September 9th, 2010, 01:20 AM | #41 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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after searching the web and talking with twowheel guy, the outcome was forget the 1T and 2T marks and just get the lobes in the right position and adjust them individually. thats what he said and to make sure i did a full night of research (about 6 hrs) and found multiple sites/videos that that confirmed you dont have to have them in TDC-the 1T and 2T mark to adjust them properly, just make sure the lobes are opposite the rockers to measure and adjust
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September 9th, 2010, 01:52 AM | #42 |
Join Date: Nov 2008 Posts: Too much.
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so, essentially, the manual is wrong?
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September 9th, 2010, 01:52 AM | #43 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
it will let me take off with full choke on but still doesnt let me take off with under 5k RPMs(under 5k it takes me maybe 2ft and it sounds like it boggs and then dies) in the morning im gonna take the carbs completely apart again and clean everything out again |
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September 9th, 2010, 02:00 AM | #44 |
Join Date: Nov 2008 Posts: Too much.
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needless to say, remove the pilot jets and pay particular attention to the pilot jets themselves and the passageways to which they screw into. blow th passageways out with compressed air from the engine side of the carb in towards the carb body.
also, double check your diaphragms closely to make sure they are not pinched or have tears. lastly, recheck the float levels and try shaking the floats to make sure they aren't full of fuel. |
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September 9th, 2010, 02:01 AM | #45 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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i donno, i saw a youtube video of someone adjusting their valves(on my exact same bike) and when they turned it to the 1T mark their lobes were facing each other(like mine) but that contradicts what my manual says: my manual says that they should face away from each other(one lobe facing intake and one lobe facing exhaust)
but like i said i found multiple FAQ sites that said that the 1T and 2T marks for adjusting are really confusing and the easiest way to do it is just turn the crank until they are in the position you want them and adjust them individually im really confused about it as well; when i took her for a test ride after i adjusted the valves everything seemed to be normal if not better than before i hope i didnt mess anything up; but i dont think i did |
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September 9th, 2010, 02:03 AM | #46 |
Join Date: Nov 2008 Posts: Too much.
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If you did what Craig recommended, I wouldn't worry about it being messed up. He knows his stuff.
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September 9th, 2010, 02:05 AM | #47 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
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September 9th, 2010, 02:07 AM | #48 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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September 9th, 2010, 02:12 AM | #49 | |
Join Date: Nov 2008 Posts: Too much.
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Quote:
can't hurt, just keep track of where you set it to so you can get it back to the original settings when you're through. |
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September 9th, 2010, 02:20 AM | #50 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
i feel like i wanna play with that a little before i take the carbs out again, and if i mess it up then i can set em back to factory setting easier with the carbs off than i can with them on the bike |
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September 9th, 2010, 02:27 AM | #51 |
Join Date: Nov 2008 Posts: Too much.
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if you've been starting the bike and just idling around w/o putting any type of load on the engine, I wouldn't be surprised if the plugs were black/sooty. were they wet with fuel or oily looking or a dry black color? any signs of carbon buildup that could indicate fouling?
btw, what plugs did you use? adjust the mixture screws both ways and see if turning them in any direction helps the problem you're having. IMHO, it's not your problem as 2 1/2 turns is in the ballpark and you should be able to at least idle w/o the bike dying. you have adjusted the idle speed control knob to idle at about 1500 rpm after the bike has been fully warmed up, right? |
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September 9th, 2010, 02:44 AM | #52 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
i am using NGK CR8HSA plugs(thats what i read i should use) the old ones that were in the bike when i got it were NGK C7HSA. i have the bike idle around 2k, a little less most of the time, but i havent looked at the idle when the bike was warm(because i havent really had it fully warmed up) the bike idles just fine(it takes 1-5 sec. for it to catch idle) the problem is when i drop it down into first, i used to be able to let off the clutch slowly and it would take me a few feet, such as to the end of my driveway, then i could give gas and take off. but now if i drop it into first and let out the clutch at all without having 5k rpms it sputters and dies. |
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September 9th, 2010, 03:07 AM | #53 |
Join Date: Nov 2008 Posts: Too much.
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is your air cleaner element clean? as an experiment, try removing it from the airbox and see if the bike improves. nothing long, just around the block will do.
are the jets in the carbs stock sizes? |
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September 9th, 2010, 03:22 AM | #54 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
as far as the jets i would assume they are the stock jets( i have not verified that), there are no mods to my bike(so i would assume they are stock), but i dont know if the previous(previous) owner changed them or not(thinking it would improve anything), the guy i bought it from got given the bike by one of his buddies who had to ship out over seas and had no knowledge of the bike what so ever.( he actually thought it was a 500 instead of a 250) |
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September 9th, 2010, 03:36 AM | #55 |
Join Date: Nov 2008 Posts: Too much.
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if/when you work on the carbs next, check the jets. they have numbers lightly engraved on them that tell you what size they are. It's always good to know what's in the bike, especially when you're not the original owner.
lemme know how the bike runs w/o the filter element in it. also when you're near the airbox, check for loose hoses and clamps around the airbox and carbs. something fishy is going on. |
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September 9th, 2010, 03:52 AM | #56 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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whenever i bought the bike it was in the guys garage with everything except the headlight, radiator, carbs and engine taken off the bike. he had a big pile of nuts and bolts and such, as i was putting it all back together i noticed it only had 1 of the 8 airbox screws. so i only have one screw and the airbox cover keeping the airbox together( drove fine like that after i got it put back together) but do you think it missing 7 of the 8 airbox screws has anything to do with it? i am also missing like 3 metal clamps to hold on the hoses( but up until now i havent had any problems.
think any of that could be the fish? |
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September 9th, 2010, 03:59 AM | #57 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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also this little fella has one of the screw holes(that the screw goes through) the bottom is broken off, but there was still enough on the top side of the screw hole for me to think i got it down tight enough. not sure if theres a small air leak there or not. i havent noticed it whistling or releasing air or anything
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September 9th, 2010, 04:25 AM | #58 |
ninjette.org certified postwhore
Name: Sean
Location: Mary Esther, FL
Join Date: Jan 2009 Motorcycle(s): 2008 Ninja 250 1998 HD Road King Posts: A lot.
