Cranks but no spark no start


Information and questions on GL1500 Goldwings (1988-2000)
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Theros88
Posts: 4
Joined: Tue Aug 29, 2023 2:34 pm
Location: Riverside, CA
Motorcycle: 1996 GL1500 Aspencade

Cranks but no spark no start

Post by Theros88 »



1996 Gl1500 Aspencade

I bought the bike a few months ago. There was a hole on the clutch line. It was towed to the mechanic. They are experienced motorcycle mechanics but not specialized on Honda Goldwings.

The bike started fine before putting on the lift.
Disassembled and replaced the clutch line.
While they were at it they replaced the thermostat for the fan as well.

Now the bike is back together, the engine turns when the ignition is pressed but no spark. Funny thing is that the engine turns at all three starting positions.
Battery is new.
They checked continuity to the spark plugs.
Plugs are good.
Fuses are good. Light panel turns on when key is on and switch is on.
Roll sensor is checked.
Center stand is on.
Side stand is off.
Neutral light is on.

The bike has been there for a couple months. They have not thrown the towel yet. But they have gone through the service manual checklist and are running out of ideas. The next thing they are checking tomorrow is the switches. The last thing is the ECU.

Do you have any new ideas?

Thank you


Theros88
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Location: Riverside, CA
Motorcycle: 1996 GL1500 Aspencade

Re: Cranks but no spark no start

Post by Theros88 »

I wonder if it is related to this post about no spark after changing the thermostat. However, the issue was not resolved in this post.
viewtopic.php?t=13701
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Charlie1Horse
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Re: Cranks but no spark no start

Post by Charlie1Horse »

Check the wire connections under the kill switch. Vibrations will cause the screws to loosen and then there is no connection. Check the connector on the ECM that controls the engine electronics. Check the connector that leads to the three ignition coils for connectivity and ignition positive and ground. If that checks out, check the ignition switch connector.
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Re: Cranks but no spark no start

Post by landisr »

Have them Load Test the battery. If it sat for two months it could need charging. Also, if the ECU doesn't get at least 10.2 (?) volts it won't send power to the fuel pump.

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Theros88
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Joined: Tue Aug 29, 2023 2:34 pm
Location: Riverside, CA
Motorcycle: 1996 GL1500 Aspencade

Re: Cranks but no spark no start

Post by Theros88 »

It’s a new battery. But I will ask him to check regardless.
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Rambozo
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Re: Cranks but no spark no start

Post by Rambozo »

Measure the voltage at the coils, with the key on, and while cranking.
Dalibor
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Motorcycle: 1996 1500 se

Re: Cranks but no spark no start

Post by Dalibor »

I did 12.20 an coils und 10.10 when cranking
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Re: Cranks but no spark no start

Post by WingAdmin »

Dalibor wrote: Thu Aug 31, 2023 3:42 am I did 12.20 an coils und 10.10 when cranking
That's your problem. The GL1500 needs a lot of power to generate spark. If your voltage is dropping to 10 volts while cranking, it doesn't have enough voltage to generate spark. Your battery is likely the problem.

Have a look at this video, starting at the 3:33 mark:



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vdelephimne
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1988 Gl1500

Re: Cranks but no spark no start

Post by vdelephimne »

I have the same issue with a bike I just picked up. I think I found the issue, will know in a few days. My ECU was full of fire ants. It was strange I had it running when I got it home then lost spark. I ordered an ECU today, I hope it works.
Theros88
Posts: 4
Joined: Tue Aug 29, 2023 2:34 pm
Location: Riverside, CA
Motorcycle: 1996 GL1500 Aspencade

Re: Cranks but no spark no start

Post by Theros88 »

Here is an update:

First, I have no idea who Dalibor is. I thought he was the mechanic working on my bike. He is not. So his information has nothing to do with my bike.

Second, my mechanic put in a new battery. They said they load-tested it. The sitting voltage is 12.48v. With key on is 11.86v. Cranking is 11.50. This is well above 10v. So there should be spark. The bike is back at my house. The mechanic said if I can get the spark back, they will finish it. But they have ran out of idea.

Third, I tried to swap the ECU/ECM from ebay. Still no spark.

Fourth, they now think it is the wiring. Just a recap, the bike ran then the clutch hose broke. Before the mechanic disassembled the bike to change the hose, it still ran. Now the clutch hose is replaced, the bike cranks but does not produce spark on all 6 spark plugs. When the key is on, dash turns on, neutral light and cruise control light turn on. Tried cranking while the clutch is engaged or disengaged, no spark.

I have very basic mechanical skill. So please bear with me.

Please let me know where I should begin with.

Thank you


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