Thread Rating:
  • 4 Vote(s) - 3.5 Average
  • 1
  • 2
  • 3
  • 4
  • 5
No spark, won't start now after pulse generator replacement
1985 Aspy

Had an issue where the bike would just die after a mile or so. It would crank, backfire but not start. Once it was cooled down it would start right up, go for about a mile, and do the same thing. Problem pointed to the pulse generators so I ordered Honda part number 30300-ML8-680 and replaced the pulse generators. Now the bike will not start. I don't have any spark.

My fear is that when I pulled the radiator I disconnected a wire. If you see the photos below I marked, with a small yellow arrow, a wire that doesn't seem to have a home. I looked (and felt) everywhere and I can't find where it should go.

I am still learning. Appreciate any help you guys can give me Smile

Thanks!
Cliff


Attached Files
.jpg   DSCN0048.JPG (Size: 104.43 KB / Downloads: 659)
.jpg   DSCN0049.JPG (Size: 112.6 KB / Downloads: 654)
Reply
#1 03-24-2011, 06:38 AM,
Can't tell from the pics what wire you are referencing. Should be a simple un-plug and re-plug to replace the pulse gens. My bike is an '84, so it is different. Some of the other guys should be able to help. Luck.
Bob
Reply
#2 03-24-2011, 06:47 AM,
what color is that wire?

where does it trace back to?
1987 Aspencade 129K
1986 SEI 93K
2014 Tri-Glide HD 17K

Hancock,MD
Reply
#3 03-24-2011, 07:02 AM,
I modified the pics so it is clearer. Not an issue with the plugin for the pulse generator, that was easy. Just a fear I unplugged something else in the process.

I will have to trace the wire when I get home. I thought it went to the ICU.
Reply
#4 03-24-2011, 07:07 AM,
sure looks like one of the coil wires. Hard to see where it connects you pretty well have to do it by feel Smile

The coils are situated under frame, the spade contacts facing forward, there are two on each coil

If it is the blu/yellow, that is the grounding wire for the coils.


Attached Files
.jpg   coils.jpg (Size: 48.82 KB / Downloads: 654)
The only stupid questions are the one's that are not asked.

Reply
#5 03-24-2011, 07:11 AM,
was thinking same here,did the bike start and run after the pg replace?
1987 Aspencade 129K
1986 SEI 93K
2014 Tri-Glide HD 17K

Hancock,MD
Reply
#6 03-24-2011, 07:14 AM,
Actually have a pic of that from the underside. I wonder if I accidently unplugged a coil wire and plugged in the wrong one.

Bike did not start or run after the PG replacement.


Attached Files
.jpg   DSCN0042.JPG (Size: 68.29 KB / Downloads: 649)
Reply
#7 03-24-2011, 07:19 AM,
i'd say that's your problem area
1987 Aspencade 129K
1986 SEI 93K
2014 Tri-Glide HD 17K

Hancock,MD
Reply
#8 03-24-2011, 08:06 AM,
chorvath Wrote:Actually have a pic of that from the underside. I wonder if I accidently unplugged a coil wire and plugged in the wrong one.

Bike did not start or run after the PG replacement.




this next section is just a guess

You wouldnt by chance happen to have an after market stator harness installed would you? part of that entails replacing the coil wires.

They also happen use a brown wires which it looks like that is what is connected to the coil.

Have a look at both coils and compare the wiring colors to that on the posted schematic.

If this is what has happened, replace the brown wires with the the correct ones and try starting

I can post the wiring instructions if the above is the case.

But its just a guess
The only stupid questions are the one's that are not asked.

Reply
#9 03-24-2011, 08:25 AM,
Looking closer yes you have the add on harness

The relay that you can see above the frame sends power to the coils directly from the battery. It is actually a good system

Just make sure that relay is connected and working.

I shall post the instructions then you can print them and keep them.

The PO should have given you these.


Attached Files
.jpg   harness 3.jpg (Size: 156.29 KB / Downloads: 645)
The only stupid questions are the one's that are not asked.

Reply
#10 03-24-2011, 08:36 AM,
I have an '84 Interstate, but this applies to all GL1200, make sure the air gap is set per your year. Also, since it is still apart, make sure the PG plug terminals are clean and making good contact, wire ends are not frayed or insulation melted. Ad a dab of dielectric before plugging together. Let us know and Good Luck.

-Ride On
enjoying the view from the saddle....... due mainly to the people and information found within this site
Reply
#11 03-24-2011, 10:43 AM,
Hmmm, add on harness. That was on there when I bought the bike four years ago. Learned something new today Smile

Ok, so the mystery wire isn't a mystery anymore. You pull those from the coils and attach one to the add on harness. There will always be a spare with this harness.

Traced the orange power wire all the way back to the battery. It looks good. Fuse in that line is good. Brown wires attach to the coils on each side. Blue wire on the harness connects to the wire from the coils, black wire attaches to the ground. I checked all the wire connections and they seem fine. I need to get an ohm meter to check for power. to be 100% sure.

Decided to hardwire the kill switch to make sure that was not the problem. Cranks but still no spark.

Question, could the relay in the aftermarket harness be bad? Is that something you could pickup at say Autozone?
Reply
#12 03-24-2011, 04:12 PM,
Ok, I'm an absolute idiot. That will teach me for working without enough sleep or light.

It really really helps if you install the pulse generators in the right direction. Having one backwards will cause your bike to not fire up the sparkplugs or start.

She started nice after I corrected that minor issue...

But hey, thanks for all of your help everyone! I gained some hard earned knowledge about my bike that I didn't have a clue about going into this issue Smile

Now just need to replace what looks like a 26 year old radiator hose and I am off and running Smile

Cliff
Reply
#13 03-24-2011, 05:22 PM,
if you dont know a napa 7733 or equivalent will work.it is a cut to fit hose,the other part will fit the top hose
1987 Aspencade 129K
1986 SEI 93K
2014 Tri-Glide HD 17K

Hancock,MD
Reply
#14 03-24-2011, 07:19 PM,
neoracer Wrote:if you dont know a napa 7733 or equivalent will work.it is a cut to fit hose,the other part will fit the top hose

I had trouble getting the NAPA 7733 here. Timing belts no problem...go figure. I went with a Carquest cross reference. Picking it up tomorrow Smile
Reply
#15 03-24-2011, 07:33 PM,


Possibly Related Threads…
Thread Author Replies Views Last Post
  pulse generator test dvjoiner 3 644 05-29-2013, 11:14 AM
Last Post: bs175dths
  Pulse Generator removal question bassplayer88 15 1,042 10-27-2012, 09:31 AM
Last Post: kwatts
  Pulse Generator Resistance 5 557 04-16-2012, 02:09 PM
Last Post: SIR tricky
  pulse generator wire connetion 6 589 10-05-2010, 07:18 AM
Last Post: kwatts
  Pulse Generator Lesson? KnoxSwift 10 1,549 07-26-2010, 08:43 AM
Last Post: KnoxSwift
  86 aspen won't start, weak spark 3 522 09-10-2008, 01:27 PM
Last Post: Guest
  What is an ECU, ignitor or a pulse generator? admin 13 3,176 10-12-2007, 09:38 PM
Last Post: admin

Forum Jump:


Users browsing this thread: 1 Guest(s)

Contact Us | GL1200 GOLDWINGS | Return to Top | | Lite (Archive) Mode | RSS Syndication
google-site-verification: googled4b4fe31e07b65d8.html