carbs. ajustments


Information and questions on GL1100 Goldwings (1980-1983)
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fr3captain
Posts: 4
Joined: Fri Nov 26, 2010 10:28 pm
Location: dawson,georgia
Motorcycle: 1981 honda goldwing interstate

carbs. ajustments

Postby fr3captain » Sat Nov 27, 2010 8:07 am



im a proud owner of a 1981 goldwing 1100 interstate..bike runs good but back fires sometime after shifting....change spark plugs..and put sea foam.and have run many tanks threw it..can some help me solve my problem..thank you.



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virgilmobile
Posts: 7659
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
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83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: carbs. ajustments

Postby virgilmobile » Sat Nov 27, 2010 1:17 pm

Generally speaking;when backfiring occurs in the exhaust after shifting it means the exhaust is accumulating unburnt gas then igniting when the air fuel mixture is right.Accelerating with a poorly firing cylinder will pass unburnt gas then decelerating will add the oxygen needed to ignite then POP.I'd start with the basic tune up,Adjust the valves(by the book)Check compression(You're looking for balance over amount)eg:135,130,135,132 psi. 8psi difference is OK. My problem engine I had was;95,135,100,125 psi.The good cylinders would pull and drag the poor ones along filling them with more gas mixture than they could burn(some tan plugs,some sooty plugs).Notice I didn't mention the carbs?Consider them 2nd on the list.Be sure the engine will fire the gas before you start adjusting the carbs.If the compression is poo-poo then all the cleaning and tweaking won't help.Oh,and yes...A sticky slide will overload a cylinder too.Sea Foam will not magically restore the carbs to new condition.It takes hands on.

fr3captain
Posts: 4
Joined: Fri Nov 26, 2010 10:28 pm
Location: dawson,georgia
Motorcycle: 1981 honda goldwing interstate

Re: carbs. ajustments

Postby fr3captain » Sat Nov 27, 2010 9:33 pm

thank you ....i will run a compr...check first....


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