Help needed, newbie. [Video Attached]

DKoumane · September 20th, 2016, 08:52 PM

Hi everyone. I just got my motorcycle permit and am new to bikes. My friend had his old 07 Ninja 250 he doesn't ride anymore and gave it to me for free. The bike was sitting for about a year, and reading around, I did basic tasks such as:

Drained the gas tank and added new gas,
Checked to see if the spark plugs gave a charge. (They did)
Charged the battery.
Checked oil. (Looks good)

So, the bike turns on, but here is my issue:

The bike will ONLY turn on with the choke. It will not idle without the choke, and will die when the choke is taken off. Also, whenever I give the bike any gas, the RPM shoots down, and will eventually die.

I took out the carbs and saw that it was missing one idle mixture screw. I ordered a replacement and tried to put it in today to see if that was the issue. Still same problem. Here is a video of what is going on.

I have taken out the carbs again and am just waiting to see what everyone suggests.. Thank you!

Sorry for vertical recording. Wasn't thinking about it at the time.

https://www.youtube.com/watch?v=wv4c...ature=youtu.be

Link to original page on YouTube.

Tango89er · September 20th, 2016, 10:35 PM

At the very least, your idle appears to be set way too high. Mine idles nicely at 1500RPM, but I've seen some set theirs as low as 1100/1200. Yours seems to be at about 4000RPM?

Solution: Idle adjust (the little knob under the left side of the carbies) and adjusting the throttle cables

DKoumane · September 20th, 2016, 10:37 PM

Quote:

Originally Posted by Tango89er

At the very least, your idle appears to be set way too high. Mine idles nicely at 1500RPM, but I've seen some set theirs as low as 1100/1200. Yours seems to be at about 4000RPM?

Solution: Idle adjust (the little knob under the left side of the carbies) and adjusting the throttle cables

Thank you for the advice! I tried that earlier as well.. The black knob.. It changed my idle RMP but still did not help with the main issue

Tango89er · September 20th, 2016, 10:41 PM

Quote:

Originally Posted by DKoumane

Thank you for the advice! I tried that earlier as well.. The black knob.. It changed my idle RMP but still did not help with the main issue

Then I'm at a loss. I was suffering the same problem unless I let the bike warm up a bit at idle, but it went away when I cleaned the carbs (but other problems showed themselves instead)

Ghostt · September 20th, 2016, 10:43 PM

If it won't run without using the choke, then the carburetors need to be serviced, I suggest PM @ducatiman for all your carburetor needs, I strongly suggest you let me service them, it's money well spent, and time and aggravation saved.

DKoumane · September 20th, 2016, 10:55 PM

Quote:

Originally Posted by Ghostt

If it won't run without using the choke, then the carburetors need to be serviced, I suggest PM @ducatiman for all your carburetor needs, I strongly suggest you let me service them, it's money well spent, and time and aggravation saved.

Currently I'm taking apart all the jets and cleaning them through.. I hope I'm on the right path. I was trying to shortcut and save money before getting an actual service.

VaFish · September 21st, 2016, 04:35 AM

Quote:

Originally Posted by Ghostt

If it won't run without using the choke, then the carburetors need to be serviced, I suggest PM @ducatiman for all your carburetor needs, I strongly suggest you let me service them, it's money well spent, and time and aggravation saved.

Ducati man or you should service them? or are you one in the same?

adouglas · September 21st, 2016, 05:43 AM

Idle should not be set with the choke on FYI.

It's pretty clear to me that a year of sitting has allowed the fuel to gunk up and a thorough cleaning is in order (not just the jets). There are passages in there that could be blocked.

If it runs with the choke on, that means not enough fuel is getting into the carb to run with it off -- the mixture is too lean. But there is some fuel getting through, so it runs okay when you richen the mixture by applying the choke.

Therefore a blocked jet or passage somewhere.

If it were me, I'd remove the carbs, disassemble them, and do a thorough cleaning/soaking.

This cutaway is not actually of a Ninjette carb, but it is close. This should give you an idea of where blockage might be happening.

ducatiman · September 21st, 2016, 05:59 AM

Quote:

Originally Posted by VaFish

Ducati man or you should service them? or are you one in the same?

huh? no, not one in same.

Bike sitting for a year...clogged pilot passages correctly diagnosed, a full service is called for....as fouled fuel will not restrict itself to *just* the pilot jets.

If you concentrate on jets alone, its likely the classic "redo" will be in your future...though you may get lucky. But once idling is corrected other running issues may become evident (through other circuits, adjustments and calibrations).

Try it and see for certain.

DKoumane · September 21st, 2016, 11:59 AM

Hey everyone thanks for the replies. Last night I took apart all the pilots and cleaned them. They were clogged to the point where I couldn't see through them. I just got out of class right now and I'm going to put the carbs back in and see what happens. Will update when done.

Triple Jim · September 21st, 2016, 12:13 PM

Just curious... there are only two pilot jets, one per carb. Do you mean you cleaned all the jets, etc.?

DKoumane · September 21st, 2016, 01:40 PM

Quote:

Originally Posted by Triple Jim

Just curious... there are only two pilot jets, one per carb. Do you mean you cleaned all the jets, etc.?

Oops yeah! Sorry. I took out all the Jets and cleaned them. I'm putting it all back together right now as we speak. Will post update

jkv45 · September 21st, 2016, 01:51 PM

Make sure you read through most of this section before you install the carbs - http://faq.ninja250.org/wiki/How_do_...n_the_carbs%3F.

There are a few details that are easy to miss unless you are familiar with these carbs.

