New Owner GL1200 SEi - performance problems - Steve Saunders Goldwing Forums

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post #1 of 23 (permalink) Old 06-20-2012, 10:41 PM Thread Starter
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OK, so I just got a 1986 SEi this past weekend for stupid cheap. This is my first ever Goldwing, so I'm learning a lot, and finding the problems.

I'm going to start with the most obvious one. It has no power. I took it for a drive and could hardly get to about 91 MPH (tested with GPS since the speedo doesn't work). I have replaced the fuel filter ($54!). I also opened the fuel filler cap in case it had a venting problem.

When I'm traveling along in OD, if I give it a lot of throttle, it just gets louder, but it doesn't really accelerate much at all. Just gets louder.

So, any geniuses here have any thoughts on this?

Thanks.

On a side note, the air suspension doesn't work at all from what I can tell and when I went for a ride with my wife, we bottomed out the rear repeatedly.

Is there a switch to turn on the driving lights on the bottom front or are both of mine just burnt out?

That should be enough questions for now. I'm sure there will be more.
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post #2 of 23 (permalink) Old 06-20-2012, 10:54 PM
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Welcome to the forum puum

As to your discription of it getting louder not faster, is the clutch slipping? What is in it for oil specically, brand and weight.

Lights and suspension will need a test meter to see where you have power. Do you have the repair manual for it? #1 tool

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post #3 of 23 (permalink) Old 06-20-2012, 11:40 PM
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The driving lights turn on with the appropriate turn signal, so hit the turn signals and see if they kick on, if not, they could just be disconnected... or burned out.

I don't think it's a good idea topull the cap. The fuel system has a return to the tank so it's supposed to be pressurized... theoretically.

The suspension can be pressurized manually assuming it doesn't leak... if it does, just rebuild the shocks/forks and then fill it manually until you can solve whatever issue you have.

Next, there's a small screen in the fuel line before the pump, and a big screen in the tank, check both to make sure they are clean. Check all 4 injectors to make sure they are hooked up, and check the ECU under the trunk to see if there are any lights on indicating a problem. Also, check the air cleaner/filter....

And... if you haven't already, I highly recomend flushing/bleeding all the hydrolics (including the clutch) and clean the little return hole for the clutch (I don't know where it is, but someone else who does should be around soon), and of course basic oil/coolant flushes as well.

Once all that is done, if it still has no nuts, at least you've rulled some stuff out....

1985 LTD.... 121,000 miles and counting

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post #4 of 23 (permalink) Old 06-21-2012, 12:29 AM
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Sounds like a slipping clutch. Once in OD, do the engine rpms go up relative to the speedometer? If so that is a sure sign of a slipping clutch. Unlike a cable clutch, there is no adjustment on the hydraulic clutch, so it has to be the clutch discs or springs themselves. Something else could be wrong if you have no free play at all in the clutch lever.

I would definitely recommend a lot of maintenance on a bike that old, and that complicated.

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post #5 of 23 (permalink) Old 06-21-2012, 10:05 AM
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only 91mph? hardly seems like a problem,especially if mc id fitted with a "tall" windshield

how is acceleration in 3 and 4th,goldwings are not a rocket in OD lol

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post #6 of 23 (permalink) Old 06-21-2012, 12:52 PM
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For a 27 year old motorcycle that, when new, a was maybe good for an actual 110 mph...I think you are OK.

Who knows how many sub standard, non-OEM pieces have been added. Thank your lucky stars the damn thing runs.

As for the acceleration, keep the revs above 3500 and it works better. It is a motorcycle and prefers to be driven like one.

Why ain't we ridin'?
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post #7 of 23 (permalink) Old 06-21-2012, 01:03 PM
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Bike...and Dennis wrote:
Quote:
For a 27 year old motorcycle that, when new, a was maybe good for an actual 110 mph...I think you are OK.
Well, but you gotta remember that the speedos on these bikes are so far off that 91 is really about 80... I know, because mine will do 95 all day long... or so she claims

It would help to have a description of the "gets louder" noise it makes at 91, because minehad a similar reactionwhen one of my injectors was unhooked, the revs didn't climb, the speed didn't change, but it got louder and burbly sounding at full throttle. Of course, mine did it at 70, but ya never know...

1985 LTD.... 121,000 miles and counting

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post #8 of 23 (permalink) Old 06-21-2012, 02:33 PM
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blackknytecnc wrote:
Quote:
Bike...and Dennis wrote:
Quote:
For a 27 year old motorcycle that, when new, a was maybe good for an actual 110 mph...I think you are OK.
Well, but you gotta remember that the speedos on these bikes are so far off that 91 is really about 80... I know, because mine will do 95 all day long... or so she claims

Here's a cut & paste from the first post.

I took it for a drive and could hardly get to about 91 MPH (tested with GPS since the speedo doesn't work).

I have no doubt the bike needs some TLC. Just wanted to insert some reality into the scene, as he seems to think the bike should be able to do more.






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post #9 of 23 (permalink) Old 06-21-2012, 02:53 PM
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Yeah, I forgot about checkin' it with the GPS ... in that case, 91 may not be so bad

1985 LTD.... 121,000 miles and counting

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post #10 of 23 (permalink) Old 06-22-2012, 10:28 AM Thread Starter
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So for starters, sorry about my typo. I have no idea how I got 91 MPH in that first post. That should have said 71 MPH. I had someone else drive it that owns an 81 Goldwing and he said this is way lower on power than his is. So I'm also going on that comparison.



I can't remember what kind of oil is in it, but it's whatever the Honda dealer gave me. I know it's 10-40, I just can't remember the brand. I changed the oil in it last night.



Regarding the possibility of a slipping clutch, it doesn't act like it's that to me. I rode it to work yesterday (65 miles one way). All of my speed tests, etc. are with GPS since the speedo is broken and always reads 0.



Cruising along in OD and it seems to go 65-70 just fine. When you go up a hill, it really wants to slow down bad. Giving it more gas just has a marginal effect.



If I give it lots of gas in OD it feels like it wants to bog out. And if you back off the gas a bit it actually picks up power. Not sure how else to describe it. Air cleaner looks fine. Took it for a quick very short run without the air cleaner, no change.



Not sure if this is normal or would point to anything but on my first fuel fill-up, I got 29.9 MPG.



I think it is better now than when I first posted. I've put Seafoam in both fill-ups at the gas pump so far.



I also need to fix the radiator fan. It doesn't work and the guy that had it before me hard wired a switch to turn the fan on. So if I'm in town, I have to remember to reach up and flip a switch before it overheats.



I'll look for lights under the trunk and see if I can see anything. The lights only work while it's running?



Also, what is the "Fuel System" light for? That was on one time when I took it for a drive. All other times it has not been on.



I did figure out how to turn on the air compressor. How much PSI should the front and rear be? I can't bottom the rear out as easily now, but I still can on a decent-sized bump.



Thanks for all the responses.


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