Bike hesitation after half throttle


Information and questions on GL1500 Goldwings (1988-2000)
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djwintz
Posts: 2
Joined: Sat Jul 04, 2020 1:07 pm
Location: Port Alberni/ BC/ Canada
Motorcycle: 1992 GL1500 Aspencade

Bike hesitation after half throttle

Post by djwintz »



I have a 92 Goldwing 1500 Aspencade. Bike is/was running great. Runs great up to half throttle. Soon as I go over half throttle there is lack of power and hesitation. I back off to half and everything is fine. Any help would be appreciated.



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ct1500
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Location: Glastonbury,CT
Motorcycle: 1988 GL1500
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Re: Bike hesitation after half throttle

Post by ct1500 »

Sounds like a classic case of auto petcock failure. In front of the gas cap is the petcock with a vacuum line to it. With engine running and hose removed hose should be pulling a vacuum. Attach a vacuum pump to petcock and pull a slight vacuum which should hold steady.
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djwintz
Posts: 2
Joined: Sat Jul 04, 2020 1:07 pm
Location: Port Alberni/ BC/ Canada
Motorcycle: 1992 GL1500 Aspencade

Re: Bike hesitation after half throttle

Post by djwintz »

Thanks for the reply. I got it fixed. Bought a can of Seafoam and poured it in the tank. Within 5 klms it was fixed. Bad gas, last tank I'm thinking.

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ct1500
Posts: 1392
Joined: Wed Nov 10, 2010 8:09 pm
Location: Glastonbury,CT
Motorcycle: 1988 GL1500
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Re: Bike hesitation after half throttle

Post by ct1500 »

Good old mechanic in a can. :D
Local and need repair help with your 1500, Valkyrie or ST please click contact
Nothing leaves my shop till its' perfect
This is what I do

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WingAdmin
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Re: Bike hesitation after half throttle

Post by WingAdmin »

For those checking this topic in the future, another common cause of this problem is a clogged fuel filter. It will pass enough fuel to run at lower loads, but at higher speeds, you end up literally "running out of gas" because the filter can't keep up with the required fuel flow.



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