Help & FAQs    Search BCF    Members    Groups    Events Calendar
Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


NSR125RN - been stood, won't start

 Reply to topic
Bike Chat Forums Index -> The Workshop
View previous topic : View next topic  
Author Message

synthdemon
L Plate Warrior



Joined: 21 May 2004
Karma :
PostPosted: 16:35 - 21 May 2004    Post subject: NSR125RN - been stood, won't start Reply with quote
HELP!!! My beloved bike has been stood for a few months, have charged battery (alternator works). Have changed petrol. Have checked airbox and carb. It's trying, and the pistons move when pushed in first gear. Evil or Very Mad

I need to get this bloody thing sold quick so any help would be appreciated.......

1993 NSR125RN Italian Import (exhaust dead, fork seals dead, chain/sprockets dead) no t or t

(If anyone is interested, the bidder on ebay fell thru) contact me for more info Thumbs Up

Ta, Pete
____________________
I didn't steal your fridge man.
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

jimbo
Borekit Bruiser



Joined: 23 Aug 2003
Karma :
PostPosted: 19:17 - 21 May 2004    Post subject: Reply with quote
0). Is the side-stand up, and is it in neutral and is the engine kill-switch on run?
1). Check for a spark. If no spark could be:
Dirty sparkplug.
Dodgy/corroded kill switch/side-stand switch/clutch switch/ignition switch. Check for obvious corrosion, give them a squirt with WD40 or disconnect them.
Dodgy coil, loose HT lead, loose sparkplug cap.
Dodgy CDI (unlikely if it was working before storage)

2).Check to see if the sparkplug is damp after you've been turning it over for a bit. If not, probably fuel.
Check fuel tap.
Check fuel filter.
Check fuel line.
Check to see if carb float bowl is filling. Make sure the carb bowl is drained of old fuel. If it's full of good fuel, you might have a clogged jet or water in the float bowl. Strip it down, clean it out.

If still no luck, then hard-wire the starter motor to the engine kill switch and sell it as an electric bicycle. Karma Very Happy
 Back to top
View user's profile Send private message You must be logged in to rate posts

synthdemon
L Plate Warrior



Joined: 21 May 2004
Karma :
PostPosted: 20:21 - 21 May 2004    Post subject: NSR125RN Reply with quote
Ta Jimbo.........

Weak/intermittent spark - have WD'd the switches, slightly loose HT lead - still not damp though. Will rip apart float bowl tomorrow and pick up a new plug - hangover pending.

Pete
____________________
I didn't steal your fridge man.
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Valentino Mossy
World Chat Champion



Joined: 13 Jul 2003
Karma :
PostPosted: 20:49 - 21 May 2004    Post subject: Re: NSR125RN Reply with quote
synthdemon wrote:
Ta Jimbo.........

Weak/intermittent spark - have WD'd the switches, slightly loose HT lead - still not damp though. Will rip apart float bowl tomorrow and pick up a new plug - hangover pending.

Pete


Hold up !
If you got a WEAK SPARK try this.
When my bike had a top end done I fecked up the pick up coil by the flywheel thing. (on the left hand side of the bike, should be next to the front sprocket.)
Check that if it sparks, if not move it SLIGHTLY closer and kick start it.

My problem with a weak spark was off a ns125r 90' model.
I replaced ht leads,cdi,regulator,plugs,coils etc.. and it turned out it was'nt sparking right at the pick up !
I found that out after one of the guys from off the forum came over to have a look at it.
____________________
Ducati 916,white framed corse replica https://www.bikechatforums.com/viewtopic.php?t=239309
Ducati 160 monza jnr soon to be cafe racer
https://blauschatfroums.freeforums.net/
 Back to top
View user's profile Send private message You must be logged in to rate posts

jimbo
Borekit Bruiser



Joined: 23 Aug 2003
Karma :
PostPosted: 21:17 - 21 May 2004    Post subject: Reply with quote
Quote:
When my bike had a top end done I fecked up the pick up coil by the flywheel thing.

that can happen, but the pick-up coil won't move by itself. So if the bike was just left standing it's unlikely to be a problem.

Quote:
Weak/intermittent spark

Could be your problem, but the spark may be weaker if the engine isn't spinning fast, and intermittent because it's hard to look at the plug and kick or spin the engine at the same time!
If the engine didn't flood while you were trying to start it (damp/wet sparkplug and petrol smell from sparkplug hole/exhaust pipe) then it looks like the fuel system.
If the main jet is blocked (remove it and try to blow down it) you'll probably have to get some carb crap dissolver and soak it, then blow clean with compressed air (at garage or with bicycle pump!). Can also clean it with a fine wire if you're stuck, but this isn't recommended as it can damage the jet.
Also check the float pin, as this can bind in it's seat and stop the float bowl from filling.
If petrol is allowed to evaporate in the carburettor, it leaves a thin film of shellac that clogs the jet and can bind the float. A good soak in carb cleaner normally clears it up. Karma
 Back to top
View user's profile Send private message You must be logged in to rate posts

synthdemon
L Plate Warrior



Joined: 21 May 2004
Karma :
PostPosted: 15:11 - 22 May 2004    Post subject: NSR125RN Reply with quote
Thanx ppl - the beyotch works!!! haha

I Motraxed the carb and dislocated a finger putting the air box back on - expecting that the electric bicycle option was my only saving grace - kerchunk!!!! cue much jumping around and "fookin yeahs!".

Ta for all your help guys - when I get my Blade i'll know who to turn to...........

Pete.
____________________
I didn't steal your fridge man.
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts
Old Thread Alert!

The last post was made 21 years, 99 days ago. Instead of replying here, would creating a new thread be more useful?
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> The Workshop All times are GMT
Page 1 of 1

 
 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

Read the Terms of Use! - Powered by phpBB © phpBB Group
 
Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.08 Sec - Server Load: 0.93 - MySQL Queries: 13 - Page Size: 50.46 Kb