1997 Goldwing GL1500 Jerks under 2,000 RPM - Page 2 - Steve Saunders Goldwing Forums

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post #11 of 150 (permalink) Old 06-09-2018, 12:41 PM
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Have you sprayed water on the plug wires?

That will show leaking spark problems fast.

Use a small mister spray bottle.

~ John


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post #12 of 150 (permalink) Old 06-09-2018, 12:51 PM
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A Goldwing is not a CRUISER, it is a touring bike.
SMACK!

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post #13 of 150 (permalink) Old 06-09-2018, 06:10 PM Thread Starter
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Originally Posted by Rickf1985 View Post
Accelerator pump on left carb probably not working correctly. That would give a lean snap accell. And a backfire.
That was my original thought as well when I first troubleshot the problem. Both the left and right accelerator pumps are working as far as I could tell. Both nozzles squirt quite heavily, but the slower you rotate the throttle, the less fuel is sprayed; a sudden twist of the throttle and fuel squirts out.

Joe
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post #14 of 150 (permalink) Old 06-09-2018, 06:13 PM Thread Starter
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Originally Posted by busdriver View Post
You can run the engine with the air filter out and visually check the slide travel while snapping the throttle. If you have a sticky slide hit it with a few shots of silicone spray and work it back and forth with a finger.

When I first bought my 1500 years ago it had a terrible backfire and stumble. Took it to a Honda dealer who charged me $137 for supposedly lubing the enrichment valves (yeah sure) and of course no change. They then said the next step was a carb out service at around $1000. I went home and learned my way around the bike and first thing i found was a broken spark plug insulator. Not noticeable till you rotated it in your hand and watched as it moved. Cracked at it's base it would slide up the electrode and snuff out the spark, cylinder filled with unburned fuel/air then next cycle pop bang. New set of plugs and problem solved. I learned to start simple and pay attention to small details.
I removed all of the plugs and they looked brand new....and expensive. LOL All appeared to be brass or gold colored. I checked visible areas of the plug wires which all looked good, but was unable to view the wires deep in the engine bay. I suppose I should check that too. But all plugs were torqued properly after reinstalling them, so no leaks. Something is telling me that I still have a vacuum leak that I must have missed. I sometimes wonder if the PAIR Valve (hate the damn thing to be honest) might be either leaking or not functioning correctly. Perhaps I should do another PAIR Valve test.

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post #15 of 150 (permalink) Old 06-09-2018, 06:15 PM Thread Starter
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SMACK!


Yavo! Thanks for the correction. How dare I insult such a fantastic bike by calling it a cruiser. I stand corrected....it's a TOURING bike.

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post #16 of 150 (permalink) Old 06-09-2018, 06:16 PM Thread Starter
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Originally Posted by AZgl1800 View Post
Have you sprayed water on the plug wires?

That will show leaking spark problems fast.

Use a small mister spray bottle.
Gonna try that tonight. I'm also going to make a video and post it on YouTube so everyone can see what it's doing.

Be back soon!

Joe
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post #17 of 150 (permalink) Old 06-09-2018, 08:21 PM Thread Starter
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Okay folks! Here is a short video of the problem I'm having. I hope you are able to hear what the bike does below 2,000 RPM. I know it sounds like I'm lugging the bike, but keep in mind that it's only 1/2 throttle. And with the cheap fuel that's in it, I noticed the full power doesn't kick in to close to 3,000 RPM on a 90 degree day. Had I filled it up with 93 Octane, it would not have jerked or stumbled as much. This is why I continue to believe this to be a lean condition at or below 2,000 RPM, give or take.

https://www.youtube.com/channel/UCpS...XwrhPHLkQbdVww

Let me know what you think guys....

Joe
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post #18 of 150 (permalink) Old 06-09-2018, 08:27 PM
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Sounded like water in the carbs to me.

Why ain't we ridin'?
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post #19 of 150 (permalink) Old 06-09-2018, 08:47 PM
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Good video, beautiful and super clean bike.

When you check the vacuum hoses make sure to squeeze, bend and manipulate them as some splits and cracks may not be visible otherwise.
Also pay attention to hoses that have a preformed bend as they can collapse along the inside radius of the bend.
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post #20 of 150 (permalink) Old 06-09-2018, 11:54 PM Thread Starter
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Sounded like water in the carbs to me.
Certainly the way it's acting, you would think so. But Carbs are great and clean fuel, non-ethanol. I'm still thinking it's a vacuum leak in the left intake, but I can't seem to find it. Might also be a bad PAIR Valve, so I'm actually thinking of deleting the thing since it's only purpose is to help burn off residual fuel in the exhaust system.
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