Upgrade to enjoy this feature!
Vital MX fantasy is free to play, but paid users have great benefits. Paid member benefits:
- View and download rider stats
- Pick trends
- Create a private league
- And more!
Only $10 for all 2024 SX, MX, and SMX series (regularly $30).
Apparently my friend has the same issue. I wanted to swap his fuel tank with mine to check fuel pump but now I can't. He also told me when he touches the clutch the bike stalls. For example exiting a corner with clutch, his bike will shut off.
I will upload a video I did today but seems like there's no problem. As I said it comes and goes. Something triggers it somehow but now it didn't. Bike fired cold with 1 kick.
How come when me and my friend (same bikes) touch the clutch while riding, the bike shuts off?
What about the "Abnormal" fuel pump and coil?
Btw, if I move the TPS sensor while it's attached to the computer, I can see the V changing? So it will be simple to adjust without any 5V battery and cables.
The Shop
Pulling the clutch should have zero effect on the bike dying. This is what i want a video of. The only way pulling the clutch kills the bike is if something is broken and it stalls the motor.
What about the "Abnormal" fuel pump and coil?
Oh I forgot to mention, When attached the Kawi Computer, the TPS V didn't change while playing with the throttle. It was still 0.57.
I don't think something is broken, but we tested it a few times, when riding in the parking lot in 1st or 2nd gear, pulling in the clutch killed the bike. Same with my friend, exiting corners at the track with clutch kills his bike too. Doesn't happen all the time.
https://youtu.be/6dmazGizVbM
I tried to put in 1st while clutch pulled and revving but it didn't die. Yesterday it did. (doesn't jump or bump, anything, just suddenly shuts off quietly).
https://youtu.be/rCtc0TuIJpk
Because you already know you have fuel delivery issues, id start by first setting your tps voltage to .62. Then fuel pump. Cheapest fix to most expensive.
What happens on the kawi efi, is if the ecu detects fuel pump issues it will kill the ignition. Im leaning towards your fuel pump having an issue after you rev the bike up and it no longer being able to do the job. Once it kills the ignition it flags it in the kawi diag tool.
Quantum makes replacement pumps that arent $400 like the oem one. Ive got one in my kx450 and it works great.
I dont think its something mechanical. Everything sounds fine.
if the fuel pump is bad, why in the second video the bike was fine? I even tried to ride it and it in the parking lot and felt like there's no issue.
How can a faulty pump just come and go?
Also if both me and my friend have the same issue of faulty fuel pump, can we report a claim to our local dealer where we purchased it and get it fixed for free or some serious discount? Quite ridiculous it got bad after 34 hours and I'm not riding hard.
Could it be an ignition coil issue or the ignition coil shows "Abnormal" because of the bad fuel pump killing the ignition?
Can't believe my local dealer can't know these things and I need to dig in forums to get the answers ):
Anyways, electrical stuff can be on and off. I dont know why. I had a sensor on my kx450 that gave me intermittent issues.
If both your bikes are doing it, my guess is you got fhe same batch of dirty gas and it broke the pump.
Edit: just to add, if the ecu detects ignition coil issues it also kills the bike. All of this type of info is in a chart in your service manual.
My friend just updated me that they found some ripped sensor wires under the air filter? Sounds totally weird.. He said they fixed the problem.
(He didn't do a diagnosis like I did with the Kawi computer).
That sensor would likely be the air temp sensor. If its broken its going to throw everything off.
The TPS should have increased voltage on the screen when revving?
I can try and do a manual test without the software for a last resort.
Can this issue cause the fuel pump / ignition coil to show "Abnormal" on the software?
How can this sensor go bad so fast by itself? Really hope Kawi gonna take the blame.
We got 0.77 ohm at closed throttle and we checked again and got 0.70.
WOT I think we got around 4.7, don't remember exactly.
The Sensor showed ~5.00 as most output.
Don't know why with the Kawi software it showed 0.57 but didn't change when moving throttle. Maybe it can't check it.
You need to measure VOLTAGE. Not ohms. You dont have voltage in the system without a 12v battery.
Pit Row
Can you upload the Ignition Coil page too? Want to see how much resistance for the coil test.
I'm starting to lose my mind over this bike, the shop doesn't do anything, my bike just sits there.
I think I will call a Kawasaki manager to tell them about my local dealer. It's been 2 weeks now and nothing new. They don't have a clue about the issue.
The shop doesn't want to order an ignition coil to check if that's the problem because if it's not they'll have nothing to do with the coil.
What a joke! Return it and get a refund.
I think the problem started when I tried the aggressive coupler for the first time. The bike was sitting for 1.5 months before that.
Maybe that + bad fuel caused the problem?
I will try to take old gas out and put new gas. Maybe it will help ): I'm so upset, have new gear, new tires, perfect weather now, but can't ride.
I know the factory shows and in fact is set lower (.48-.5v) when shipped, but that is just too lean.
You are also looking for a reading of about 5v at WOT to be sure the TPS is working correctly. The TPS reading should change ( increase) as the throttle is opened more and more. If this in not the case, the TPS is not working correctly. It could be a wiring harness issue or a bad TPS.
Also your old gas will have a big effect on the running of the bike. If the bike set that long with old gas, then you may also have a dirty fuel injector. Clean it. The old gas can also make the fuel pump filter become dirty.
Paw Paw
The bike needs more fuel to run correctly.
The shown .57v at the set rpms in the above supplied graphs is indicating a lean condition as well, but even that is based off the manuals initial setting and is too lean.
You ad that to the old fuel issue and there are problems to be corrected.
It is like everything is set lean for some EPA or federal regulation issues when these bike need more fuel for proper performance.
Paw Paw
Anyways I called the Kawasaki manager and told my story, and the bike being at the shop for 2 weeks with not progress, and they will pickup my bike (220 miles away) and fix my bike. Let's hope for the best.
While it goes to the Kawi center, should I have the fork oil changed? Never had it done before.
Should I get the valves inspected / adjusted? I mean, finally a professional will have my bike, thought it would be a good idea to do everything needed.
Edit:
So after checking the bike to see where someone touched (bike with a lot of dust), seems like the only thing is the kill switch and launch control buttons, both the lines look like they been loosened. I think same thing on the gas cables. Guess I'll never know exactly what he did (and let's hope he really fixed the problem, didn't ride yet).
Paid $160 to fix it. I know I was hustled but had no choice ):
Post a reply to: 2018 KX250F shutting down