ENGINE KNOCK


Information and questions on GL1100 Goldwings (1980-1983)
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hockeystuff54
Posts: 94
Joined: Wed Jul 04, 2012 2:37 pm
Location: keewatin ontario
Motorcycle: 1980 honda goldwing gl 1100

ENGINE KNOCK

Postby hockeystuff54 » Wed Aug 08, 2012 9:25 am



when i start the bike it has a solid knocking sound,seems to have started all of sudden,could it need the carbs synced,it sound like a solid knocking and does it when you first start it ,oil is good ,any ideas



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virgilmobile
Posts: 7644
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: ENGINE KNOCK

Postby virgilmobile » Wed Aug 08, 2012 10:52 am

Start the bike from cold and let it idle below 1000 rpm for 5-10 seconds.Lightly tap each header.All should be the same warm.A cold pipe is a non firing cylinder.Carbs,spark,plugs,compression,etc.

Setting still,raise the rpm to 2000.No load.
Is the knock still there? If yes,shut it down and get a sthescope to locate the area.

If it quiets down,check the compression.Expect to see from 100 to 150 psi with no more than 5 psi difference between any cylinders.You will never get the Knock out if there is a wide range of compression.A sync will not help if the cylinders are uneven to start with.
If the compression is even,service and sync the carbs.
Bad carbs or sync will rattle the hyvo(primary)chain and make the engine "knock"

User avatar
hockeystuff54
Posts: 94
Joined: Wed Jul 04, 2012 2:37 pm
Location: keewatin ontario
Motorcycle: 1980 honda goldwing gl 1100

Re: ENGINE KNOCK

Postby hockeystuff54 » Wed Aug 08, 2012 1:52 pm

thanks for the quick reply ill try that ,im getting huge amouts of smoke when i rev it up now so ill have to check oil again and im beginning to believe the carbs are outta syc

User avatar
virgilmobile
Posts: 7644
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: ENGINE KNOCK

Postby virgilmobile » Wed Aug 08, 2012 1:58 pm

Any goldwing,when left on the sidestand for a long time can accumulate oil where it shouldn't be.It will drive out the mosquitos for a good hour before burning it off.Been there.Keep it on the centerstand.




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