1997 Goldwing GL1500 Jerks under 2,000 RPM - Page 9 - Steve Saunders Goldwing Forums

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post #81 of 150 (permalink) Old 06-14-2018, 03:03 PM Thread Starter
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Originally Posted by Rickf1985 View Post
Sounds like you are talking about a compression test. Leakdown tests are only done dry and involve a leakdown tester. if excessive then you listen at the oil fill, exhaust or intake for air escaping and that tells you where your problem lies. As far as I am concerned a leakdown test is much more accurate and telling than a compression test.
Oh yes, forgot about that test, but unfortunately I do not have the leak-down test tool. I had one but my son likes to go shopping for tools in my garage. He sees what he likes and all of a sudden the tool grows a pair of legs and moves out...into his garage or tool box. I'll have to pick up another test gauge.
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post #82 of 150 (permalink) Old 06-14-2018, 03:09 PM Thread Starter
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Bike is all back together and wiped down. This is day one after yesterday's soaking with B12 Chemtool fuel treatment. I put about 1/3 can directly into the carbs and ran the engine until it started smoking really bad. Huh? Word of advice...where a mask if you have one. The fumes from B12 are very toxic and can indeed cause you to pass out. I got light headed. My stupid fault as I forgot B12 uses Toluene as one of its cleaning agents, and it is toxic.

Ran the bike for about 40 miles and it got better over time. While the jerking did not totally vanish, it happens much lesser, and my acceleration is a lot stronger now. The bike will actually spin the rear tires on hard takeoff if you're not careful. No, she's not a race bike, but I'm not used to having that kind of low-end torque on a GL1500; at least not from mine. I also noticed my fuel mileage getting better. On average, she only got about 28mpg to 32mpg, which kind of sucked if you ask me. I haven't filled the tank again as I'm down to a half-tank of fuel. So I will let you know if she improves more. I will continue using B12 Chemtool.

Lastly, the jerking has reduced to a flutter. So instead of the bike jerking really bad, it flutters and makes a brrrr sound when you accelerate hard and low RPM. Some of this I presume is the difficulty in burning the fuel additive as it tends to want to stall the bike. I still have more than a half-can left so I will continue using the treatment until the entire can is gone. If this doesn't work, and a bleed down test fails, then I guess I will be yanking those beautiful heads.

Joe
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post #83 of 150 (permalink) Old 06-14-2018, 09:13 PM
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You just need to ride that bad boy,my 1500 has gobs of torque at low rpm,25 mph in 5 and it pulls right out and goes,.I use RXP from Autozone every now and then but mine runs great at 96,000

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post #84 of 150 (permalink) Old 06-14-2018, 11:17 PM
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I would try new spark plugs even if the current ones look good. Had the exact same symptoms with my work truck. Spark was breaking down under higher compression when slightly lugging the engine like when going up hills. Good luck!
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post #85 of 150 (permalink) Old 06-14-2018, 11:47 PM
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Ngk dpr7ea9
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post #86 of 150 (permalink) Old 06-15-2018, 07:16 AM Thread Starter
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You just need to ride that bad boy,my 1500 has gobs of torque at low rpm,25 mph in 5 and it pulls right out and goes,.I use RXP from Autozone every now and then but mine runs great at 96,000
Going to do that today. Plan on riding about 100 miles give or take. See if i can't blow any combustion garbage out of the system. A bit warm today, but at least the sun is out, so time to catch the wind on my knees. I'll try capturing a few video clips.
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post #87 of 150 (permalink) Old 06-15-2018, 07:18 AM Thread Starter
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I would try new spark plugs even if the current ones look good. Had the exact same symptoms with my work truck. Spark was breaking down under higher compression when slightly lugging the engine like when going up hills. Good luck!
Hmmmmm? You might be right. The plugs on mine look almost new. But now that I think about it, it is acting like a weak spark and might explain why a lot of the jerking subsides if the bike has been on the road for a while.
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post #88 of 150 (permalink) Old 06-15-2018, 07:20 AM Thread Starter
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Ngk dpr7ea9
Those be quite expensive....
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post #89 of 150 (permalink) Old 06-15-2018, 09:07 AM
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Those plugs are what the Honda uses in that bike.
They don't seem expensive to me, and they are the correct heat range etc for that bike.
What are using now?

Remember, you get what you pay for, or as my late mother in-law used to say, "he who goes cheap pays twice".

https://cyclemax.com/inc/sdetail/gl1...gs/158744/4111
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post #90 of 150 (permalink) Old 06-15-2018, 11:08 AM
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Western asks $1.92 each for plugs.
You may be able to get them at your local dealer for 15 bucks a set.

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