1989 gl1500 won`t start - Steve Saunders Goldwing Forums

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post #1 of 17 (permalink) Old 04-07-2019, 04:09 PM Thread Starter
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I know this has been covered, in great detail, which i have followed instructions from many articles
i have a 89 GL 1500 that started and ran 2 weeks ago , i went to start it last weekend but it just keeps turning over ,
I`ve done the following checked resistance on primary and secondary side of coils , i have good spark on all plugs I`ve checked that fuel pump is priming every time I turn key on/off ,as well as the kill switch I`ve checkd all relays,I`ve added a relay to ignition coils +12v side changed the battery,so basically I have fuel /spark and compression? what am I missing I`ve checked the timing belts timing because every once and awhile I get a back fire, now on the advice of a Honda mechanic I`ve change the gas to a fresh tank of 94 octane any help would be great

Last edited by Bill Reed; 04-07-2019 at 06:34 PM.
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post #2 of 17 (permalink) Old 04-07-2019, 04:26 PM
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Hello and welcome to the forum, glad to have U with us.
May I ask how old is the battery?


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post #3 of 17 (permalink) Old 04-07-2019, 05:46 PM
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You know the fuel pump is working, but is the motor getting fuel?

And please update your profile to include your city, state and bike information.

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post #4 of 17 (permalink) Old 04-07-2019, 06:49 PM
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Hello and Welcome .
It could be the fuel pump is pumping but the vacuum fuel cutoff valve ( next to the gas cap) is not opening and allowing fuel to the carburetors . This could be caused by a failed vacuum line to the valve, or the diaphragm in the valve is failed. for testing , just bypass the valve by connection the supply line (inlet) to the carb line(outlet) and see if it runs.
The backfire or pop could be caused by the leaking vacuum.

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post #5 of 17 (permalink) Old 04-07-2019, 09:47 PM
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I moved this thread to the 'Technical Section' where it will get more attention and you'll have answers.


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post #6 of 17 (permalink) Old 04-07-2019, 10:15 PM
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You might have missed the following....!!!!!!

I didn't read that you checked the "pulse generators".....!!
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post #7 of 17 (permalink) Old 04-08-2019, 07:14 AM
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Quote:
Originally Posted by Bill Reed View Post
now on the advice of a Honda mechanic I`ve change the gas to a fresh tank of 94 octane any help would be great
A Honda mechanic told you to put 94 octane in it, fire him. Have you checked that the gas is getting to the carbs? The fuel pump running doesn't help if it isn't getting past the filter & auto-shut off.
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post #8 of 17 (permalink) Old 04-08-2019, 08:23 AM
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Quote:
Originally Posted by DBohrer View Post
You might have missed the following....!!!!!!

I didn't read that you checked the "pulse generators".....!!
Dave, he said in his first post he was getting good spark on all plugs so that should eliminate the pulse generators as the problem.

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post #9 of 17 (permalink) Old 04-08-2019, 08:48 AM
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If you want to see if you are barking up the right tree take the cover off the air cleaner box and spray a little gas in the carbs to see if it runs or tries to run. Then you will at least know you need fuel. Do you smell fuel when you try to start it?

Mike

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post #10 of 17 (permalink) Old 04-08-2019, 10:04 AM
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Quote:
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Dave, he said in his first post he was getting good spark on all plugs so that should eliminate the pulse generators as the problem.
We have had a couple issues with "pulse generators" being dirty and or bad when folks thought they had "good spark".

Might come down to the definition of "good spark"......just saying....!

Not saying that's his problem but something I would check (among other things).
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