K project Posts: 89
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Did switch to reserve, still had half a tank of fuel, so I know there's fuel in it. The bike was bought used (with only a few hundred miles), so I'm not sure if there's an aftermarket filter in line. I decided that I need it to badly for school and took it to a reputable shop a few miles from my house to diagnos it, then we'll see if they fix it or if I do depending on what it costs.
Another thought that I just picked up from my scooter forum is that possibly one of the main jets fell out. Someone I know was having a problem almost identical to mine, well in scooter form, and his main jet fell out. It does sound fuel related one way or the other... g'night. Travis
__________________________________________________
I'm too sexy to get roadrash, that is why I wear my gear all the time. If you are not as sexy as me, then maybe you can get away without it. ~Unofficial ninjette.org fish smacker~ |
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April 16th, 2009, 06:24 AM | #12 |
motorcycle rider
Name: Bruce
Location: Victoria, BC
Join Date: Apr 2009 Motorcycle(s): '14 Yamaha V-Star 650 Custom (silver) Posts: A lot.
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If you've ruled out bad fuel, then I suspect you have some kind of debris partially clogging a jet in your carbs.
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'14 Yamaha V-Star 650 Custom (silver) |
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April 17th, 2009, 11:11 AM | #13 |
Too sexy for roadrash
Name: Travis
Location: SoCal
Join Date: Aug 2008 Motorcycle(s): 2004 Ninja 250, 2007 Lance GS-R 150 (racing modified scooter), 1980 Honda CB750K project Posts: 89
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seems that the shop thinks it was stuff clogging the cali emissions system, not letting air back into the fuel tank creating a vacuum lock type situation, in addition to getting junk such as carbon from the emissions canister into the carbs and clogging them up somewhat. Should be a couple hundred in labor to fix and then good to go.
Travis
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I'm too sexy to get roadrash, that is why I wear my gear all the time. If you are not as sexy as me, then maybe you can get away without it. ~Unofficial ninjette.org fish smacker~ |
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