Hi

I am about to prime the fuel circuit in a P160SX, but have all the fuel lines, valves, etc. installed.

Is there a way to BOTH open the solenoid fuel valve (any of them - Quero start or fuel) and run the pump to prime the circuit?

With valve installed it is not possible to do it because it is NC (normaly closed)

Regards

Nuno

test functions >pump

this will open also the valves for priming

Sorry, but you don't have a manual? It's available on the JC site and you should probably be referring to it before installing and CERTAINLY before running.

If for no other reason than it conatins a caution and related instructions to prevent you from starting a fire for having primed your lines

Hi George

The test function will only open the solenoid while you're pushing the button (does not start the pump), so it is not possible to use this fuction and start the pump at same time. I guess what I am asking is not possible with JC GSU, so have to disconnect the fuel line from the valve and proceed from there.

Regards

Nuno

It is possible.
I just did it.
Read. Your. Manual.

I read it 4 years ago...

Didn't reply you before, but is this the only feed-back you have to help?.... read the manual. Is that the way RCU helps you out, when you need?

Would you be as kind as to enlighten me how to do it? Cause I can't.

Regards

Nuno

Copied from the Jetcat online manual. Seems it plainly states that the fuel solenoid will open & the pump will run. Doesn't matter if all the lines are hooked up or not, but recommended to disconnect them to keep from flooding the turbine.



The Test Functions Menu
The Manual mode is no longer implemented. Instead, a new expanded set of test functions are available from the Test–Functions Menu. To test the selected component, press the Change Value/Item key. To change the fuel pump or glow plug voltage when testing, while pressing the Change Value/Item key, press the ◄ - or ►+ key. The following functions are available ->
Value
Explanation
Pump TestVolt or
Purge FuelSystem
Opens fuel valve and runs the pump.
Default = 0.500 volts.
Note: Can be used to prime the pump and fuel system. Make sure the fuel line is disconnected from the turbine

Hi

Thanks. I have tested this and the pump runs ok, but the fuel valve does not open. It is a brand new turbine with 6.0 firmware version ECU, but maybe the fuel valve is damaged or stuck.

I'll check it out again

regards

Nuno

Check to see your solenoid valve in plugged into the ECU at the correct polarity..... Also, check that your main (manual) fuel valve is open.

.... Like Countryboy said, disconnect your fuel line to the engine to prevent flooding it and causing a wet start on the first start-up.

Check the fuel valve (solenoid) for a bad wire connection by popping off it's small plastic cover. Had this happen on mine. Resoldered wires and worked fine.

Wah, wah, wah.....Dude. I told you where to get the actual, complete, detailed and no-guessing-from-memory info (you're welcome) and I told you that the priming DOES work (you're welcome again). If you can't be bothered to go to the frigging JetCat site to look up for yourself, then I sure as can't be bothered to go there, copy the relevant paragraphs, and then paste them here in an effort to spoon-feed it to you. [:'(]

When I needed this very info last week I didn't come here asking everyone to spend their time doing my homework for me, I spent the 5 minutes it took to look it up for myself. What a shocking concept.

At first you thought the valve was good but the pump wouldn't run, but now u say that the pump is good but the valve won't open. If you can't even be bothered to read the manual more recently than FOUR YEARS AGO [X(][X(] then there is no telling what's wrong with your setup, but chances are good that it's the installer/operator that's faulty, rather than the valve or pump.

Kudo's to CountryBoy, I suppose, for having the spare time and patience to help those who refuse to help themselves.

Usually, as you know, in the rc jet scene, there is a lot more involved than just to read manuals.

You shouldn't hate that much to be without RCU. ALL the jet related items that you have come with instruction manuals, right?

If you don't bother to help and don't want to spend your time, that's easy - DON'T POST

Thanks for your valuable imputs.

Regards

Nuno

What's it to you that he asked the question? You're acting like a 10 year old.

Also DOUBLE check that it is plugged into the "correct" set of pins. (I've done that before)[&:]

Nuno, da proxima vez mande um email, que eu te respondo sem perguntar porque voce não leu o manual!

When using the pump test menu option, don´t forget to unplug the turbine main fuel line to a cup or something , to avoid soaking the turbine with fuel unless you want to see a big fireball in the next start.

abraço, Enrique.

Certainly there is more to this than is in the manuals. So..........what? That is a reason to INGORE the manual, asking others to spoon feed information to you that's in it? Ummmmm, What?

No, all problems we encounter are NOT to be found in manuals (Your questions were) but you can bet that I'm not so lazy that I can't be bothered to read one when it's applicable.

Hellooooo. I. Did. Help.

I informed you 1) that the system WAS primable when you thought it wasn't, 2) that the priming function DOES work when you thought it didn't, 3) advised that if done improperly you could creat a FIRE hazard, and 4) where to access ALL of the information in it's ENTIRETY (rather than incomplete bits and pieces) so that you could be all grown up and learn the particulars of your own equipment. Shame on me for that.

Again, you're welcome.

Hi

Thanks everyone for helping. The valve was blocked. It is ok, now.

Regards

Nuno

Hi Nuno,
I am glad you manage to get your problem solved, I read through all posts, the Country Boy told you exactly what should be done and was also very kind not telling you to read the manual. I am sure the valve was not blocked, it was probably connected on the wrong place or you reverse the polarity, a valve do not block and unblock just because it wants. Just a matter of curiosity, your English seems to me quite good, why did not you read the manual? I am sorry to ask but I am puzzled why you did not, anything against manuals

Hi Jet flash (sorry don't know your name nor who you are)

I see that it is your first post here, so before anything else, would like to welcome you.

I have nothing against manuals, in fact when I started with jets, I used to read every bit of available info, both in manuals and internet. Still do.

Since you are my country fellow, you know that when I started in jets some years ago, there were no fellow members to help and share experience, so I had to do a lot of reading, research and mainly this was made in RCU and reading instruction manuals. I never get tired to thank RCU for the help most people gave me. That allowed me to have many sucessfull flights in these years, eventhough I have started with a though plane (F18F), it was possible to do it[8D].

Solenoid valves are normally closed (NC), it means that they only mechanicaly open under voltage. If there is no voltage (reverse polarirty, power off, etc), they sure don't open.

Nevertheless, they can also jam and get stuck in either position (opened or closed). This is a mechanical issue. They don't do it whenever they want, but whenever there is a reason to happen. This may happen more often in gas valves because there is no lubrication, temperature differences (gas is very cold and dry) or dirt. To solve this, a drop of silicone oil and some tapping with your fingers usually solves the problem.

If you fly or planning to fly jets, be free to contact me.

Also look at this: http://coimbrajets2011.blogspot.com/

Regards

Nuno

Had a sticky valve just the other day.....connected up a 2s lipo directly & quickly and there was the little click I needed to hear - all well after that. They can just get stuck!

Rgds,
Mark

i had a solenoid stuck on me just the other day when trying to prime the engine .. had me double checking the manual thinking i was doing something wrong ... Same as Mark, i used a 2 cell lipo directly to the valve to get it to "click" and pop free.

~V~