YS 53 FZ problem
12-28-2005, 11:09 AM
#1
Thread Starter
YS 53 FZ problem
Hi there.
I have a YS 53FZ and also a great problem when running!!!From idle when i go to full throtle the engine stays on a very low rpm and slowly shuts off!???I checked for leaking pressure,wrong connections and diaphragm position!Also when i puss the diaphragm the rpm changes!
What is going wrong?
Does anyone knows sth?
I uploaded the photo of my engine,installed in a Greatplanes Extra.
I have a YS 53FZ and also a great problem when running!!!From idle when i go to full throtle the engine stays on a very low rpm and slowly shuts off!???I checked for leaking pressure,wrong connections and diaphragm position!Also when i puss the diaphragm the rpm changes!
What is going wrong?
Does anyone knows sth?
I uploaded the photo of my engine,installed in a Greatplanes Extra.
12-28-2005, 11:15 AM
#2
RE: YS 53 FZ problem
What percent nitro fuel are you using?
Has this engine run well in the past?
Are you SURE the checkvalve is on the correct line and it is connected to the correct fitting on the engine?
Has this engine run well in the past?
Are you SURE the checkvalve is on the correct line and it is connected to the correct fitting on the engine?
12-28-2005, 11:20 AM
#5
Thread Starter
RE: YS 53 FZ problem
E,i run it with 10% nitro and 18% oil.
Also the engine is not mine.I bought it from a guy that told me that is running perfectly.
The engine when i first bought it was very clean inside,not any damage or damage on crancase.
And the check valve is in the correct position![&o]
Also the engine is not mine.I bought it from a guy that told me that is running perfectly.
The engine when i first bought it was very clean inside,not any damage or damage on crancase.
And the check valve is in the correct position![&o]
12-29-2005, 04:22 AM
#7
Thread Starter
RE: YS 53 FZ problem
Yea but i bought a fuel called Jet,to see 
how it works!I think it is good.Do you know it?Also what about Byron fuel?That contains 15% nitro and 20% oil.?Also do you have any pics of your YS engines?
how it works!I think it is good.Do you know it?Also what about Byron fuel?That contains 15% nitro and 20% oil.?Also do you have any pics of your YS engines?
12-29-2005, 04:49 AM
#8
Senior Member
RE: YS 53 FZ problem
Kostas,
...Only 20% nitro, or more is needed.
Also, as little as possible Castor oil, but no less than 20% total oil.
This engine will likely overheat with 15% nitro, or with less oil.
A 30% heli fuel mix is even better.
This goes for ALL YS engines, not only the .53FZ.
Only the 1.40 Sport can do with only 15% nitro.
But you might also have another problem, from what you are describing.
...Only 20% nitro, or more is needed.
Also, as little as possible Castor oil, but no less than 20% total oil.
This engine will likely overheat with 15% nitro, or with less oil.
A 30% heli fuel mix is even better.
This goes for ALL YS engines, not only the .53FZ.
Only the 1.40 Sport can do with only 15% nitro.
But you might also have another problem, from what you are describing.
12-29-2005, 11:09 AM
#9
Thread Starter
RE: YS 53 FZ problem
I wish i knew the problem.[
]Anyway i will buy tomorrow 25% nitro and 20% oil from byron fuel,to see what is going on.
What other problem maybe is?
]Anyway i will buy tomorrow 25% nitro and 20% oil from byron fuel,to see what is going on.What other problem maybe is?
12-29-2005, 01:39 PM
#12
Senior Member
RE: YS 53 FZ problem
Kostas,
Do you mean you are closing the adjustment screw?
This screw should be very close to flush with the surrounding surface.
You should not be able to directly push it, or even to see it, or there is something missing (the adjuster screw...).
You can read the *.pdf manual [link=http://www.ysperformance.com/pdf%20manuals/FZ63.pdf]here[/link] (it is the older .63FZ, which is identical to its older brother, the .53FZ).
Do you mean you are closing the adjustment screw?
This screw should be very close to flush with the surrounding surface.
You should not be able to directly push it, or even to see it, or there is something missing (the adjuster screw...).
You can read the *.pdf manual [link=http://www.ysperformance.com/pdf%20manuals/FZ63.pdf]here[/link] (it is the older .63FZ, which is identical to its older brother, the .53FZ).
12-29-2005, 03:18 PM
#13
Thread Starter
RE: YS 53 FZ problem
No,i am not pulling the direct diaphragm!
It has a screw after ir,isn't it?
But when i touch the screw the rpm of my engine changes!
Is this a problem?
It has a screw after ir,isn't it?
But when i touch the screw the rpm of my engine changes!
Is this a problem?
12-29-2005, 03:53 PM
#14
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RE: YS 53 FZ problem
Kostas, here is the setup on one of my .53s, the LS needle is 1.5 turns out from gently seated and the HS needle is slightly less than 1.75 turns out from closed.
M,very useful pics!I will try my engine tomorrow,again!And i will tell you all again![8D]
01-05-2006, 10:53 AM
#17
Thread Starter
RE: YS 53 FZ problem
Hi.
I just fixed the idle and the engine works perfectly.
But when i am going from idle to full throttle the rpm lowers and then it quits.
How can i fix this?
I just fixed the idle and the engine works perfectly.
But when i am going from idle to full throttle the rpm lowers and then it quits.
How can i fix this?
01-06-2006, 04:01 AM
#22
Senior Member
RE: YS 53 FZ problem
Kostas,
Both Jim and I are saying the .53FZ is identical, for all practical purposes, to the older .63FZ.
We are not talking about the YS.63FZ-S, which uses a different regulator and a one-piece cylinder (and has several other improvements). An older version of the .53FZ did not even have an idle needle, BTW, so we are not even mentioning it...
So the YS.63FZ manual is identical to the one for the newer YS.53FZ that you have, which cannot be accesses, or linked, since it was written before there was a usable Internet...
The other thing that can be done, is if someone that has your newer version of .53FZ, would be able to scan the manual and to send it to you by E-mail.
Both Jim and I are saying the .53FZ is identical, for all practical purposes, to the older .63FZ.
We are not talking about the YS.63FZ-S, which uses a different regulator and a one-piece cylinder (and has several other improvements). An older version of the .53FZ did not even have an idle needle, BTW, so we are not even mentioning it...
So the YS.63FZ manual is identical to the one for the newer YS.53FZ that you have, which cannot be accesses, or linked, since it was written before there was a usable Internet...
The other thing that can be done, is if someone that has your newer version of .53FZ, would be able to scan the manual and to send it to you by E-mail.