Engine missing at speed and under load. Advice please!

[coupenut]

Interesting thing happening to the Z. Hopped on it in the morning to go to work and no blinkers. I did not think much of it till the ride home. The bike started missing at speed. I got off the gas and back on and it went away. Further down the road and closer to home it happened again several times.

Back to the blinkers. I wired L.E.D.'s to the bike using the flasher relay method. It has worked flawlessly, until now. I looked to see if the relay was broken or the wires disconnected. I checked to see if it was broken because I was riding dirt the other day and went over the bars and the front saw minor damage. The relay was cracked and the wires were disconnected.

My question to the experts is; Can the two wires (orange and blue on the flasher circuit) touching cause a short in the system to create a problem with the ignition system?

Please advise!

[William1]

Do a voltage check at the battery. Engine off, at idle and at mid throttle. Inspect the white plastic connector near the fuse too, look for signs of corrosion.

About the blinker wires, a short there would only cause the signals to light and not flash.

[coupenut]

Thank you William. Congrats on the moderator gig.

[Wayward Son]

id say you have a charging system issue.

[coupenut]

Thank you Eddie, good luck on the new shop venture. I am sure SSW will be a staple in the motorsports world. Thank you for staying on TT. This is a great conduit for the regular Joe to the DRZ guru.

[William1]

Thank you William. Congrats on the moderator gig.

Thanks! ?

Now go do those battery tests.!

[coupenut]

Thanks! ?

Now go do those battery tests.!

Just performed all of the battery,rr, and stator tests. Everything is within the limits stated in the FAQ's area: https://www.thumpertalk.com/forum/showthread.php?t=627031

I fixed my blinker problem. The tumble took it's toll. The flasher relay was cracked and the blue and orange wires were touching each other.

This bike is 2 years old with 37,000 miles on her. I think if the problem persists, I will be looking at replacing the battery.

Thank you for your expert help Eddie and William. It is much appreciated. I would not know where to start if it wasn't for the both of you and TT.

Time to put her through her paces and see what happens.

[coupenut]

Everything is working good for the most part. I put an additive in the fuel to break up and debond any carbon in the intake and combustion areas. The bike hicupped a few times today but nothing like it did Friday. I was told to run a few tanks of this treatment and let it work on the carbon deposits. It seems to be working on the first tank I ran through it. The next tank will happen later this week.

Is it possible that a valve was being held up by carbon deposits?

[William1]

Possible but doubtful. More possible, though still remote, was debris in the carb. Might want to drop the float bowl for a look see.

[coupenut]

Yeah, that crossed my mind. Another thing that crossed my mind was dirty or possibly water in the fuel.

[coupenut]

Well, I stopped to fuel up, shut off the engine and when I was done tried to start and nogo. She did not start. I was close to home so I pushed it the rest of the way.

I pulled the plug and checked to see if it had spark and nothing. I had the old plug so I checked it and no spark with that one either. I will list all of the ohm and volt readings in a bit. I did all of the checks again and got the readings I got the first time. This leads me to believe I have done something wrong.

The only tests I did not do was the peak output tests. This will be done today. I will post the findings of them also.

If anyone has any input it will be appreciated. Thanks in advance.

[f2dog]

Check if the cables round the steering stem is in good condition, sounds like you have a major electrical error.

Check the wires out of the ecu as well.

Good luck ?

[Tailender]

My stator went about three weeks ago and it would start but backfire with any throttle. It's a simple check on the stator. Maybe try that?