DKoumane · September 21st, 2016, 03:46 PM

Hello all! Good news. After cleaning all the jets the bike now runs! I did have to directly pour gas into the tube leading to the carbs.. But I assume that is because I drained all the gas when cleaning the carbs out.

Just took the bike for a test run around the neighborhood and everything checks out. Now I'm at the DMV getting tags. Thank you all for the help!

Triple Jim · September 21st, 2016, 03:55 PM

You could probably also have sucked on the petcock vacuum line to prime the carbs.

Tango89er · September 21st, 2016, 03:55 PM

Quote:

Originally Posted by DKoumane

Just took the bike for a test run around the neighborhood and everything checks out. Now I'm at the DMV getting tags. Thank you all for the help!

Congrats and good luck!

Triple Jim · September 21st, 2016, 04:01 PM

Yes, have fun!

Ghostt · September 21st, 2016, 04:55 PM

Quote:

Originally Posted by VaFish

Ducati man or you should service them? or are you one in the same?

It's a typo I ment him, not me.

Ducatiman has this market covered extremely well, so no need for me.

September 20th, 2016, 10:43 PM	#5
Ghostt in your machine Name: Scott Location: Summer Shade, Ky. Join Date: Oct 2014 Motorcycle(s): 98 Ninja 250/F12 aka ZX-2R "SERENITY", 91 Ninja 500/A5 aka ZX-5R "Phoenix", 84 Honda GL1200A "SIREN" Posts: A lot. Blog Entries: 25 MOTM - Jun '17, May '16, Mar '15	If it won't run without using the choke, then the carburetors need to be serviced, I suggest PM @ducatiman for all your carburetor needs, I strongly suggest you let me service them, it's money well spent, and time and aggravation saved. __________________________________________________ *violente et ignorantia* ZX-2R BLOG *Twitter and Instagram = Ghostt_Scott* *I'm not here to change your mind, just to inform.*

September 21st, 2016, 05:43 AM	#8
adouglas Cat herder Name: Gort Location: A secret lair which, being secret, has an undisclosed location Join Date: May 2009 Motorcycle(s): Aprilia RS660 Posts: A lot. Blog Entries: 6 MOTM - Jul '18, Nov '16, Aug '14, May '13	Idle should not be set with the choke on FYI. It's pretty clear to me that a year of sitting has allowed the fuel to gunk up and a thorough cleaning is in order (not just the jets). There are passages in there that could be blocked. If it runs with the choke on, that means not enough fuel is getting into the carb to run with it off -- the mixture is too lean. But there is some fuel getting through, so it runs okay when you richen the mixture by applying the choke. Therefore a blocked jet or passage somewhere. If it were me, I'd remove the carbs, disassemble them, and do a thorough cleaning/soaking. This cutaway is not actually of a Ninjette carb, but it is close. This should give you an idea of where blockage might be happening. __________________________________________________ I am NOT an adrenaline junkie, I'm a skill junkie. - csmith12 Nam et ipsa scientia potestas est. Heri historia. Cras mysterium. Hodie donum est. Carpe diem.

September 21st, 2016, 03:55 PM	#15
Triple Jim Guy Who Enjoys Riding Name: Jim Location: North Carolina Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot. MOTM - Oct '18, Aug '17, Aug '16	You could probably also have sucked on the petcock vacuum line to prime the carbs.
	1 out of 1 members found this post helpful.

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September 20th, 2016, 10:35 PM	#2
Tango89er ninjette.org member Name: Pete Location: Perth, Australia Join Date: Sep 2016 Motorcycle(s): '89 Ninja 250 (#3650) Posts: 78	At the very least, your idle appears to be set way too high. Mine idles nicely at 1500RPM, but I've seen some set theirs as low as 1100/1200. Yours seems to be at about 4000RPM? Solution: Idle adjust (the little knob under the left side of the carbies) and adjusting the throttle cables

September 21st, 2016, 11:59 AM	#10
DKoumane ninjette.org member Name: David Location: Bakersfield Join Date: Sep 2016 Motorcycle(s): 07 Ninja 250 Posts: 12	Hey everyone thanks for the replies. Last night I took apart all the pilots and cleaned them. They were clogged to the point where I couldn't see through them. I just got out of class right now and I'm going to put the carbs back in and see what happens. Will update when done.

September 21st, 2016, 12:13 PM	#11
Triple Jim Guy Who Enjoys Riding Name: Jim Location: North Carolina Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot. MOTM - Oct '18, Aug '17, Aug '16	Just curious... there are only two pilot jets, one per carb. Do you mean you cleaned all the jets, etc.?

September 21st, 2016, 01:51 PM	#13
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	Make sure you read through most of this section before you install the carbs - http://faq.ninja250.org/wiki/How_do_...n_the_carbs%3F. There are a few details that are easy to miss unless you are familiar with these carbs.

September 21st, 2016, 03:46 PM	#14
DKoumane ninjette.org member Name: David Location: Bakersfield Join Date: Sep 2016 Motorcycle(s): 07 Ninja 250 Posts: 12	Hello all! Good news. After cleaning all the jets the bike now runs! I did have to directly pour gas into the tube leading to the carbs.. But I assume that is because I drained all the gas when cleaning the carbs out. Just took the bike for a test run around the neighborhood and everything checks out. Now I'm at the DMV getting tags. Thank you all for the help!

September 21st, 2016, 04:01 PM	#17
Triple Jim Guy Who Enjoys Riding Name: Jim Location: North Carolina Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot. MOTM - Oct '18, Aug '17, Aug '16	Yes, have fun!