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250 running on 1 cylinder

  • Thread starter Thread starter Jimbob
  • Start date Start date
J

Jimbob

Guest
Hi Chaps

I have just got a GS250 Bobber which has sat for around a year. I got it running but the right side cylinder will on fire if i cover the air intake. It has spark and compression and i have cleaned the carbs but it still wont fire.
Any ideas?

Thanks
Jim
 
We need more info, have you cleaned the carbs "PROPERLY" ? Have you got an air box or pod filters of some sort on it? Was it originally jetted when it was cut up,? What exhaust system is on it if any? Last but not least have you tried the search function here on the site? It will answer all of your questions.
 
Your carb cleaning was likely lacking...... idle circuit on right side carb is probably plugged. Blocking air intake (while left is running) puts more vacuum on carb passages- fuel can now find a way up into carb throat.
The idle circuit passages on these carbs are tiny- once gunked up, they need serious cleaning. New-to-you bike means maintenance- have you seen this stuff ?

http://members.dslextreme.com/users/bikecliff/images/GSR_Greeting.html
 
Thanks for the reply.As far as i am aware i have cleaned the carbs properly. The exhaust is straight through pipes and i have checked and reset the tappets. I have read that the entire pilot jet comes out but not sure how its done. is it a case of just pushing it out??
 
not clean

not clean

Jimbob said:
Thanks for the reply.As far as i am aware i have cleaned the carbs properly. The exhaust is straight through pipes and i have checked and reset the tappets. I have read that the entire pilot jet comes out but not sure how its done. is it a case of just pushing it out??
Click to expand...

If you didn't take your jets out when you cleaned them, you didn't clean them properly. They should be completely disassembled, and everything but rubber components should have a full 24 hour dip in Berryman's or a similar product.
 
Dip the float bowls too. The fuel feed for the choke comes from a little well in the float bowl, it usually is the first thing to clog. Make sure the little passage is clear.
 
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