75 Goldwing problem


Information and questions on GL1000 Goldwings (1975-1979)
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jeffk
Posts: 17
Joined: Fri Jul 03, 2015 8:27 am
Location: Michigan
Motorcycle: 1975 GL1000KO Goldwing, 1974 CB750K4, 1976 CB750F1 Super Sport, 1983 CB1000C Custom

75 Goldwing problem

Postby jeffk » Sun Jul 05, 2015 8:13 pm



Why would one side of the engine run hotter than the other side. After just 5 minites of idle the right side is much hotter than the left. They both have good spark and compression and are getting gas. Could it be a timing issue. Thanks.



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Ncscooter
Posts: 53
Joined: Wed Jun 17, 2015 11:20 am
Location: North Carolina
Motorcycle: 77 GL1000
76 CB400F

Re: 75 Goldwing problem

Postby Ncscooter » Mon Jul 06, 2015 10:38 pm

Timing would more likely be front vs. back since 1&2 are one coil and 3&4 are the other. How long has this been going on? Carb Synch? Carbs Clean? Compression? Valves adjusted proper?
Keep your expectations tiny and you won't end up so whiny.

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Maz
Posts: 234
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200

Re: 75 Goldwing problem

Postby Maz » Tue Jul 07, 2015 5:40 am

Mixture? A lean condition would cause overheating.

Maz
Nostalgia is not what it used to be!

jeffk
Posts: 17
Joined: Fri Jul 03, 2015 8:27 am
Location: Michigan
Motorcycle: 1975 GL1000KO Goldwing, 1974 CB750K4, 1976 CB750F1 Super Sport, 1983 CB1000C Custom

Re: 75 Goldwing problem

Postby jeffk » Tue Jul 07, 2015 11:25 am

This a new start up after a rebuild. I rebuilt the carbs with new kits and found the carb air jets at 1 to 1.5 turns out so thats where I reset them when I reinstalled the carbs. Does this sound OK. I also hear some loud knocking coming from the engine, cannot pin-point it though.

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Maz
Posts: 234
Joined: Tue May 19, 2015 4:43 am
Location: Kent, UK
Motorcycle: 1975 GL1000K1
1976 CB500T
1979 CB750L
1990 Yamaha FJ1200

Re: 75 Goldwing problem

Postby Maz » Tue Jul 07, 2015 12:16 pm

It sounds like the bike is only firing on a couple of cylinders. That would explain one side being hotter (obviously the non-firing side will be cool) and, when these engines aren't firing on all 4, they sound like they're about to self destruct.
Check again to make sure you have fuel and spark on all 4 and check the temperature of the exhaust headers on the cold side as the engine warms up. If you test with a quick tap with fingers you'll soon find if they're warming up or not. Obviously take great care!!

Maz
Nostalgia is not what it used to be!

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Ncscooter
Posts: 53
Joined: Wed Jun 17, 2015 11:20 am
Location: North Carolina
Motorcycle: 77 GL1000
76 CB400F

Re: 75 Goldwing problem

Postby Ncscooter » Tue Jul 07, 2015 2:56 pm

What he said. Assuming you have 755A carbs, 1 3/8 turns out is what Mother Honda recommends as a starting point. And synch. Is your tank and filter clean?


Keep your expectations tiny and you won't end up so whiny.


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