Clutch engagement issue? New to me '94


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Joined: Sun May 30, 2021 11:50 pm
Location: Summerville SC
Motorcycle: 1994 1500 GL

Clutch engagement issue? New to me '94

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OK yall, I'm trying to sort out all the little niggles on my new to me bike! First wing, so this is new to me (I've been riding bikes for almost 20 years as my primary vehicle and picked this gal up after a 2 year health break)

So the bike drives fine as far as I can tell (I believe I've got some fork issues but thats another day/time) but I'm having issues getting the bike rolling from a stop

I'll try to describe this as best I can:

When I clutch and give it throttle, the bike will start to roll at idle no issue. When I let out the clutch more and apply more throttle to actually GO, it feels like the clutch gets pulled in and I have no power, plus the bike begins to stutter like itll stall out. I have to rev the motor pretty high (1200rpm ish) to actually get it to grab and continue forward, at which point theres no issue shifting or riding. This only happens at a standstill or near stop.

I've also noticed that when I blip the throttle, the bike wants to stumble. Im wondering if my idle is too low (I think its 800 or around there, Ill try to take a look next ride).


can yall help me with this weird one?

thanks yall!


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Rambozo
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Re: Clutch engagement issue? New to me '94

Post by Rambozo »

First thing I would do is flush and bleed the clutch. Also change the oil and make sure it is one that is ok for wet clutches. (no friction modifiers)
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MikeB
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Re: Clutch engagement issue? New to me '94

Post by MikeB »

When was the oil changed last and what oil did you use? Do you know what kind of oil the previous owner use?
Hopefully it was not energy conserving oil. I'm not an oil aficionado so I can not advise what oil is proper or improper. But Energy Conserving oils need to be avoided. Change the oil and see if it improves the clutch engagement. Try some Honda GN4 and see if that helps.

As to the stumble on start, you may need to add some additive to the fuel like Seafoam or Techron. There may be some gum in the carb jets that is hampering off idle performance.
MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 1968 - 1986 / Flight Engineer C-130E - C-141B - 1986 - 1992. Retired
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Retired in Tacoma, WA
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Joined: Sun May 30, 2021 11:50 pm
Location: Summerville SC
Motorcycle: 1994 1500 GL

Re: Clutch engagement issue? New to me '94

Post by Default »

MikeB wrote: Mon May 31, 2021 1:05 am When was the oil changed last and what oil did you use? Do you know what kind of oil the previous owner use?
Hopefully it was not energy conserving oil. I'm not an oil aficionado so I can not advise what oil is proper or improper. But Energy Conserving oils need to be avoided. Change the oil and see if it improves the clutch engagement. Try some Honda GN4 and see if that helps.

As to the stumble on start, you may need to add some additive to the fuel like Seafoam or Techron. There may be some gum in the carb jets that is hampering off idle performance.
I plan on picking up some seafoam anyway (I tend to do that to all my "new" rides, just in case) so Ill add some to the oil and gas to try to blast the crap out.

Never changed the oil on it myself (only had it since the 5th and it took all my fun money to get it) but thats next on the list. Hoping to get a filter locally tomorrow.
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Re: Clutch engagement issue? New to me '94

Post by Default »

Ok yall, I changed the oil today (and glad I did), I added seafoam to the tank and to the old oil and rode it around.


After the oil change I rode it and for the first little bit, it was AWESOME. By the time I got home the shifts were clunkier than before and the bike was starting the hesitating again. I checked the level and it seemed low but not deathly so, so I added more. Ill go for another ride later and see how it does.
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Re: Clutch engagement issue? New to me '94

Post by Earl43P »

I suggest running a full can of Berryman B12 in the fuel.
And yes - I also think you'll like your idle better if set to 1000.


Problem ~1200 rpm and it failing to pull smoothly up in speed would indicate carburetor problem to me, so cleaning with Berryman B12 should help that.
Try a heavy dose, like a full can in less than 1/2 tank of gas and use the problematic rpm range as much as possible.
It can also be helpful to use excessive engine braking to decelerate.
It may take several tanks of treated fuel to clear it up. If it never helps, well....carbs may need mechanically cleaned or you could have a vacuum leak in any of the many hoses "under there".

I miss my 93 but I sure don't miss its rear tire changes!
When all else fails, RTFM!

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Re: Clutch engagement issue? New to me '94

Post by Default »

OK yall, update time

Ive run a can of seafoam and berrymans (per suggestion) thru the bike, changed the oil and even swapped (some) of the clutch fluid (its topped off too, and aside from air in the system I cant see any issues)

Nothing has changed.

Heres what I can tell you: with the bike in 1st, I can let the clutch out slowly and the bike will creep like a car/normal bike, with 0 throttle input, until the stall point where it needs throttle input. My RPMs are sub 1k at this point. I add throttle till roughly 1500 and release the clutch like normal, and for some reason about half way thru release it acts like I dumped the clutch (1500rpm suddenly drops to 1k or below, stalling noises etc). If i add throttle to compensate, it takes a second for the engine to recover then it suddenly will jump up to 2k or better, THEN take off (usually too quick but this aint my first rodeo, drift it like a super moto!).

After take off, I can not notice any issues with 1500rpm range, even tho Im rarely ever there.

thoughts on all that anyone?
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Rambozo
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Re: Clutch engagement issue? New to me '94

Post by Rambozo »

What happens if you take off in second gear?
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Re: Clutch engagement issue? New to me '94

Post by Default »

Dunno, Ill try that next! It honestly FEELS like its in second at times, with the rpm drop


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