G1 rebuild

makobuggie · 10-22-2011, 01:15 AM

I think i need to rebuild my 81, g1,it fires but wont stay running, the fuel is getting to the carb, the choke has tobe on for it to run,i dont have a manual yet, is there pounts on it? And whats the best way to line the timeing marks?thanks

GMB74 · 10-22-2011, 04:51 AM

First step: Do a compression test. What are your readings?

caddylac camper · 10-22-2011, 07:02 AM

There are no points on the G1. You have two possibilities here, either you are very low on compression or the idle/slow speed passageways in the carb are blocked. AS GMB stated do the compression test with throttle wide open. If the compression test is ok then have a look at the carb, first making sure your basic adjustment settings are correct and if there is no improvement you will need to clean the carb with carb cleaner. You will have to remove the carb, totally dismantle and clean/soak everything in carb cleaner. If your compression test indicates low compression then a motor rebuild will be required.

makobuggie · 10-22-2011, 07:17 AM

What should comp read? Thanks

Field6565 · 10-22-2011, 06:08 PM

Quote:

Originally Posted by makobuggie

What should comp read? Thanks

With a new top end you should get a reading around 125. 1982 motors would be lower... somewhere around 95.

skarp · 10-24-2011, 09:17 PM

I have a complete motor with clutch and carb for sale....$650 plus shipping

10-22-2011, 01:15 AM	#1
makobuggie Gone Wild Join Date: Jul 2011 Posts: 389	G1 rebuild I think i need to rebuild my 81, g1,it fires but wont stay running, the fuel is getting to the carb, the choke has tobe on for it to run,i dont have a manual yet, is there pounts on it? And whats the best way to line the timeing marks?thanks
makobuggie Gone Wild Join Date: Jul 2011 Posts: 389

10-22-2011, 04:51 AM	#2
GMB74 Gone Wild Join Date: Jun 2009 Location: Heluvabump,VT Posts: 623	Re: G1 rebuild First step: Do a compression test. What are your readings?

10-22-2011, 07:02 AM	#3
caddylac camper Gone Wild Join Date: Feb 2011 Location: Winnipeg, Manitoba Posts: 177	Re: G1 rebuild There are no points on the G1. You have two possibilities here, either you are very low on compression or the idle/slow speed passageways in the carb are blocked. AS GMB stated do the compression test with throttle wide open. If the compression test is ok then have a look at the carb, first making sure your basic adjustment settings are correct and if there is no improvement you will need to clean the carb with carb cleaner. You will have to remove the carb, totally dismantle and clean/soak everything in carb cleaner. If your compression test indicates low compression then a motor rebuild will be required.

10-22-2011, 07:17 AM	#4
makobuggie Gone Wild Join Date: Jul 2011 Posts: 389	Re: G1 rebuild What should comp read? Thanks
makobuggie Gone Wild Join Date: Jul 2011 Posts: 389

10-24-2011, 09:17 PM	#6
skarp Gone Wild Join Date: Nov 2009 Posts: 250	Re: G1 rebuild I have a complete motor with clutch and carb for sale....$650 plus shipping
skarp Gone Wild Join Date: Nov 2009 Posts: 250

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