small hole in vacuum piston which way do they point?

fixture · November 26th, 2009, 08:01 PM

I was checking the vacuum pistons for cracks and noticed that each one has another small hole on each one at the bottom by the jet needle hole. Does the second hole go closer to the butterfly or closer to the intake side?

I was looking at the manual and it says nothing about what side the hole goes too.

thanks for any help.

Jonathan

kkim · November 26th, 2009, 08:15 PM

the slides can only be installed into the carb in one direction. try it... they are not symmetrical.

fixture · November 26th, 2009, 08:25 PM

once again you are the bomb kkim. I got my new jets in yesterday and had the carbs apart to make sure everything is clean and clear. I will update my previous post about hanging idle when i complete the cleaning and adjustment.

Jonathan
aka- fixture

kkim · November 26th, 2009, 08:58 PM

cool... looking forward to good news.

dbotos · December 1st, 2009, 12:44 PM

Slide lift hole goes downstream of the needle in each carb.

November 26th, 2009, 08:01 PM	#1
fixture ninjette.org member Name: Jonathan Location: Northridge Join Date: Oct 2009 Motorcycle(s): 2003 Ninja 250 Posts: 17	small hole in vacuum piston which way do they point? I was checking the vacuum pistons for cracks and noticed that each one has another small hole on each one at the bottom by the jet needle hole. Does the second hole go closer to the butterfly or closer to the intake side? I was looking at the manual and it says nothing about what side the hole goes too. thanks for any help. Jonathan

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
vacuum point - installing scottoiler	BikersPOV	2008 - 2012 Ninja 250R Tech Talk	7	January 21st, 2014 03:13 PM
FREE right side clutch cover (with only 1 small hole in it)!	PartsNinja	Free stuff!	3	September 13th, 2013 12:20 PM
[motorcyclenews.com - news] - Small bikes for a small budget	Ninjette Newsbot	Motorcycling News	0	August 30th, 2013 09:40 AM
Blew a Hole in Muh Piston!	csmutty	1986 - 2007 Ninja 250R Tech Talk	19	July 8th, 2012 08:57 PM
[nytimes.com] - For Motorbike Dealer, There Are No Small Parts, Only Small Plans	Ninjette Newsbot	Motorcycling News	0	November 12th, 2008 11:58 PM

November 26th, 2009, 08:15 PM	#2
kkim Join Date: Nov 2008 Posts: Too much.	the slides can only be installed into the carb in one direction. try it... they are not symmetrical.

November 26th, 2009, 08:25 PM	#3
fixture ninjette.org member Name: Jonathan Location: Northridge Join Date: Oct 2009 Motorcycle(s): 2003 Ninja 250 Posts: 17	once again you are the bomb kkim. I got my new jets in yesterday and had the carbs apart to make sure everything is clean and clear. I will update my previous post about hanging idle when i complete the cleaning and adjustment. Jonathan aka- fixture

November 26th, 2009, 08:58 PM	#4
kkim Join Date: Nov 2008 Posts: Too much.	cool... looking forward to good news.

December 1st, 2009, 12:44 PM	#5
dbotos ninjette.org member Name: Dave Location: Southwest VA Join Date: Dec 2009 Motorcycle(s): 2001 EX250 Posts: 58	Slide lift hole goes downstream of the needle in each carb.