Weird :/

reabo · April 3rd, 2013, 04:22 AM

My ninja 250 08 has been a bit strange the last few days. I'd ride of to work but when i accelerate it run find, then just loses power. Its only at the start of the journey though.

Its not pulling and grinds to 20mph :/ Then if i stop and take off again its fine the rest of the trip.

Is this air filter related? Anyone got an suggestions? Ive changed nothing in the way ive been riding since i bought it. But not its doing this. Hopefully its not a big problem

Joshorilla · April 3rd, 2013, 04:45 AM

Quote:

Originally Posted by reabo

My ninja 250 08 has been a bit strange the last few days. I'd ride of to work but when i accelerate it run find, then just loses power. Its only at the start of the journey though.

Its not pulling and grinds to 20mph :/ Then if i stop and take off again its fine the rest of the trip.

Is this air filter related? Anyone got an suggestions? Ive changed nothing in the way ive been riding since i bought it. But not its doing this. Hopefully its not a big problem

What year is your ninja? This could be the ECU for the fuel injection playing funny due to the cold weather, how long have you noticed this? I find my ninja has low power until the temperature needle moves off the bar and up a little bit, generally ten minutes and it's great.

CALLING ALL BRITISH NINJETTERS! ASSEMBLE! @Whiskey & @akima

You guys noticed this?

reabo · April 3rd, 2013, 04:47 AM

Quote:

Originally Posted by Joshorilla

What year is your ninja? This could be the ECU for the fuel injection playing funny due to the cold weather, how long have you noticed this? I find my ninja has low power until the temperature needle moves off the bar and up a little bit, generally ten minutes and it's great.

CALLING ALL BRITISH NINJETTERS! ASSEMBLE! @Whiskey & @akima

You guys noticed this?

Its an 08. I was thinking it was the cold, but its literally only started doing this. Never had this problem before. It is also alot warmer today! I though if it works fine then its defo the cold, but its done it again today.

Thought id ask on the forums as your all pretty good with hitting the nail on the head.

Joshorilla · April 3rd, 2013, 05:30 AM

My guess would be faulty lambda sensor

reabo · April 3rd, 2013, 05:33 AM

Quote:

Originally Posted by Joshorilla

My guess would be faulty lambda sensor

Is there anyway to test for it? Also is it an expensive fix?

Joshorilla · April 3rd, 2013, 08:43 AM

Quote:

Originally Posted by reabo

Is there anyway to test for it? Also is it an expensive fix?

Well, what happens with the fuel injection system is it has a "feedback" system where it has a set fuel to air ratio of which it uses, but it also has an o2 sensor or lambda sensor as we call them in the uk due to our propensity for using the correct words. This sensor will see how much residual air is in the exhaust, if too much air it will add a little fuel, if too little air it will cut fuel, if it stops working or starts failing the ecu will sense something is wrong and go into "safe mode" where it will cut the power or it will just perform like ass when it's cold as they need to heat up to work properly.

The sensor itself will cost more than a tenner, maybe about twenty quid and will require a bit of work to install, I wouldn't know how to test one.

Does it idle badly?

Is it a bit choppy?

It won't hurt to check your air filter and won't take five minutes.

reabo · April 3rd, 2013, 08:49 AM

Quote:

Originally Posted by Joshorilla

Well, what happens with the fuel injection system is it has a "feedback" system where it has a set fuel to air ratio of which it uses, but it also has an o2 sensor or lambda sensor as we call them in the uk due to our propensity for using the correct words. This sensor will see how much residual air is in the exhaust, if too much air it will add a little fuel, if too little air it will cut fuel, if it stops working or starts failing the ecu will sense something is wrong and go into "safe mode" where it will cut the power or it will just perform like ass when it's cold as they need to heat up to work properly.

The sensor itself will cost more than a tenner, maybe about twenty quid and will require a bit of work to install, I wouldn't know how to test one.

Does it idle badly?

Is it a bit choppy?

It won't hurt to check your air filter and won't take five minutes.

It idles at 2 when i start it up, its normal though, always done that, then after about 2 mins when its warm its at 1. It never choppy untill these last two days when it just loses power. But then i stop. I rev a bit then start off again and runs as it should.

Hmm. Does anyone else have any sugguestion as to what it may be? I might just bring it to a garage next week if it continues.

Would the air filter produce that kind of problem? I know next to nothing about bike btw lol. Just what ive read.

If it is the o2 sensor. Wouldnt it be doing it all the way through my jounery and not just at the start?

Joshorilla · April 3rd, 2013, 09:04 AM

Your bike should be idling at 1.8, yours is way too low, have you ever had it serviced according to the book? The mechanic would have put that right.

Edit: adjust the idle with the little black plastic nubbin on the end of that cable sticking out on the left side of your fairings.

o2 sensors work best when fully warmed up and if it is going faulty it would be more prevelant at the start.

Edit: Also, have you got a slip on exhaust or anything?

akima · April 3rd, 2013, 11:39 AM

Is the FI warning light comming on? If so take it to your nearest Kawi service centre and ask them to read the error code. The bike will then tell them what`s playing up.

Joshorilla`s "safe mode" idea sounds very reasonable to me. My mechanic told me that if the ECU thinks something is really wrong or if it`s gettting problems with one of it`s sensors, it will enter this "safe mode" to protect the bike from damage.

Whiskey · April 3rd, 2013, 04:34 PM

Quote:

Originally Posted by Joshorilla

What year is your ninja? This could be the ECU for the fuel injection playing funny due to the cold weather, how long have you noticed this? I find my ninja has low power until the temperature needle moves off the bar and up a little bit, generally ten minutes and it's great.

