Weird Cold Starting Idle

ajcadoo · March 5th, 2012, 08:22 PM

So when I warm up my bike in neutral, I apply a little choke to assist in the warming up of the bike. However, when I crank the bars to the left, the RPMs increase about 1000. If I straighten the bars, the idle goes back down 1000RPM. When I do it to the right, the RPMs stay constant and no change happens.

I dont know why the RPMs would increase when I crank the bars to the left. Any ideas?

Alex · March 5th, 2012, 08:33 PM

Turning the bars is tugging either the throttle cable or the choke cable. Neither are a good thing, but the choke cable probably wouldn't matter as much compared to a misrouted throttle. Readjust them both until you can move the bars at full lock in either direction without the idle changing at all.

EthioKnight · March 5th, 2012, 08:34 PM

lol...I have the EXACT same condition. I have made a mental note to check the choke cable for any slack/deformity, the next time I removed the tank, which should be this week (shimming). It doesn't bother me that much though.
On a related note though...I thought I had convinced you to NOT warmup the engine @ idle, me very disappointed in you boy

ajcadoo · March 5th, 2012, 08:37 PM

Ok sweet, I will definitely check it out. I didnt know if maybe my fuel line was getting pinched or something weird.

Quote:

Originally Posted by EthioKnight

On a related note though...I thought I had convinced you to NOT warmup the engine @ idle, me very disappointed in you boy

haha, I dont remember anyone saying that but I have read that idling in neutral with the choke for a minute or two is good to get the oil flowing throughout the entire engine. I have been doing this for only cold starts. What is the reason for not doing this?

EthioKnight · March 5th, 2012, 08:40 PM

Here you go bud...
http://faq.ninja250.org/wiki/Warming_up_your_engine

Just feels like Dejavu...maybe it wasn't you that I advised after all, my apologies

ajcadoo · March 5th, 2012, 08:43 PM

Quote:

Originally Posted by EthioKnight

Here you go bud...
http://faq.ninja250.org/wiki/Warming_up_your_engine

Just feels like Dejavu...maybe it wasn't you that I advised after all, my apologies

Using the choke puts the engine under a load right? The main point of that answer is that the bike warms up when the engine is under load. I warm it up with the choke engaged for a minute and then drive off. I do not idle (without choke) to warm up the bike.

EthioKnight · March 5th, 2012, 08:57 PM

No, you'd have to be moving for the engine to be under load. The choke just enrichens the mixture (gas/air) in the carbs for easy starting during cold temps.

ajcadoo · March 5th, 2012, 08:59 PM

kk sweet, thanks for the info! I will be definitely doing this from now on.

EthioKnight · March 5th, 2012, 09:02 PM

gilmorec61 · March 6th, 2012, 08:54 AM

Same thing happened to mine but it was when i turned it all the way right. When i got around to shimming my needles and stripped her naked, i located the problem, and just rerouted the cables so i could completly turn the wheel both ways without it doing what you said. No biggie!

March 5th, 2012, 08:22 PM	#1
ajcadoo Towster ['__'`,-, Name: Josh Location: San Diego, CA Join Date: Jan 2012 Motorcycle(s): 2010 Green Ninja 250 SE Posts: 379	Weird Cold Starting Idle So when I warm up my bike in neutral, I apply a little choke to assist in the warming up of the bike. However, when I crank the bars to the left, the RPMs increase about 1000. If I straighten the bars, the idle goes back down 1000RPM. When I do it to the right, the RPMs stay constant and no change happens. I dont know why the RPMs would increase when I crank the bars to the left. Any ideas?

March 5th, 2012, 08:33 PM	#2
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	Turning the bars is tugging either the throttle cable or the choke cable. Neither are a good thing, but the choke cable probably wouldn't matter as much compared to a misrouted throttle. Readjust them both until you can move the bars at full lock in either direction without the idle changing at all. __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)

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March 5th, 2012, 08:34 PM	#3
EthioKnight Super Noob Name: Alex Location: Mobile, AL Join Date: Oct 2011 Motorcycle(s): '09 Kawasaki Ninja 250R, '84 Honda Spree 50cc Posts: A lot.	lol...I have the EXACT same condition. I have made a mental note to check the choke cable for any slack/deformity, the next time I removed the tank, which should be this week (shimming). It doesn't bother me that much though. On a related note though...I thought I had convinced you to NOT warmup the engine @ idle, me very disappointed in you boy

March 5th, 2012, 08:40 PM	#5
EthioKnight Super Noob Name: Alex Location: Mobile, AL Join Date: Oct 2011 Motorcycle(s): '09 Kawasaki Ninja 250R, '84 Honda Spree 50cc Posts: A lot.	Here you go bud... http://faq.ninja250.org/wiki/Warming_up_your_engine Just feels like Dejavu...maybe it wasn't you that I advised after all, my apologies

March 5th, 2012, 08:57 PM	#7
EthioKnight Super Noob Name: Alex Location: Mobile, AL Join Date: Oct 2011 Motorcycle(s): '09 Kawasaki Ninja 250R, '84 Honda Spree 50cc Posts: A lot.	No, you'd have to be moving for the engine to be under load. The choke just enrichens the mixture (gas/air) in the carbs for easy starting during cold temps.

March 5th, 2012, 08:59 PM	#8
ajcadoo Towster ['__'`,-, Name: Josh Location: San Diego, CA Join Date: Jan 2012 Motorcycle(s): 2010 Green Ninja 250 SE Posts: 379	kk sweet, thanks for the info! I will be definitely doing this from now on.

March 5th, 2012, 09:02 PM	#9
EthioKnight Super Noob Name: Alex Location: Mobile, AL Join Date: Oct 2011 Motorcycle(s): '09 Kawasaki Ninja 250R, '84 Honda Spree 50cc Posts: A lot.

March 6th, 2012, 08:54 AM	#10
gilmorec61 ninjette.org guru Name: Chris Location: Newnan, G.A. Join Date: Jan 2012 Motorcycle(s): 2008 Kawasaki Ninja 250R Posts: 347	Same thing happened to mine but it was when i turned it all the way right. When i got around to shimming my needles and stripped her naked, i located the problem, and just rerouted the cables so i could completly turn the wheel both ways without it doing what you said. No biggie!