February 25th, 2019, 09:06 PM | #1 |
ninjette.org member
Name: David
Location: Mexico
Join Date: Sep 2017 Motorcycle(s): 2010 Kawasaki Ninja 250R, 99' Suzuki Katana 600 (RIP) Posts: 95
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Too much air to the carbs?
Hi guys, I previously commented that I had a problem with my ninja, since I removed a piece of paper that obstructed a hole in the snorkel, the motorcycle made many explosions and i need to open more the throtle, I thought that the spark plugs could be dirty with oil, I changed the spark plugs and I put a K & N filter thinking that could be that problem, I put the piece of paper back to the snorkel and the motorcycle accelerated better, as before removing the piece of paper, the mechanic said that maybe the carburetors are not calibrated
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February 25th, 2019, 09:30 PM | #2 |
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Name: Kevin
Location: Portland, OR
Join Date: Oct 2013 Motorcycle(s): Ninja 250R, Tiger 800 XRT Posts: 828
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Well many people here are more knowledge than I with respect to engines, but it sounds to me like you're running way too lean. Probably need to clean the carbs, unless they've been rejetted to be too lean.
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February 25th, 2019, 10:22 PM | #3 |
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Name: AKA JacRyann
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Yup, clogged carbs need complete removal, disassembly, and thorough cleaning.
Related threads: https://www.ninjette.org/forums/showthread.php?t=330960 https://www.ninjette.org/forums/showthread.php?t=322846 https://www.ninjette.org/forums/showthread.php?t=321223 https://www.ninjette.org/forums/showthread.php?t=317977 https://www.ninjette.org/forums/showthread.php?t=317810 https://www.ninjette.org/forums/showthread.php?t=316395 https://www.ninjette.org/forums/showthread.php?t=315193 https://www.ninjette.org/forums/showthread.php?t=280658 |
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March 1st, 2019, 08:38 AM | #4 |
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Name: Gordon
Location: new york
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@Darksik -
As you are running a factory airbox, its safe to say you've got optimum air flow, pressures, etc....as dictated by airbox capacity and configuration to work in conjunction with the supplied CV carbs. I'd tend to trust the capabilities of those Kawasaki design engineers, tasked with meeting emissions standards, performance, fuel consumption and within economical goals. I'll go on record stating they did a pretty darn good job. As Kawasaki sold a ton of 250's worldwide over a long production period....i'd further commend them with a corporate "mission accomplished!". That said, you HAVE received valid info above by members @Ralgha and @DannoXYZ on needing to fully review fuel delivery and carburetor function and cleanliness. As the airbox is (basically) a fixed entity...the fuel system (carbs) are, in fact, prone to negative influences.... restriction, maladjustment, weather, effects of poor fuel.... on and on. Get the paper out of the airbox, properly clean and adjust them carbs and RIDE!
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March 1st, 2019, 08:42 AM | #5 | |
ninjette.org member
Name: David
Location: Mexico
Join Date: Sep 2017 Motorcycle(s): 2010 Kawasaki Ninja 250R, 99' Suzuki Katana 600 (RIP) Posts: 95
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Quote:
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March 1st, 2019, 09:21 AM | #6 |
ninjette.org certified postwhore
Name: Gordon
Location: new york
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amongst many other tasks involved, yes.
Urge you to NOT experiment with synch, until the carbs are truly cleaned first. Don't do an "end run".
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March 1st, 2019, 01:05 PM | #7 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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March 2nd, 2019, 10:32 AM | #8 |
ninjette.org member
Name: David
Location: Mexico
Join Date: Sep 2017 Motorcycle(s): 2010 Kawasaki Ninja 250R, 99' Suzuki Katana 600 (RIP) Posts: 95
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The mechanic told me the problem was the diaphragms, he told me by telephone, the diaphragms were bad installed also one piece of the diaphragm was cut, i don't know how
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