NSR250.net Forums Logo: Honda NSR 250 Forums, Classifieds and Service Manual in English. Covering All Honda NSR 250 MC16, MC18, MC21 and MC28 models
NSR250.net Forums

#
 
#
 
Performance Engineering

  • NSR250 Forums Index ‹ NSR250R Discussion
  • Members Content
  • Members Garage
  • Subscription
  • Transactions
  • FAQ
  • Search
  • Register
  • Log in

Engine stalls


Reply to topic   printer-friendly view
Page 1 of 2  Goto page 1, 2  Next Download Topic





SPENGILLY

 
Posts: 141
Joined: 11 Feb 2004

Location: San Francisco,CA
    Send private message View user's profile
    Reply with quote  

Engine stalls

Fri May 09, 2008 1:52 am » Post: #1 » Download Post

Everytime I put the bike in first gear after it's warmed up it dies. This is while giving no gas, if I give it a little gas it doesn't die but it seems pretty rough going in. All the shifting after the initial step down is fine, Any idea's?
Back to top


fenton
Supporter - Titanium
Supporter - Titanium
 
Posts: 1166
Joined: 13 Oct 2005

Location: not here
1990 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

Fri May 09, 2008 9:15 am » Post: #2 » Download Post

is the clutch dragging ?
Back to top


Dave Ett
Site Moderator
Site Moderator
 
Posts: 3648
Joined: 20 Feb 2004

Location: Gloucestershire, England
    Send private message View user's profile
    Reply with quote  

Fri May 09, 2008 9:32 am » Post: #3 » Download Post

Sidestand switch.
_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

Back to top


bd197
Supporter - Titanium
Supporter - Titanium
 
Posts: 213
Joined: 19 Nov 2007

Location: Leeds, Yorkshire, England
1996 Honda NSR250 MC28
    Send private message View user's profile
    Reply with quote  

Fri May 09, 2008 12:32 pm » Post: #4 » Download Post

i'll have 10pence on the clutch !

Dave.
Back to top


shmokica

 
Posts: 159
Joined: 27 Feb 2008

Location: Brisbane, Australia
1990 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

Sun May 11, 2008 4:21 am » Post: #5 » Download Post

20c on battery.
Back to top


nxrsr20

 
Posts: 919
Joined: 15 Jul 2007

Location: Sydney, Australia
    Send private message View user's profile
    Reply with quote  

Sun May 11, 2008 9:28 pm » Post: #6 » Download Post

Schmokica, I'll raise you 20c Razz

How much gearbox oil you got in it? Smile It should only be 700mL, up to the dipstick marks
Back to top


shmokica

 
Posts: 159
Joined: 27 Feb 2008

Location: Brisbane, Australia
1990 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

Sun May 11, 2008 9:51 pm » Post: #7 » Download Post

Should put some on both ways.. Is it dry or wet clutch? Have you tried adjusting the clutch cable, once moving gear shifting is much easier because everything is spinning, so a clutch that is not fully disengaging can exhibit your symptoms. If it's a dry clutch you may need to check the metal plates as they rust without use and will exhibit this phenomenon.
Back to top


SPENGILLY

 
Posts: 141
Joined: 11 Feb 2004

Location: San Francisco,CA
    Send private message View user's profile
    Reply with quote  

Mon May 12, 2008 12:54 am » Post: #8 » Download Post

Clutch doesn't have many miles on it, if it's dragging, I sure can't feel it.

It's a wet clutch & the oil level is fine. I understand that the gear changing will be eaiser when moving but when I stop at a light & have to put it in first, it's fine. The only time I have a problem is when I put it in first the first time after warmed up.
Back to top


Dave Ett
Site Moderator
Site Moderator
 
Posts: 3648
Joined: 20 Feb 2004

Location: Gloucestershire, England
    Send private message View user's profile
    Reply with quote  

Mon May 12, 2008 11:07 pm » Post: #9 » Download Post

So when it's cold and running with the choke on it's fine? What RPM does the choke hold it at?
_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

Back to top


SPENGILLY

 
Posts: 141
Joined: 11 Feb 2004

Location: San Francisco,CA
    Send private message View user's profile
    Reply with quote  

Tue May 13, 2008 3:25 am » Post: #10 » Download Post

This is what I do when I go for a ride...

