Engine shut off while downshifting

[2LZ]

To the best of my knowledge, I don't believe that this has been a problem with our carbureted friends. I wonder if the tight exhaust valves are causing a brief lean condition that the EFI isn't adjusting to in time?

[DanKearney]

Originally Posted by kumatae

As I've been troubleshooting with Gerry from CSC, he told me to perform a compression check. I also mentioned to him that I'm having issues with starting as well. I need to use the throttle when starting and when my bike stalls when downshifting, it takes a while to get the engine back started. Anyways, back to the compression check, I registered 50PSI and he said, I should have seen 90PSI.

Did you remember to hold the throttle fully open when you did the compression test? If you did not, that would account for the low psi.

Cheers,

Dan K.

[fjmartin]

What I can say when mine would cut out is that restarting was tough. LOTs of cranks and found that I had to twist the throttle to finally get it to start. Both when mine was a cold or hot cutout

[madsocial]

Originally Posted by fjmartin

I started having issues with mine cutting off. First it was when it was cold and then when I was on a group offroad ride it cut off a bunch of times when I reached a gathering point and pulled in the clutch and released the throttle. I adjusted the valves and found that the exhaust valves were tight but the intakes were perfect. Now adjusted I haven't had a cutoff. Valves adjusted at 500 miles and again at 2000ish. 2000 is the time when it was cutting out. At 2200 miles now with no cut off. Not a ton but a decent indication.

That really worked for you. I have done 3 valve jobs on mine and while I started this post, the issue still occurs. I honestly gave up for awhile trying to figure it out. I've been keep the clutch held in and the throttle up so it doesn't stall. Now that it is full out winter here in my new home of NY state, I am going to just take the darn thing apart and check ever darn wire and whatever else there is to check lol.

[fjmartin]

It did...so far!

[2LZ]

The frustrating part is that when we bought both RX3's, of course, I was super-anal, adjusted the valves, went over every possible wire, connector, iridium plug, etc....and it does occasionally stall (less the more I ride it). it also has always taken a few cranks to get it fired.

My brother!? He hasn't even washed the damn thing yet and it fires right up and has never stalled even once! WTH?!

[BlackBike]

Originally Posted by 2LZ

The frustrating part is that when we bought both RX3's, of course, I was super-anal, adjusted the valves, went over every possible wire, connector, iridium plug, etc....and it does occasionally stall (less the more I ride it). it also has always taken a few cranks to get it fired.

My brother!? He hasn't even washed the damn thing yet and it fires right up and has never stalled even once! WTH?!

Now that you have 2, you can do a swapapolloza and determine the issue. Swap over the ecb (engine control board or whatever it's called...plug and play right?) and see if the problem follows to the other bikes. as I think you have said in the past , it's probably a glitch in the software.

[madsocial]

BlackBike you make a good point. If I had 2 ..I would do a swap as well

[Sullybiker]

This was also an issue on early Ninja 300's, I think they recalled for it and changed something in the ECU firmware.

It wasn't every bike, either.

[rojo_grande]

Tutorial from CSC on the some things to look at if you are experiencing the stalling issue.

http://californiascooterco.com/blog/?p=24180

As usual with CSC, they are being proactive when dealing with persistent and /or sometimes inconsistent problems with the RX3 rather than brush it off or sweep it under the rug.

Rojo

[AdventureDad]

I agree. They are seriously on top of listening and taking action. I haven't had a stalling problem, but I am interesting in this whole colder plug recommendation thing. I understand heat ranges and the general idea, just not totally clear on how it correlates to our bikes, the pro's and con's of it. Maybe someone can explain?

And if someone got my hint , pretend like you are explaining it to a dolphin.

[Huck369]

A new injector seems to have fixed mine....

[madsocial]

Originally Posted by rojo_grande

Tutorial from CSC on the some things to look at if you are experiencing the stalling issue.

http://californiascooterco.com/blog/?p=24180

As usual with CSC, they are being proactive when dealing with persistent and /or sometimes inconsistent problems with the RX3 rather than brush it off or sweep it under the rug.

Rojo

Thanks for posting this. And Yes! They are always listening!

I have done almost everything on that blog so far. I have not put a new fuel injector or fuel filter. The bike doesn't have 8,000 miles. But I guess we can just try to change them both out and call it good. Seriously, thanks Rojo for sharing the blog here.

[madsocial]

Originally Posted by Huck369

A new injector seems to have fixed mine....

Did you change out your fuel filter as well?

[Huck369]

Originally Posted by madsocial

Did you change out your fuel filter as well?

I did, but changed the filter first, and it was still dying at idle, installed the new injector next and it seems to be fixed....but I haven't ridden it a lot since installing it...just gotten to ride to work a couple times, due to winter weather...rode it today....