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1988 Goldwing 1500. Replaced most every vacuum hose. Put it back together and it would not start. Took air filter off. Looked down throats of carbs. The carb on right is fine but carb on left is flooding cylinder with lots of gas.
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First be sure the engine is not hydrolocked. Disconnect the fuel pump. Hold the throttle wide open until the engine starts and runs. Then run the carbs out of gas so the needle and seat will be wide open. Reconnect the fuel pump and hopefully the fuel rushing through the wide open needle and seat will carry away any debris that was stuck in there. Make sure the oil is not diluted with gas when all is well.:)
 

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Hot-wire the fuel pump with engine off while pulling a vacuum on petcock and see if that carb still floods. If no flooding then the vacuum lines are prolly misrouted and your pulling a vacuum where none should be.
 

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1988 Goldwing 1500. Replaced most every vacuum hose. Put it back together and it would not start. Took air filter off. Looked down throats of carbs. The carb on right is fine but carb on left is flooding cylinder with lots of gas.
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1988 Goldwing 1500. Replaced most every vacuum hose. Put it back together and it would not start. Took air filter off. Looked down throats of carbs. The carb on right is fine but carb on left is flooding cylinder with lots of gas.
View attachment 322327
I think you have a stuck float or bad float valve.
 

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It aint rocket science
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1988 Goldwing 1500. Replaced most every vacuum hose. Put it back together and it would not start. Took air filter off. Looked down throats of carbs. The carb on right is fine but carb on left is flooding cylinder with lots of gas.
It can only be one of two things, the obvious that Mike and Dave replied to or the not so obvious I wrote. Did you try anything suggested?:) A stuck float on an '88 will sometimes dump fuel overboard on that carb from the thicker hose on the left rear corner that goes to the metal pipe which sits behind air box. Disconnect that hose from carb and see if gas pours from there too.
 
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