98 EV fuel pump/no spark

[flower_king001]

Hi,

 Replaced entire clutch components on my 1998 EV. Everything went smooth until...Bike ran prior to clutch replacement but no have no spark and the fule pump is not energized.

1. checked all replays and fuses
2. side stand switch has been bypassed years ago
3. kill switch seems to function correct as when it the run position the starter will engage and when off it will not.

A friend of mine thinks perhaps the ECU but I keep thinking it's something simple.

Any thoughts or suggestions must welcome.
Thanks

[Tkelly]

I had crank sensors die on  2 bikes.

[Vagrant]

That one has a flywheel sensor so you had to remove it. Also a crank sensor in the front left side of the block. FYI, it is something simple.

[Tkelly]

I think flywheel sensor is the one.

[jhem68]

My 99 Bassa had two electrical connectors that had to be disconnected if the tank was removed for some reason. One was for the petcock, and one went to the fuel pump. It was important to reconnect correctly to avoid problems with the fuel pump. The 98 EV system might not be the same, but it never hurts to double check that possibility if the tank was removed.



John H

[flower_king001]

Thanks thus far but either the fly wheel or crank sensor will not keep the fuel pump from being energized.

Hi,

 Replaced entire clutch components on my 1998 EV. Everything went smooth until...Bike ran prior to clutch replacement but no have no spark and the fuel pump is not energized.

1. checked all replays and fuses
2. side stand switch has been bypassed years ago
3. kill switch seems to function correct as when it the run position the starter will engage and when off it will not.

A friend of mine thinks perhaps the ECU but I keep thinking it's something simple.

Any thoughts or suggestions must welcome.
Thanks

[johnwesley]

It really sounds like a kill switch kickstand issue. I know it was disabled long ago, but is it possible it was undone when doing the clutch?

Just for curiosity, did you unplug the computer when you started the work? I normally would start with a wiring diagram and work back from the fuel pump, checking power as I go. I normally find something I did wrong, such as a plug that was left undone.

[guzzisteve]

An idea, did you mount the flywheel back on exactly where it came off? 4 prongs on wheel and 6 bolt holes.
The fuel pump wire has a small connector that is 2 pin and round somewhere under sidecover.

[michaell32]

Looking at the wiring diagram, the fuel pump, injectors, and coils get their power form the power relay on a red/black wire.  The power relay is activated after the ECU relay is activated.  How did you check your relays?  A simple click means nothing.  Have you checked voltage at the pump to verify its not getting power?  The power relay is grounded through the ECU while the ECU relay looks to have it's own ground wire.  Maybe that wire wasn't reconnected or bolted back onto the powertrain.  There is also a diode on the ground wire for the ECU relay.  That diode could have gone bad and acting like a broken wire.

[Wayne Orwig]

When you say no fuel pump, do you mean NEVER? Does it at least run the pump for the three seconds or so with key on?

If no pump, ever, then it is not a timing sensor.
I assume you checked all of the fuses and relays. And the ECU connector is tight. Try GuzziDiag on it to verify the ECU has power.

If it primes, but does not run when trying to start, I will guess maybe a timing sensor.

[n3303j]

About a year ago I lost fuel pump power on my '98 V11EV. Turned out that the 2 pin connector fractured internally between the lead in wire and pin.
Did you disturb that connector during your service operation?

[flower_king001]

hi all,

 Thanks for all the help with this issue here, private message and even a phone call with a member here and my friend J.Z,

 As I suspected it was something simple as follows. We had 1 too many wires connected to the positive side of the battery and at the time only had 1 connected to the ground. Removed the "small square" cable and hooked it to the negative side and fuel pump energized as normal and started. I was able to get the bike trailered back home to TN and took her out for a hour ride!

Thanks again!

Hi,

 Replaced entire clutch components on my 1998 EV. Everything went smooth until...Bike ran prior to clutch replacement but no have no spark and the fule pump is not energized.

1. checked all replays and fuses
2. side stand switch has been bypassed years ago
3. kill switch seems to function correct as when it the run position the starter will engage and when off it will not.

A friend of mine thinks perhaps the ECU but I keep thinking it's something simple.

Any thoughts or suggestions must welcome.
Thanks

[guzzisteve]

That is why you tag wires w/tape & mark them!!.

[BMCMOTO]

I try to keep them separate with a zip tie through the holes.

Brian

[flower_king001]

Absolutely!

But in hindsight have done this job before without any hiccups. Actually, you would have thought the factory would have done a better job but...go take a look at the factory schematics and see what a blunder they are.

That is why you tag wires w/tape & mark them!!.

[Wayne Orwig]

hi all,

 Thanks for all the help with this issue here, private message and even a phone call with a member here and my friend J.Z,

 As I suspected it was something simple as follows. We had 1 too many wires connected to the positive side of the battery and at the time only had 1 connected to the ground. Removed the "small square" cable and hooked it to the negative side and fuel pump energized as normal and started. I was able to get the bike trailered back home to TN and took her out for a hour ride!

Thanks again!

When John called yesterday and said you had 12V on both pump wires, I told him that was it. The factory doesn't do a great job of identifying what wires go where on that 98 EV.

[Tkelly]

Congratulations!I am always thinking these problems are the same as the failed sensor that stranded me a couple times.As others have said check whatever you had messed with first.I had a Stelvio that had idiot lights shining but wouldn’t crank,sure enough,when I added a pigtail I tightened the ground on the battery with a screwdriver instead of a wrench,several hundred miles later I had a tow to a shop ,the guy was closing up Saturday night said he might be able to look at it on Monday.Someone on here asked if all the battery had been messed with.I was at the shop when it opened Mondaywith my 10mm wrench ,what’s when I learned that the the Phillips head hole is for ease of installation not installation,vibration is a real thing.Igave the guy a gas card for the storage and made it back from Maine with no issues.

[jhem68]

Glad you sorted it out and I would also like to thank you for the follow up results!

Sometimes these threads become almost like a TV quiz/game show, and I am mildly entertained enjoying the prospect of getting the answer to the question and seeing how the answer compared to the "audiences" response.

Enjoy your next ride.

John H