93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done!

DakotaEight · 05-22-2015, 09:00 AM

G1-G9 (tom) I purchased and installed a choke kit for the tuned carb last year. I had it running last year to where it would idle and run better than now but still not perfect. The gasoline is new also. I do have a barb at the top of my valve cover but I havent checked if oil got into it. I will check that out. Thanks...I will let you know the updates later today. Its mighty cold out here today. lol

G1-G9 · 05-22-2015, 09:37 AM

Maybe there is something in the carb?

DakotaEight · 05-22-2015, 11:38 AM

When i check the other things later and if nothing works, ill take the carb off and clean it. Thanks Tom

DakotaEight · 05-22-2015, 02:01 PM

Tom, it was oil in the pulse vacuum line. I now have the line going upwards from the valve cover so oil wont make it down to the front. It runs pretty good now! I do have a slight backfire but im going to have to put the drive belt on it and take it for a ride to see how it all responds. I cant thank you enough G1-G9. I think im going to have a WONDERFUL summer with my lady now. Smile. I will get back to you about this in an email. Thanks again to everyone who gave input.

DakotaEight · 06-08-2015, 08:33 AM

https://www.youtube.com/watch?v=IRRw...ature=youtu.be

TheNewGuy · 06-09-2015, 05:28 AM

Looks and sounds good! You may want to go back to the stock spring in your driven clutch. You really don't need a torque spring with that engine.

DakotaEight · 06-09-2015, 09:06 AM

@TheNewGuy.....Torque isnt my problem. How would the secondary spring make a difference in the way it idles and midrange?

TheNewGuy · 06-09-2015, 12:02 PM

Quote:

Originally Posted by DakotaEight

@TheNewGuy.....Torque isnt my problem. How would the secondary spring make a difference in the way it idles and midrange?

Sorry, this was not a solution to any problems you may be having, just an observation.

theboss20 · 06-09-2015, 01:06 PM

I think you have a vacuum leak based on the way it won't idle and smooths out at higher RPM....a guess based on years of experience...you should be able to spray WD40 around the carb and see if the engine RPM's go up.

DakotaEight · 06-09-2015, 01:39 PM

Ill give the WD40 a try, and thank you all for your help so far.

05-22-2015, 09:00 AM	#11
DakotaEight Getting Wild Join Date: May 2013 Location: Northeast Michigan Posts: 141	Re: 93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done! G1-G9 (tom) I purchased and installed a choke kit for the tuned carb last year. I had it running last year to where it would idle and run better than now but still not perfect. The gasoline is new also. I do have a barb at the top of my valve cover but I havent checked if oil got into it. I will check that out. Thanks...I will let you know the updates later today. Its mighty cold out here today. lol

05-22-2015, 09:37 AM	#12
G1-G9 LIFE IS TAKING FOREVER Join Date: Apr 2010 Location: DANSVILLE NY Posts: 5,327	Re: 93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done! Maybe there is something in the carb?

05-22-2015, 11:38 AM	#13
DakotaEight Getting Wild Join Date: May 2013 Location: Northeast Michigan Posts: 141	Re: 93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done! When i check the other things later and if nothing works, ill take the carb off and clean it. Thanks Tom

05-22-2015, 02:01 PM	#14
DakotaEight Getting Wild Join Date: May 2013 Location: Northeast Michigan Posts: 141	Re: 93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done! Tom, it was oil in the pulse vacuum line. I now have the line going upwards from the valve cover so oil wont make it down to the front. It runs pretty good now! I do have a slight backfire but im going to have to put the drive belt on it and take it for a ride to see how it all responds. I cant thank you enough G1-G9. I think im going to have a WONDERFUL summer with my lady now. Smile. I will get back to you about this in an email. Thanks again to everyone who gave input.

06-08-2015, 08:33 AM	#15
DakotaEight Getting Wild Join Date: May 2013 Location: Northeast Michigan Posts: 141	Re: 93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done! https://www.youtube.com/watch?v=IRRw...ature=youtu.be

Today
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06-09-2015, 05:28 AM	#16
TheNewGuy Admin/Moderator Join Date: Dec 2006 Location: Ohio Posts: 18,042	Re: 93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done! Looks and sounds good! You may want to go back to the stock spring in your driven clutch. You really don't need a torque spring with that engine.
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06-09-2015, 09:06 AM	#17
DakotaEight Getting Wild Join Date: May 2013 Location: Northeast Michigan Posts: 141	Re: 93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done! @TheNewGuy.....Torque isnt my problem. How would the secondary spring make a difference in the way it idles and midrange?

06-09-2015, 01:06 PM	#19
theboss20 Gone Wild Join Date: Jun 2014 Location: Green Valley, Az Posts: 678	Re: 93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done! I think you have a vacuum leak based on the way it won't idle and smooths out at higher RPM....a guess based on years of experience...you should be able to spray WD40 around the carb and see if the engine RPM's go up.

06-09-2015, 01:39 PM	#20
DakotaEight Getting Wild Join Date: May 2013 Location: Northeast Michigan Posts: 141	Re: 93 Yamaha G9/HF Honda Clone 420cc/rebuild almost done! Ill give the WD40 a try, and thank you all for your help so far.

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