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1985 GL1200 LTD Idle Problems

8787 Views 11 Replies 6 Participants Last post by  linux2

My 1985 LTD Goldwing has always had this weird idle problem, but I haven't really taken the time to figure out what it is. It runs fine once warmed up for the most part. However, when it's idling or cold it doesn't seem to be consistently firing on all cylinders. Sounds like one of the left-side cylinders is firing late or getting too much fuel (sitting on the bike facing forwards). That doesn't bother me too much, but I have a feeling it's connected to why the bike has trouble idling in the cold.

Anyways, I took a video of this and here is a link to it:

In the video it's at 900rpms cause the engine is still cold, but before I fiddled with the screw I mentioned in the video and the idle screw in the center of the bike it was just stalling out. It comes up to around 1,100 rpms now when warmed up.

Let me know what you think or if you have any ideas. I did change the timing belts when I first bought the bike, but it's been pretty much the same since day one so i don't think the timing is off. When I bought it the idle was actually set a bit high around 1200-1300 rpms so I figure maybe they had done this to prevent it from stalling when cold. There are no error lights coming on on the computer under the trunk. It has 43,xxx original miles.

Any ideas or things to try is greatly appreciated. Also, as a side note, the exhaust smells pretty bad, like it's pure gas. A very rich smell. Almost enough to make your eyes water. Also, when the engine is above 3,000 rpms it seems to vibrate. Pulling the clutch in and letting the RPMs drop down makes the vibration disappear. It's more like a buzzing vibration which might be normal but I've never ridden any other Goldwings. Maybe related? It vibrated the same before and after changing the timing belts as well as changing the u-joint and lubricating the driveline and seems to be completely engine related.

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LTD Idle

first thing i'd want to do is changeout to new plugs and then try to get the throtlle plates synced,because i have a feeling that someone may have tweaked the wrong screw when trying to adjust the idle at one time or another
if you've had this for awhile what kind of miles do you put on this bike and is it just local intown driving or on highway at 3000+rpms etc
but there are lots of things that may be going on here

whoa after listening to the video and you talking about adjusting the idle,i think you have definitely been trying to adjust the idle incorrectly and as such most definitely have the throtlle sync way off
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