CALLING ALL BRITISH NINJETTERS! ASSEMBLE! @Whiskey & @akima

You guys noticed this?

I've an 08, think @akima is running an 09 SE

akima · April 4th, 2013, 12:11 AM

Quote:

Originally Posted by whiskey

i've an 08, think @akima is running an 09 se

2011 se

reabo · April 4th, 2013, 05:33 AM

Quote:

Originally Posted by Joshorilla

Your bike should be idling at 1.8, yours is way too low, have you ever had it serviced according to the book? The mechanic would have put that right.

Edit: adjust the idle with the little black plastic nubbin on the end of that cable sticking out on the left side of your fairings.

o2 sensors work best when fully warmed up and if it is going faulty it would be more prevelant at the start.

Edit: Also, have you got a slip on exhaust or anything?

I had it done a year ago. But not since. They didnt say anything about the idling. Could you upload a photo of the nubbin im looking for? I'll have a look when i get home

Nope, no slip the bike is all stock.

allanoue · April 4th, 2013, 05:50 AM

Quote:

Originally Posted by akima

Link to original page on YouTube.

reabo · April 4th, 2013, 07:53 AM

ty, i'll adjust later

reabo · April 12th, 2013, 03:37 AM

Ok adjusted the idle. That sorted now.

I rang up a a few garages and one suggested the breather on the tank might be blocked, so water is getting in? The engine goes funny until the water is out of the tank.

Can I ask where I can rfind this breather? And does it sound like it could be the problem?

TheDementedDrummer · April 12th, 2013, 03:42 AM

I don't think it's the O2 sensor, i ran my bike on a full exhaust, that didn't have the bung for the sensor for a while.
it didn't make as much power, but it still ran fine.
it's probably the air filter or something

reabo · April 12th, 2013, 03:55 AM

The garage said it should be the o2 senser either. As if it was it would be riding crap for the rest of the jounery.

I'll order a new air filer and see if that changes anything.

April 3rd, 2013, 04:22 AM	#1
reabo ninjette.org member Name: Max Location: UK Join Date: Jan 2012 Motorcycle(s): Kawasaki Ninja EX250 K8F Posts: 89	Weird :/ My ninja 250 08 has been a bit strange the last few days. I'd ride of to work but when i accelerate it run find, then just loses power. Its only at the start of the journey though. Its not pulling and grinds to 20mph :/ Then if i stop and take off again its fine the rest of the trip. Is this air filter related? Anyone got an suggestions? Ive changed nothing in the way ive been riding since i bought it. But not its doing this. Hopefully its not a big problem

April 12th, 2013, 03:42 AM	#16
TheDementedDrummer Present. Somewhat. Name: Neel Location: Bangalore, India Join Date: Sep 2012 Motorcycle(s): 2012 KTM Duke 200, 2011 Ninja 250r, 2011 Ducati Monster 796, 2014 Kawasaki ZX10r Posts: 227	I don't think it's the O2 sensor, i ran my bike on a full exhaust, that didn't have the bung for the sensor for a while. it didn't make as much power, but it still ran fine. it's probably the air filter or something __________________________________________________ Highest speed on two wheels- 230 km/h Beat that.

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April 3rd, 2013, 05:30 AM	#4
Joshorilla Bass Master General Join Date: Aug 2012 Posts: A lot. Blog Entries: 24	My guess would be faulty lambda sensor

April 3rd, 2013, 09:04 AM	#8
Joshorilla Bass Master General Join Date: Aug 2012 Posts: A lot. Blog Entries: 24	Your bike should be idling at 1.8, yours is way too low, have you ever had it serviced according to the book? The mechanic would have put that right. Edit: adjust the idle with the little black plastic nubbin on the end of that cable sticking out on the left side of your fairings. o2 sensors work best when fully warmed up and if it is going faulty it would be more prevelant at the start. Edit: Also, have you got a slip on exhaust or anything?

April 3rd, 2013, 11:39 AM	#9
akima Nooblet Name: Akima Location: England Join Date: Jul 2011 Motorcycle(s): 2011 Ninja 250R FI Posts: A lot. Blog Entries: 5 MOTM - Oct '13	Is the FI warning light comming on? If so take it to your nearest Kawi service centre and ask them to read the error code. The bike will then tell them what`s playing up. Joshorilla`s "safe mode" idea sounds very reasonable to me. My mechanic told me that if the ECU thinks something is really wrong or if it`s gettting problems with one of it`s sensors, it will enter this "safe mode" to protect the bike from damage.

April 4th, 2013, 07:53 AM	#14
reabo ninjette.org member Name: Max Location: UK Join Date: Jan 2012 Motorcycle(s): Kawasaki Ninja EX250 K8F Posts: 89	ty, i'll adjust later

April 12th, 2013, 03:37 AM	#15
reabo ninjette.org member Name: Max Location: UK Join Date: Jan 2012 Motorcycle(s): Kawasaki Ninja EX250 K8F Posts: 89	Ok adjusted the idle. That sorted now. I rang up a a few garages and one suggested the breather on the tank might be blocked, so water is getting in? The engine goes funny until the water is out of the tank. Can I ask where I can rfind this breather? And does it sound like it could be the problem?

April 12th, 2013, 03:55 AM	#17
reabo ninjette.org member Name: Max Location: UK Join Date: Jan 2012 Motorcycle(s): Kawasaki Ninja EX250 K8F Posts: 89	The garage said it should be the o2 senser either. As if it was it would be riding crap for the rest of the jounery. I'll order a new air filer and see if that changes anything.