-Start bike with choke on, no more than 4 or 5 kicks.
-Bike runs around 3-4k rpm for a min or so. I turn off choke after it will idle on it's own. Put on boots, jacket, helmet, etc. as bike warms up.
- I back out of garage with kick stand up, stop, pull clutch in & put into first. Bike dies.

If I give a little gas, it won't die but doesn't go in smooth.
It's almost like the clutch isn't disengaging all the way.

The thing I don't understand is everytime after this, I can put it in first gear while standing still all day long with no throttle & don't have any issues.
Thanks for the feedback.
Back to top


Dave Ett
Site Moderator
Site Moderator
 
Posts: 3648
Joined: 20 Feb 2004

Location: Gloucestershire, England
    Send private message View user's profile
    Reply with quote  

Tue May 13, 2008 8:39 am » Post: #11 » Download Post

It does sound like the clutch plates are sticking together overnight then. Not unheard of...

What oil, and level do you use? How old are the friction plates?

When selecting first, do you have the front brake on? Try doing it without and see if the bike lurches forward - a sure sign the plates have not fully disengaged.

Try pulling the clutch in two or three times before going for the gear.
_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

Back to top


SPENGILLY

 
Posts: 141
Joined: 11 Feb 2004

Location: San Francisco,CA
    Send private message View user's profile
    Reply with quote  

Wed Jul 02, 2008 4:33 am » Post: #12 » Download Post

I tried pulling the clutch in a few times but it didn't seem to help. After reading a recent post I think I might be running too heavy of an oil. I have been using a 80w oil from Belray. http://www.belray.com/consumer/product.fsp?pid=13636 I've been using this oil for some time now. Confused Should I switch to a lighter weight & see what happens? How will the small amount of old oil mix with new lighter oil?
Back to top


Andy
Site Admin
 
Posts: 11950
Joined: 19 Jan 2004

Location: Devon, UK
1991 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

Wed Jul 02, 2008 2:44 pm » Post: #13 » Download Post

So long as they are both mineral oils, a little 80W mixed with 10/30 engine oil after a drain/refil won't hurt.

Take the bike for a short run first to warm the 80W oil up before draining it.

80W gear oil is far too heavy for the NSR transmission.
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.


Check us out on Facebook! Please "like" our page!
Back to top


SPENGILLY

 
Posts: 141
Joined: 11 Feb 2004

Location: San Francisco,CA
    Send private message View user's profile
    Reply with quote  

Thu Jul 03, 2008 3:15 am » Post: #14 » Download Post

I should be able to switch to a synthetic right? Should I put some lighter weight mineral base in, run for a little while & then switch to the synthetic?

Thanks
Back to top


Andy
Site Admin
 
Posts: 11950
Joined: 19 Jan 2004

Location: Devon, UK
1991 Honda NSR250 MC21
    Send private message View user's profile
    Reply with quote  

Thu Jul 03, 2008 2:31 pm » Post: #15 » Download Post

Only if it says it's suitable for a wet clutch. The synthetic I use specifically states "not to be used in wet clutch transmissions".

I don't know about mixing synthetic and mineral based transmission oils though. If you mix them, then I would strongly advise a proper flush of the system.

Personally, I can't see why you would have a problem using the Honda specified 10/30W oil? Confused
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.


Check us out on Facebook! Please "like" our page!
Back to top


Reply to topic   printer-friendly view
Page 1 of 2  Goto page 1, 2  Next Download Topic

NSR250R Discussion

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

  • NSR250 Forums Index
  • All times are GMT
Powered by phpBB © 2001, 2005 phpBB Group


Hosted by NSR250dotNET © 2008 NSR250dotNET