Bike was cutting out . . . . Help in Daytona

[RVH]

Hey guys, I was leaving Main Street last night, been in slow, stop & go traffic all day when all of a sudden my bike cuts out on one cylinder. Not just a skip, it was not firing at all. I finally got out of the traffic then about 1/4 mile it starts popping & spitting then goes to running normal. Ran fine all the way to the condo, I shut it off, crank back up and ran it don the street. It ran fine. Question is, could this have been a piece of carbon or buildup stuck on the electrode or is this a sign of something else going on?

 

[TheDeadOne]

Yep, plug fouled. :2thumbs:

Just put in a new set when you get home, you should be fine. :2thumbs:

dead

 

[O-man]

Yep, plug fouled. :2thumbs:

Just put in a new set when you get home, you should be fine. :2thumbs:

dead

:iagree:

 

[RVH]

Thanks guys. That of course was the first thing I though of but when it went to running good again, I thought no, once it fouled it was fouled. I'll grab new ones & throw them in today. Thanks again

 

[AIH SWANK]

You might try adding some Lucas Fuel treatment also. I do every tank!!! I swear the bike runs better. You never know what you are getting when you buy gas on the road!!! I keep 3 or 4 little 1 oz containers in my tool bag, dump one in with each tank. Supposed to keep the intake/carb cleaner as well. A bottle only costs $8 and last quite a while.

 

[woodbutcher]

if it was really hot, you might want to check to see if the oil smells burned. change it if it does.

 

[stlmikie]

Not being a smart ass but don't some of the later models have a feature that makes one of the cylenders cut out if it starts to overheat? He did say it started when he was sitting in traffic and after he started moving again it went back to normal right? I'm almost sure I read about something like that here somewhere.

 

[woodbutcher]

Not being a smart ass but don't some of the later models have a feature that makes one of the cylenders cut out if it starts to overheat? He did say it started when he was sitting in traffic and after he started moving again it went back to normal right? I'm almost sure I read about something like that here somewhere.

harley does, don't think the dog does.

 

[Raywood]

Not being a smart ass but don't some of the later models have a feature that makes one of the cylenders cut out if it starts to overheat? He did say it started when he was sitting in traffic and after he started moving again it went back to normal right? I'm almost sure I read about something like that here somewhere.

harley does, don't think the dog does.

Maybe the new EFI bikes do but not sure

 

[Stinky7-11]

Maybe the new EFI bikes do but not sure

The new EFI Harley do this but it is at idle to save fuel not due to overheating.

 

[BigDogBro1]

My 07 EFI, the S&S ignition module interupts the ignition to throw cool fuel into the rear cylinder when it gets overheated, then shuts down the cylinder, then the engine if it continues to get extremely hot. The engine light should come on as well if it happens.

 

[RVH]

It was definately the plugs. Stopped by Advance and put new ones in the next day. The old rear cyl. plug had chunks of carbon built up. Plenty enough to keep the spark from arching like it should. Been running great ever since. Thanks for the responses

 

[Eric]

alright to clear up the HD cut out,, it only happens @ idel.. when it gets really hot.. the 09 will do it if you turn it on,, you can select it to operate or not... the 08 you couldnt select it only the dealer could turn it off or on..this feature it to coo, the engine,, it continues to run fuel through it to cool it off.. it cuts off the ignition,, but sounds funny,,, when only on 1 lung... I dont use mine I installed a oil temp gauge in the farring... & watch it,, but since I installed the pipes, air cleaner,& pcv ,, it runs so much cooler... almost like a evo..

 

[bigdogtech01]

Not being a smart ass but don't some of the later models have a feature that makes one of the cylenders cut out if it starts to overheat? He did say it started when he was sitting in traffic and after he started moving again it went back to normal right? I'm almost sure I read about something like that here somewhere.

Yes you probably have heard this stated before but it is only for the EFI ( Electronic Fuel Injection ) bikes. This is what one of the functions of the ECU ( Electronic Control unit ) performs if...
A) The bike has one of the sensors fail during the operation of the bike, the ECU will automatically go into default value for the failed sensor. it allows the bike to have enough power to run and get off the road, but not much power at all.
B) The ECU goes into "Skip Fire" mode. This feature happens when the motor reaches extreme high temperatures caused by very slow riding or sitting at idle for long periods of time. This is to prevent engine damage. The "Skip Fire", or "Limp in Mode" or cutting out on one cyl., what ever you want to call it, has 3 modes.
#1 Occurs at 350* F and the ignition is cut out 1 out of every 9 revolutions.
#2 Occurs at 365* F and the ignition is cut out 1 of every 7 revolutions.
If you still keep pushing it harder and harder and keep trying to ride the damn thing then you go into...
#3 This occurs at 375* F and the ignition is cut out 1 of every 5 revolutions.
Once the bike cools to less than 325* F, you can then start and run it down the road, just as long as you haven't F'd it all up Remember also, the motor will actually get hotter once you shut the motor off, so let the motor limp a bit before shutting down as long as it is on it's first Limp mode. The Limp mode actually helps to cool the motor by dumping raw fuel into the Cyl's at the ignition cutout points.
Hope this helps to answer any questions.

 

[Coolbreezin]

Hello all,
Just left Bikeweek 2012, and yes I was caught in traffic. I was idling waiting to cross street. When i took off, it went ok until I pulled the clutch in, then it went dead (no elec power at all). I turned key off then on and it started right up and went. Got to destination and shut her down. Next morning got up and rode away without a hitch. No problem like that before or since. I still have the factory UHC thingy if that matters. Heat related maybe?
Any insight as to the cause? Thank you.

Coolbreezin :flag:
Member of The Patriot Guard Riders.
Associated with The POW/MIA Foundation of Jacksonville.
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