Valve Adjustment then bike malfunction.

jpatt87 · April 26th, 2015, 02:03 PM

Ninja 250 2009

37,000 miles, 4th valve adjustment. Shoot for middle adjustment/ on the looser side. Spark plugs new, gapped and look normal.

Snorkel off, KN Pod.

2 washers under my needles, 108 main Jet I think. Carbs have been thoroughly cleaned, didnt need it but that was my first move. Fuel mix screws out 2.75 turns out. Synced to the best of my ability using a slack tube with atf.

Fuel always premium with some SeA Foam. There was maybe 1 shot glass full of water in the bottom of my tank that I syphoned out.

Ok, so I let my bike sit for 2 months before I did my 4th valve adjustment in December. Temps avg around 30 deg in the winter. Had to adjust 2 exhausts and 2 inlets, nothing out of the ordinary. Although I didn't break anything this time.

Replaced my battery for the first time as well.

Had the bike back together, started up great. Rided great for like 10-15 min and then starts to surge around 8k RPM. (Sometimes the TACH will redline all the way even though I know my RPMS are not that high) Then it will die at stops and wont start or stay running unless I keep it revving....... Now it wont start at all.

I havent adjusted the floats in my carb, so thats next on my list.

Other then adjusting the floats, does this sound like a problem anyone has had and fixed?

Can anyone explain the TACH going berzerk?

Thanks

Jeff

csmith12 · April 26th, 2015, 02:11 PM

First things first... check the connections to the battery. Many oddities can be associated with loose connections. I am feeling it's not that simple though, but I can hope for you.

jpatt87 · April 26th, 2015, 02:33 PM

That would be amazing. That is def first on the list. Im not near the bike until after suppah, but I am crossing my fingers until then.

fishdip · April 26th, 2015, 05:23 PM

Quote:

Originally Posted by jpatt87

Ninja 250 2009

37,000 miles, 4th valve adjustment. Shoot for middle adjustment/ on the looser side. Spark plugs new, gapped and look normal.

Snorkel off, KN Pod.

2 washers under my needles, 108 main Jet I think. Carbs have been thoroughly cleaned, didnt need it but that was my first move. Fuel mix screws out 2.75 turns out. Synced to the best of my ability using a slack tube with atf.

Fuel always premium with some SeA Foam. There was maybe 1 shot glass full of water in the bottom of my tank that I syphoned out.

Ok, so I let my bike sit for 2 months before I did my 4th valve adjustment in December. Temps avg around 30 deg in the winter. Had to adjust 2 exhausts and 2 inlets, nothing out of the ordinary. Although I didn't break anything this time.

Replaced my battery for the first time as well.

Had the bike back together, started up great. Rided great for like 10-15 min and then starts to surge around 8k RPM. (Sometimes the TACH will redline all the way even though I know my RPMS are not that high) Then it will die at stops and wont start or stay running unless I keep it revving....... Now it wont start at all.

I havent adjusted the floats in my carb, so thats next on my list.

Other then adjusting the floats, does this sound like a problem anyone has had and fixed?

Can anyone explain the TACH going berzerk?

Thanks

Jeff

Clogged jet. It will go to red line and only go 5mph

jpatt87 · April 26th, 2015, 07:32 PM

Fishdip, when its redlining in your scenario, the engine will actually be working that hard at 5mph?

Just for clarification, mine would be on the highway and lets say I downshift because traffic is slowing up, and when I accelerate to get back up to speed the tachometer goes crazy and the needle goes past the redline. The tach needle is buried and I am literally flying with airplanes.......OK, so I am not flying, but the needle does bury itself.

April 26th, 2015, 02:03 PM	#1
jpatt87 ninjette.org member Name: Jeff Location: Richmond Join Date: Jan 2012 Motorcycle(s): Ninja 250 09 Posts: 31	Valve Adjustment then bike malfunction. Ninja 250 2009 37,000 miles, 4th valve adjustment. Shoot for middle adjustment/ on the looser side. Spark plugs new, gapped and look normal. Snorkel off, KN Pod. 2 washers under my needles, 108 main Jet I think. Carbs have been thoroughly cleaned, didnt need it but that was my first move. Fuel mix screws out 2.75 turns out. Synced to the best of my ability using a slack tube with atf. Fuel always premium with some SeA Foam. There was maybe 1 shot glass full of water in the bottom of my tank that I syphoned out. Ok, so I let my bike sit for 2 months before I did my 4th valve adjustment in December. Temps avg around 30 deg in the winter. Had to adjust 2 exhausts and 2 inlets, nothing out of the ordinary. Although I didn't break anything this time. Replaced my battery for the first time as well. Had the bike back together, started up great. Rided great for like 10-15 min and then starts to surge around 8k RPM. (Sometimes the TACH will redline all the way even though I know my RPMS are not that high) Then it will die at stops and wont start or stay running unless I keep it revving....... Now it wont start at all. I havent adjusted the floats in my carb, so thats next on my list. Other then adjusting the floats, does this sound like a problem anyone has had and fixed? Can anyone explain the TACH going berzerk? Thanks Jeff

April 26th, 2015, 02:11 PM	#2
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	First things first... check the connections to the battery. Many oddities can be associated with loose connections. I am feeling it's not that simple though, but I can hope for you. __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School
	1 out of 1 members found this post helpful.

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April 26th, 2015, 02:33 PM	#3
jpatt87 ninjette.org member Name: Jeff Location: Richmond Join Date: Jan 2012 Motorcycle(s): Ninja 250 09 Posts: 31	That would be amazing. That is def first on the list. Im not near the bike until after suppah, but I am crossing my fingers until then.

April 26th, 2015, 07:32 PM	#5
jpatt87 ninjette.org member Name: Jeff Location: Richmond Join Date: Jan 2012 Motorcycle(s): Ninja 250 09 Posts: 31	Fishdip, when its redlining in your scenario, the engine will actually be working that hard at 5mph? Just for clarification, mine would be on the highway and lets say I downshift because traffic is slowing up, and when I accelerate to get back up to speed the tachometer goes crazy and the needle goes past the redline. The tach needle is buried and I am literally flying with airplanes.......OK, so I am not flying, but the needle does bury itself.