1982 cb650sc vb44c pilot screw idle adjustment help

If it's broken or just needs tweaked

Moderators: Volker_P, tidd650

cmouta
Posts: 74
Joined: Tue Aug 14, 2012 8:23 am
Location: West Haven, CT

1982 cb650sc vb44c pilot screw idle adjustment help

Postby cmouta » Thu Oct 25, 2012 8:27 pm

Posted this on sohc/4 but would be nice to have this info here as well

I tried to dial in my mixture today following the clymer manual and I think I'm an idiot. Can I explain what I think the manual is telling me? It seems like I'm just riching the hell out of my engine and running it hot.
Page 206

3. Lightly seat pilot screws, 1.5 turns out

7. Set idle to 1050+-50 with idle adj screw

8. Turn each pilot screw out 1/2 turn from step3 setting. (All of them???)

9. If speed increases by 50rpm or more, keep turning out by a half until rpms drop by 50( why would it eventually drop 50rpm if i keep enriching it? Wouldnt i just achieve max idle? again, all four at once? I was doing all four at a time and speed kept increasing and the oil I'm leaking from head really starts smoking so I quit and go back to 1.5turns)

10. Adjust idle screw to 1050rpm (if I'm supposed to be doing Max idle 1 at a time, do I do this after each Max idle Carb adjustment or after all 4 reach Max idle)

11. Turn no.1 pilot screw in(lean) until speed drops 50rpm

12.turn out 1 full turn

13. Adjust idle to 1050

14. Repeat 11-13 for other carbs
Chris

1982 Candy Flair Blue Honda CB650SC Nighthawk
2006 Bajaj Chetak 4T with scooterworks usa sidecar
2013 Fiat 500C Abarth
1988 Mono Rosso Red Merkur XR4Ti T5 MT

Return to “Technical Discussion”

Who is online

Users browsing this forum: No registered users and 40 guests