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How far out of spec were the valves?
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September 9th, 2010, 04:32 AM | #59 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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September 9th, 2010, 04:40 AM | #60 |
ninjette.org certified postwhore
Name: Sean
Location: Mary Esther, FL
Join Date: Jan 2009 Motorcycle(s): 2008 Ninja 250 1998 HD Road King Posts: A lot.
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It has to be a carb issue then. Do you have an air compressor? If not I have a small one I can bring over tonight. Also you may want to try running a bit of Seafoam through the carbs. I may have a can of that lying around also. Let me know
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September 9th, 2010, 04:52 AM | #61 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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ive got a big air compressor but i cant find my attachments for it
im gonna take the air filter out like kkim suggested and see what happens, if it doesnt help im gonna play around with the pilot screws, if that doesnt work im gonna take the carbs back apart again ill keep ya updated thanks. |
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September 9th, 2010, 04:55 AM | #62 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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i can still ride it, and an auto part store is like 5 miles away so i can pick up my own bottle of Seafoam; i try not to take from others if i can avout it
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September 9th, 2010, 05:01 AM | #63 |
ninjette.org certified postwhore
Name: Sean
Location: Mary Esther, FL
Join Date: Jan 2009 Motorcycle(s): 2008 Ninja 250 1998 HD Road King Posts: A lot.
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It's not a problem. If you do use some seafoam just use a little. That stuff will have your bike smoking up the whole place. If I can help just ask.
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September 9th, 2010, 07:31 AM | #64 |
ninjette.org sage
Name: Marc
Location: Crawfordville, Florida
Join Date: Jan 2010 Motorcycle(s): 2005 Suzuki S50, 2006 Kawasaki Ninja EX250F, 1990 Honda PC800, 2000 Yamaha TW200 Posts: 848
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It doesn't help to post the same problem in 2 threads - it leads to confusion and redundancy trying to answer you. You also may have to wait a day to get responses, it's not instantaneous.
Any way to combine these 2 threads to make it easier on everyone? |
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September 9th, 2010, 11:58 AM | #65 | |
Join Date: Nov 2008 Posts: Too much.
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Quote:
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September 9th, 2010, 04:00 PM | #66 |
ninjette.org dude
Name: 1 guess :-)
Location: SF Bay Area
Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much.
Blog Entries: 7
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Yup, good call.
/threads merged
__________________________________________________
Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered) |
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September 10th, 2010, 01:10 AM | #67 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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September 10th, 2010, 10:39 AM | #68 |
ninjette.org dude
Name: 1 guess :-)
Location: SF Bay Area
Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much.
Blog Entries: 7
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No worries - it seems that people started following both of them at the same time, and while it might not seem like it, getting better results happens when all the relevant content is in one place. Not only helps with the current problem, but makes it easier for people in the future to find threads that have the whole story and hopefully with included solutions. Hope it works out!
__________________________________________________
Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered) |
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September 10th, 2010, 02:27 PM | #69 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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September 10th, 2010, 02:33 PM | #70 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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so far:
-valves are adjusted within spec -carbs were overhauled and cleaned: new floats, float needles, bowl gaskets, pilot screws(with in spec), and i replaced all the hoses on it -carbs have been synced -running seafoam through it -tried without the airfilter- with no change anything else i can try? |
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September 10th, 2010, 02:35 PM | #71 |
Join Date: Nov 2008 Posts: Too much.
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ah, okay... couldn't place it from your pic, but isn't it also known as a coasting enrichener? if so... http://faq.ninja250.org/wiki/How_a_c...a_Closed_Mouth
if yours is not functioning properly, that could well be the source of your problem. |
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September 10th, 2010, 02:45 PM | #72 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
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September 10th, 2010, 02:52 PM | #73 |
Join Date: Nov 2008 Posts: Too much.
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if it's affecting the vacuum to the carb diaphragms, it could.
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September 10th, 2010, 02:55 PM | #74 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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September 10th, 2010, 02:58 PM | #75 |
Join Date: Nov 2008 Posts: Too much.
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maybe the crack got worse and it's leaking more now? I dunno... you're looking for a cause why the bike doesn't run properly, I think you should fix anything broken that can possibly have any affect on the bike to rule them out.
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September 10th, 2010, 02:59 PM | #76 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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i agree i am shopping as we speak
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September 10th, 2010, 03:01 PM | #77 |
Join Date: Nov 2008 Posts: Too much.
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how bad is the leak/crack? maybe you can seal it up with some RTV/superglue until a new part arrives or to experiment?
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September 10th, 2010, 03:18 PM | #78 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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i just talked to my friend/local mechaninc show and they said that may caues problems but it would only cause problems when letting off the throttle, not when im trung to take off.
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September 10th, 2010, 03:20 PM | #79 |
Join Date: Nov 2008 Posts: Too much.
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okay.
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September 10th, 2010, 03:20 PM | #80 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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side note my jets are the right size
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