[sr73087]

So battery static voltage was 12.5, key on engine off dropped to 12.0. The battery drops to just under 11v while cranking. I even spayed some carb cleaner in the carbs just to make sure its definitely not a fuel issue somehow and nothing.

Tested valve cover to ground and .2 ohms. So the path to ground should be ok. Anyone have any ideas what is next?

[92xjunker]

Try to start it normally, with the choke on. Then pull the plugs and see what they look like. Wet or dry, smell like fuel, warm or cold? Check spark on all of the plugs? Wires in the correct place, 12v and the plug wires. Might be the pulse generator.

[ZookRick]

Why dont you hook up a car battery to it with cables and car engine off. Its not the car battery itself that is the problem, its the charging system in the car/truck. If you get good spark/ or it starts then you know for sure the bike battery is toast.

[sr73087]

Try to start it normally, with the choke on. Then pull the plugs and see what they look like. Wet or dry, smell like fuel, warm or cold? Check spark on all of the plugs? Wires in the correct place, 12v and the plug wires. Might be the pulse generator.

Plugs are wet,cold and smell like fuel. All plugs have spark.


Checked the pulse generator and it ohmed out just fine at 169 ohms, however the min peak voltage was well under 1v. Not sure if I am definitely checking this right.

Have not checked the secondary ignition circuit or if the wires are installed in the proper sequence. I know the firing order is 1-2-4-3, but not sure how to determine if the wires are going to the correct coil.

[sr73087]

Plugs are wet,cold and smell like fuel. All plugs have spark.


Checked the pulse generator and it ohmed out just fine at 169 ohms, however the min peak voltage was well under 1v. Not sure if I am definitely checking this right.

Have not checked the secondary ignition circuit or if the wires are installed in the proper sequence. I know the firing order is 1-2-4-3, but not sure how to determine if the wires are going to the correct coil.

http://katriders.com/vb/showthread.php?t=138663

Found part of the answer to the firing order but not sure which is which.

[shpielers]

1 and 4 hooked up to left coil, 2 and 3 hooked up to right coil. As you're sitting on the bike, 1 is on the clutch side, 4 is on the brake side.

[92xjunker]

Left coil 1&4. Right coil 2&3
Left coil 12v org/white and black, Right coil 12v org/white and black/white.
Unless you have a peak voltage adapter, you'll never see the proper peak voltage generated by the pulse generator. P/N 09900-25008 which is $800.

[sr73087]

Left coil 1&4. Right coil 2&3
Left coil 12v org/white and black, Right coil 12v org/white and black/white.
Unless you have a peak voltage adapter, you'll never see the proper peak voltage generated by the pulse generator. P/N 09900-25008 which is $800.

Yea I just tried to probe the pin with t-pins and alligator clips. So you would so its likely that its probably fine?

The only other issue that sticks out to me is that the smaller clip on the icm is not clipped in well. The lock that would hold it in tight is broken but the connector is still pushed in, if this was an issue I would think it would be something caused by hitting a big bump or something. Most of the wiring that I tested to the icm was good.

1 and 4 hooked up to left coil, 2 and 3 hooked up to right coil. As you're sitting on the bike, 1 is on the clutch side, 4 is on the brake side.

Thanks, I check this out as well as ohm out the secondary circuit. Plugs were changed when I first purchased the bike.

[92xjunker]

I have seen pulse generators test fine but, were faulty...so it's a crap shoot.

[sr73087]

Is this a part that fails often?

Is this isn't it and I check the secondary ignition circuit and firing order, what would be your next guess?

[92xjunker]

No, not that often. If your charging system went south it usually frys things, that would be one of those things. You've exhausted nearly every venture. I'd get one off EBay and swap it out. Pretty cheap and alway good to have parts in storage.

[sr73087]

Ordered it but if it's bad would I still have spark? I guess it's possible since the testing process doesn't mention spark. Have you seen the icm ever go?

[92xjunker]

If your getting spark, the ICU is working, that is what triggers the coils. And yes, we had spark too, the symptoms just pointed to the pickup, I took one off a project and installed it for peace of mind and it started.

[sr73087]

Do you know what your friend's symptoms were prior to replacing the pulse generator?

[92xjunker]

Wouldn't start but, everything checked ok, getting fuel just not starting.