no spark


Information and questions on GL1200 Goldwings (1984-1987)
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rwcebu
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Joined: Mon Aug 02, 2010 6:09 pm
Location: Philippines
Motorcycle: 1986 honda gl1200

no spark

Postby rwcebu » Sat Jan 08, 2011 6:45 pm



I have an 86 GL1200 Aspencade and I am not getting any spark to the plugs. Switch on, everything works, even the starter. But it will not fire. I need help.
I am a retired vietnam vet and I now live in the Philippines. my bike is all that I have. It is impossible to find anyone here that can repair a big bike. And even harder to fine parts or anyone that will ship to the Philippines. At this point, I dont even know what the problem is much less fixing it.
Can anyone help me?



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WingAdmin
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Re: no spark

Postby WingAdmin » Sat Jan 08, 2011 8:43 pm

Have you checked the plugs to be sure that there is actually no spark, or are you just assuming that's the problem because it isn't starting?

If there is actually no spark at ANY of the plugs, and you've got normal power everywhere else, it points toward the pulse generator being the problem.

rwcebu
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Location: Philippines
Motorcycle: 1986 honda gl1200

Re: no spark

Postby rwcebu » Sat Jan 08, 2011 9:12 pm

Where do I find the pulse generator? And yes, when I can hold the plugs in my hand while the engine is turning over. I can assume that there is no spark.

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HALBUDD
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Motorcycle: 1984 gl1200a&1985GL1200A & 1996 gl 1500 aspy. us army 74-77

Re: no spark

Postby HALBUDD » Sat Jan 08, 2011 9:39 pm

rwcevu Your pulse gen. is located in side your front timing belt covers . You will need to pull your timing belt covers off to get to them. If you dont have shop manual may I suggest looking at the top of this site in manuals and down load them. You can also get a manual for your bike from goldwing chrome site good luck. Hal
A woman that can use tools is worth her weight in gold !!

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WingAdmin
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Re: no spark

Postby WingAdmin » Sat Jan 08, 2011 11:51 pm

Actually, isn't the pulse generator located on the back of the engine on the 1986?

Just checked, and it is on the back of the engine, underneath a cover:

Pulse generator
Pulse generator


To check the pulse generator coil, disconnect the pulse generator on the left side (near the battery):

Pulse generator connector
Pulse generator connector


Using an ohmmeter to measure the resistance between the pins on the connector, you should measure between 1.1 K and 1.3 K.

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HALBUDD
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Re: no spark

Postby HALBUDD » Sun Jan 09, 2011 12:13 am

Looked back at manual 1984 1200 aspy is located in rear of the engine from what is shown in book. Later models 85 and up said it is in the front timing belt covers . Just going from hayes shop manual,let me know if your manual said different. Thanks Hal
A woman that can use tools is worth her weight in gold !!

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WingAdmin
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Re: no spark

Postby WingAdmin » Sun Jan 09, 2011 7:07 pm

This is the image from the 1986-1987 GL1200 parts manual for the pulse generator, showing it with the cover mounting it on the rear of the engine:

Pulse Generator 86-87 GL1200
Pulse Generator 86-87 GL1200

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Mooseman
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Re: no spark

Postby Mooseman » Sun Jan 09, 2011 10:08 pm

1985 thru 1987 A & I, have the pulse generator mounted on the fron of the engine under the timing belt covers. You will see where the wires go in just to the left of center as you look at the covers from the front. The 86 SEI has the pulse generator at the rear. Your photo showes the SEI model diagram. I will post a picture in my photos.
Mooseman
Enjoy the ride. They are all good, just some better than others.
Mooseman

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WingAdmin
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Re: no spark

Postby WingAdmin » Sun Jan 09, 2011 10:45 pm

I pulled up a different parts diagram, and it showed the diagram I posted as belonging to the 85 Limited and 86 SEi only. It has a different rear-mounted pulse generator (with a roundish cover) belonging to the 84 Standard, 84 Interstate and 84 Aspencade.

As part of the timing belt assembly, it shows pulse generators under the timing cover for the 85 Interstate, 85 Aspencade, 86 Interstate and 86 Aspencade, and 87 Interstate and 87 Aspencade. So you are correct!

Gotta love unclear and contradictory Honda manuals. :)

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starfleetengineer
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Re: no spark

Postby starfleetengineer » Sat Jan 15, 2011 2:44 am

I would also check to make sure you have power going to the coils when you turn the key on. It could be as simple as a blown fuse or broken wire.
How many times do I have to tell ya,,, The right tool for the right job!

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TDarby719
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Motorcycle: 1985 GL1200 LTD

Re: no spark

Postby TDarby719 » Wed Mar 30, 2011 10:00 pm

I know this is an older post but gotta toss in my two cents.

A little clarity for the pictures posted in this thread........wingadmin's first pictures are 1984 and earlier, his second is the pulse generator assembly for LTD and SEi ( GL and GR) for pulse advance from the computer (sometimes called the cam angle sensor by people), and the pulse generator (no photo here) with a single lead is under the front cover for the LTD/SEi (PS) below the crank (sometimes called the crank angle sensor by people). The two-lead pulse generator is for the carb models and is also in the front cover from 1985 and later. Referring to the GL1200 in this reply.

tj max
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Motorcycle: 1986 gl1200 interstate

Re: no spark

Postby tj max » Mon Sep 02, 2013 10:48 am

1986 gl1200 interstate,
Where is the plug for pulse generators located and what are the testing procedures for this.any other info would be great.

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roadwanderer2
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Re: no spark

Postby roadwanderer2 » Thu Nov 05, 2015 9:29 am

im not sure if this is the right place for this question, but im going to ask it anyway, forgive me if it seems like im trying to hijack this thread. its not my intention, but i cant find any answers anywhere else in here.....i have a "new to me" 86 GL1200 aspencade SEi that i started working on and im looking at the crank sensor thats mounted on the front of the motor just under the crank pulley and im following the wires looking for where its supposed to be connected, and its not even connected to anything :x. does anyone know where this thing is supposed to be connected at? i cant find the other end of this connector. as far as i can see, the wire runs thru the front engine case via a rubber grommet and up the left side and into an area thats in the left side of the fairing and connects somewhere up inside the fairing wiring but i cant find the other end of the connector.

stuart.

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