missing under acceleration


Information and questions on GL1200 Goldwings (1984-1987)
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loopy
Posts: 64
Joined: Mon Nov 22, 2010 5:32 am
Location: Australia
Motorcycle: 1985 1200 interstate

missing under acceleration

Postby loopy » Wed Nov 25, 2015 1:33 am



Hello All,
I have been trying to fix a problem for 2 years in my 84 1200 Goldwing.

Under acceleration beyond 2000 rpm the bike misfires.

Once cruising it is beautiful.
Can also backfire a little on deceleration.

I have had new carby kit put thru all carbies and had the vacuume set properly BUT does not make any difference.

The only thing that remains are spark plug leads or coil pack.

Where can I get new lead boots/caps and what type or part No, and also what type of plug leads should I purchase.



User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: missing under acceleration

Postby WingAdmin » Wed Nov 25, 2015 10:13 am

Have you replaced any plugs/coils/wires at all? Missing under load like you describe is commonly going to be caused by a weak spark issue.

loopy
Posts: 64
Joined: Mon Nov 22, 2010 5:32 am
Location: Australia
Motorcycle: 1985 1200 interstate

Re: missing under acceleration

Postby loopy » Wed Nov 25, 2015 2:49 pm

Plugs have been replaced but made no difference.
Leads and coil have not been replaced and are probably original.

User avatar
virgilmobile
Posts: 7647
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: missing under acceleration

Postby virgilmobile » Wed Nov 25, 2015 5:08 pm

One more question from the peanut gallery.
When it starts to miss, have you added a bit of "choke" to see if it helps?
Also,what's the battery voltage when its acting up.Above 13 volts is normal




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