Ys 160 Dz first start in the morning

[Earl Haury]

Assuming that you use a hand crank fueling pump, the easiest way to prime 
the YS160D is this:
1. Fill the tank.
2. Open the throttle.
3. Open any clamp / shut-off between the tank and engine.
4. Pinch the tank vent line closed.
5. Apply a little pressure to the fuel with the pump - takes very little - 
don't flood (likely with an electric pump).

Engine will start on first revolution.

What is going on is that the some of the fuel in the system vaporizes, on a 
"dry" attempt to start these vapors compress and the check valve on the 
injector doesn't open to pass the vapors, preventing the pump from 
developing the pressure delta necessary for fuel to flow from the tank. The 
priming trick fills the system with fuel, displacing the troublesome vapors.

Earl


----- Original Message ----- 
From: "Andre Bouchard" <akfai at gci.net>
To: <discussion at nsrca.org>
Sent: Sunday, July 24, 2005 12:46 PM
Subject: Re: Ys 160 Dz first start in the morning


> You must make sure to run fuel up to the injection nipple.  First fueling 
> of
> the day I take the line off the injector and make sure fuel reaches that
> point (open the throttle barrel some).  Starting will not be a problem if
> you do that--nearly impossible if you do not get fuel to that point.  In
> case it is inconvenient to remove the injector line in your set-up, 
> consider
> this: A friend put a tee in the line right before the injection nipple and
> ran it to a fuel dot on the side of the plane.  Same principle.  Works 
> well.
>
> Andre Bouchard
>
> ----- Original Message ----- 
> From: "Isaac Najary" <najary at netvision.net.il>
> To: <discussion at nsrca.org>
> Sent: Sunday, July 24, 2005 8:02 AM
> Subject: Ys 160 Dz first start in the morning
>
>
>>       Hi all
>>       Does anybody can tell me how can I start my Ys 160 DZ in one touch
> on
>> the first time of the flying day.
>>       I use the hemostat method on the supply fuel line.
>>       I found that it's better to dry the engine after the last flight so
> it
>> will not contain amount of oil that is hard to get rid of on the first
> start
>> of the next flying day. (The nitro and the methanol vaporize).
>>       I refuel the plane with the hemostat on.
>>       After the first start I can start the engine in one touch.
>>       Isaac Najary
>>
>>
>>
>>
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