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1981 yamaha maxim 650
Posted: Sat Jul 16, 2011 7:01 pm
by millermike
Im having problems with my 1981 yamaha maxim 650. when i start the bike it runs great and as it warms up it start idling higher and higher. Ive tried letting it warm and spraying wd-40 around intakes and elswhere but seems to be no air leak. plugs are burning white any ideals?
Re: 1981 yamaha maxim 650
Posted: Sun Jul 17, 2011 1:32 am
by Johnj
If your plugs are white that means your running lean.
Plug chart
Re: 1981 yamaha maxim 650
Posted: Sun Jul 17, 2011 1:35 am
by millermike
thats what i figured just confused why she runs great when cold and bad when warmed up
Re: 1981 yamaha maxim 650
Posted: Sun Jul 17, 2011 3:58 am
by HYPERR
millermike wrote:thats what i figured just confused why she runs great when cold and bad when warmed up
When do you turn off the choke?
Re: 1981 yamaha maxim 650
Posted: Sun Jul 17, 2011 4:33 am
by millermike
never even turn choke on
Re: 1981 yamaha maxim 650
Posted: Sun Jul 17, 2011 4:57 am
by HYPERR
millermike wrote:never even turn choke on
This bike starts up and idles perfectly when it is cold without the choke despite your assertion that the bike is running lean?
Re: 1981 yamaha maxim 650
Posted: Sun Jul 17, 2011 5:14 am
by millermike
im not a mechanic i just know that when it warms up it wont idle back down and my plugs are white
Re: 1981 yamaha maxim 650
Posted: Sun Jul 17, 2011 7:19 am
by Johnj
It won't idle back down...intake leak.
Re: 1981 yamaha maxim 650
Posted: Sun Jul 17, 2011 7:48 am
by millermike
sprayed around intakes with starting fluid when it warmed up and it didnt idle down or higher