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

mc18 cold start


Reply to topic   printer-friendly view
Page 1 of 1   Download Topic





k3

 
Posts: 33
Joined: 29 May 2007

Location: Manila
    Send private message View user's profile Visit poster's website Yahoo Messenger
    Reply with quote  

mc18 cold start

Wed Oct 10, 2007 1:00 am » Post: #1 » Download Post

at last im in to this wonderful site(thanks andy), i own a 1989 mc18, busted servo motor and RC valves are set to full open, powerless below 4K rpm but it rockets when it reaches 4K, the problem is when the bike was kept lets say for a week in the garage when started, it will hit 5K to 8K rpm for several seconds before it settle on 1200, is this normal?im still running with the oil pump.
_________________

You dont earn respect in one day, you earn it day by day
Back to top


RobH

 
Posts: 1166
Joined: 24 Feb 2007

Location: Chippenham, Wiltshire, UK
1988 Honda NSR250 MC18
    Send private message View user's profile
    Reply with quote  

Wed Oct 10, 2007 8:10 pm » Post: #2 » Download Post

Mine's not quite as bad, but it started doing this after I increased the idle so it would idle at 1200 when it was warm.
Back to top


k3

 
Posts: 33
Joined: 29 May 2007

Location: Manila
    Send private message View user's profile Visit poster's website Yahoo Messenger
    Reply with quote  

Thu Oct 11, 2007 5:58 am » Post: #3 » Download Post

c'mon guys help me with this one. Very Happy
_________________

You dont earn respect in one day, you earn it day by day
Back to top


alannsr250

 
Posts: 135
Joined: 12 Jun 2007

Location: South west wales
    Send private message View user's profile Send e-mail Visit poster's website MSN Messenger
    Reply with quote  

Thu Oct 11, 2007 7:01 am » Post: #4 » Download Post

its normal if u set the valves to stay open.
_________________
Honda nc23 CBR400 AERO 1986, 1990 honda NC23 Tri-Arm, 1987VFR400 NC24 Rothmans Rep, NSR250 MC16 1987, CL250s 1983. Moto guzzi zigolo 110cc 1958. Fantic 50cc 1972. Suzuki Cobra Race bike 500cc 2t 1975 , GP125 1975. Triumph T110 1954. BSA Thunderbird 1955. Ariel VB 600 1952, 1990 MuZ 125 etz.
Back to top


k3

 
Posts: 33
Joined: 29 May 2007

Location: Manila
    Send private message View user's profile Visit poster's website Yahoo Messenger
    Reply with quote  

Thu Oct 11, 2007 9:30 am » Post: #5 » Download Post

okay thanks alan, there will be no problem i guess for the lubrication, unlike to a 4 stroke its a big no-no to hit that rpm on a cold start.
_________________

You dont earn respect in one day, you earn it day by day
Back to top


Alwyn

 
Posts: 41
Joined: 26 May 2007

Location: Cape Town, South Africa
    Send private message View user's profile Send e-mail
    Reply with quote  

Thu Oct 11, 2007 11:11 am » Post: #6 » Download Post

k3, I have the same "problem" with my mc18. I think its the computer that advances the ignition a little to heat the engine up quickly. Since you have a 2 stroke, its no problem. The oil pump has a solenoid attachd to it that increases the rate of oil flow to the carbs when cold to remedy cold-start wear.

Dont wory about it, its normal, but just check if your idle setls at 1500 +- when its hot.
Back to top


tiago

 
Posts: 18
Joined: 23 Sep 2005

    Send private message View user's profile
    Reply with quote  

Thu Oct 18, 2007 10:42 pm » Post: #7 » Download Post

same with my 18. busted rc valves set fully open. erratic idle on start-up but settles to about 1300 rpm when warmed up.
Back to top


k3

 
Posts: 33
Joined: 29 May 2007

Location: Manila
    Send private message View user's profile Visit poster's website Yahoo Messenger
    Reply with quote  

Fri Oct 19, 2007 1:09 am » Post: #8 » Download Post

yeah and it smokes like a fogging machine Laughing and the neigbors will be shouthing wutta****!!!! Laughing
_________________

You dont earn respect in one day, you earn it day by day
Back to top


Reply to topic   printer-friendly view
Page 1 of 1   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