75 Goldwing problem

[jeffk]

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.

[Ncscooter]

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?

[Maz]

Mixture? A lean condition would cause overheating.

Maz

[jeffk]

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.

[Maz]

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

[Ncscooter]

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?