33-35mm Carb. YAMAHA BANSHEE TWO STROKE LEAKDOWN TEST KIT -- EAST COAST BANSHEE

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$34.99
Non-Domestic Product
No
Mounting Style
Bolt-On
Fits
Yamaha Banshee - All Years
Warranty
No Warranty
Custom Bundle
Yes
Manufacturer Part Number
Two Carb 33 - 35mm
Compatible Model
Yamaha Banshee
Modified Item
No
Placement on Vehicle
Engine
Brand
East Coast Banshee
Compatible Make
Yamaha Banshee
Country/Region of Manufacture
United States
Compatible Year
1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Performance Part
Yes
Part Type
Specialty Tool - Two Stroke Leak Down Test Kit
condition
New


*** THIS KIT COMES WITH "FERNCO" RUBBER BLOCK-OFF CAPS TO SEAL THE EXHAUST PORTS FOR BANSHEE MOTORS! YOU WILL KNOW WHETHER YOU HAVE THEM IF THEY HAVE "FERNCO" EMBOSSED ON THE OUTSIDE OF THE CAP (SEE PHOTO OF BANSHEE EXHAUST PORTS). THEY WORK GREAT AND HAVE BEEN MADE IN THE USA FOR 60+ YEARS. THERE IS A HUGE DIFFERENCE BETWEEN MINE AND COMPETITORS. THEY ARE MADE BY "BLUEFIN". YOU CAN DO RESEARCH SEE WHERE THEY ARE MADE AND THE PRICE DIFFERENCE. THEY LEAK AIR ON BANSHEE EXHAUST PORTS. THEY DO NOT WORK FOR THE YZ250. THE RUBBER IS TOO HARD TO STRETCH OVER THE 250'S EXHAUST PORT. I HAVE USED THEM GUYS AND DO NOT LIKE THEM!

*** NONE OF MY COMPETITOR'S INTAKE ADAPTERS ARE TEFLON TAPED. THE ADAPTORS WILL LEAK.

*** NOT ALL OF THEIR KITS THAT SAY BANSHEE/BLASTER INCLUDE THE RUBBER EXPANSION PLUG NEEDED TO SEAL THE YAMAHA BLASTER’S EXHAUST PORT, SO YOU WILL NOT BE ABLE TO LEAKDOWN A YAMAHA BLASTER (PARTS MISSING).


Yamaha Banshee / LeakDown Test Kit

Fits Aftermarket Carburetor Sizes 33mm-35mm

Additionally This Kit Works For (2 Into 1 Intakes) For Banshees!


LEAKDOWN KIT IS A GENUINE PROVEN PARTS KIT THAT WORKS!

EASY ORDER PROCESS, TRACKING PROVIDED

*** 10:45 a.m. Eastern Standard Time, cut off for same-day shipping, is still in effect but not guaranteed. I have given myself one business day handling time but usually get orders out same day if rules are followed.


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Leak-Down kit comes complete with everything you need other than a bicycle pump (air source). PVC Male threaded adapter comes pre-wrapped with Teflon tape.

Test your engine to see if it will hold 6 psi of air pressure for 6 minutes:

Do not add air to the engine using an air compressor since the pressure rises quickly, and you risk blowing your crankshaft seals. Even if your air compressor has a pressure regulator, you are hard-pressed to regulate air pressure under 20 psi.

Using a bicycle hand pump, stop adding air when your gauge reads 6 psi. Optimally, after 6 minutes, the gauge will still read 6 psi.

If the air pressure gauge DOES NOT hold 6 psi:

Fill a spray bottle with water. Add five or six pumps of dishwashing soap (For example, Dawn). Gently mix soap with water (Don't shake). Liberally spray your entire engine with the soapy solution. Next, pump 6 psi air pressure into your motor. You are looking for bubbles, thus showing you where your air leaks are (see photos). The slower your engine loses air pressure, the harder it will be to find your air leak or leaks. If you see no visible signs of air leakage, but your gauge continues to lose air pressure, take your clutch cover off and check for leaks around the primary gear and keyway. If there are still no leaks, then pull your stator cover and flywheel to check for leaks. If you still cannot locate any visible signs of air leakage, you will need to replace the crankshaft seals in your motor. Then, perform the Leak-Down test again.


IS A LEAK-DOWN TEST ON MY TWO-STROKE ENGINE REALLY NECESSARY? - YES, IT IS!

You will notice a surprising performance increase fixing even the smallest of air leaks making this test exciting to do and worth your effort. In addition, you will benefit from Snappier, Crisp throttle response, and more Power! 
Trying to tune your engine with air leaks can be very frustrating, especially when you do not know you have air leaks. This must-have tool should be used anytime you notice an unexpected change in engine performance—a real game changer.


All air required for your engine to run correctly must be metered through the carburetor or air filter. There is a high probability you have air leaks if you experience any of these symptoms, Hard to start (tons of kicking), no start, power loss, high-revving, hanging idle, no idle, running hot, running poorly, running erratically, or unreliably. Air leaks occur at random. If not taken care of, they get worse. I have leaked down hundreds of two-stroke engines, and most of them have some degree of air leakage. So the first thing to do, Leak test your engine and fix your air leaks! Then you can tune and dial in your setup.

Air leaks will cause your engine to run lean, generating excessive heat and detonation. Detonation will destroy your engine. If you know your motor is not running right, Leak it down immediately to eliminate air leaks as the issue. Catastrophic engine failure happens fast. Cheap insurance and peace of mind are great, knowing your two-stroke engine has no air leaks. The alternative will be frustrating, expensive, and time-consuming to recover from.


Videos - These are high definition and informative. If using the mobile app? (Cell Phone) Copy the link into your browser.

First Video - LeakDown test procedure on my Yamaha Banshee.

Second Video - Testing Banshee after Leaking it down in a Motel parking lot. I replaced the VFORCE4 intake gasket on the passenger side carb.

YAMAHA BANSHEE - LEAKDOWN TEST PROCEDURE

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Using the mobile app? Copy this link into your browser:

YAMAHA BANSHEE - QUICK BLAST AFTER LEAKDOWN TEST

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Using the mobile app? Copy this link into your browser: