GL1200 Fuel Enrichment Plungers


Information and questions on GL1200 Goldwings (1984-1987)
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a10driver
Posts: 3
Joined: Sun Feb 01, 2015 12:59 pm
Location: Laquey, MO
Motorcycle: 1986 GL1200 Interstate

GL1200 Fuel Enrichment Plungers

Postby a10driver » Mon Feb 02, 2015 12:40 pm



Hello everyone, new poster on forum but I have quietly stalked the valuable information here for quite some time. I was hoping someone has had a similar problem and can give me a possible solution. I am working on my brothers 84 aspencade for him, carbs, timing belts, head gaskets, etc. Bike is all put back together and running good. My issue is the choke (fuel enrichment) plungers will not go all the way back in their hole unless I push lightly with my finger or a screwdriver. They hang up about 1/8" out, not much but enough to cause problems. Not a problem until bike warms up and doesn't need choke anymore, then it runs very rich. I noticed when I pushed all the chokes in fully by hand the bike cleared up and ran beautiful. This is the second rack of carbs I have rebuilt for 1200's so I am fairly confident in my abilities. I did ensure passages were clear in the choke circuit. Is there anyway to clean the hole that the plunger rides in? Carbs are on bike now unfortunately. They were clean, however I'm wondering if running something in them to ever so slightly give more clearance for the plungers? Cable is fine, the issue is the plungers. I'm wondering if they are bent, but all 4 doesn't make sense.

Tips or insight is more than welcome! Thank you!!



a10driver
Posts: 3
Joined: Sun Feb 01, 2015 12:59 pm
Location: Laquey, MO
Motorcycle: 1986 GL1200 Interstate

Re: GL1200 Fuel Enrichment Plungers

Postby a10driver » Mon Feb 02, 2015 10:59 pm

Anyone had this issue before? I think I can remove the plungers on the front left carb, and right rear fairly easily with it still in bike. The other two may be a bit touchy. I'm going to look at them in the morning and see. I'm not sure what to use to clean the hole out that the plunger moves up and down in. I know it's clean, but the walls must be holding some corrosion or something. Just not sure how to brush it out.

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virgilmobile
Posts: 7646
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: GL1200 Fuel Enrichment Plungers

Postby virgilmobile » Tue Feb 03, 2015 3:12 pm

Operate the choke on then off.Look very close at the fork that operates the enriching valve.Ill bet 4 cents that they are holding the valves open.The pivot pin gets sticky and each one is spring loaded.I had to remove all 4 of mine and clean them.

a10driver
Posts: 3
Joined: Sun Feb 01, 2015 12:59 pm
Location: Laquey, MO
Motorcycle: 1986 GL1200 Interstate

Re: GL1200 Fuel Enrichment Plungers

Postby a10driver » Tue Feb 03, 2015 9:59 pm

Thank you for the advice; I will take a look at the pins and forks. Maybe a drop of oil between the pin and the black plastic sleeve. Now to try and get them cleaned without pulling the carbs!




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