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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › OS105HZ-R fuel pressure regulator problem?
09-07-2013 07:26 PM  5 years agoPost 1
McKrackin

rrProfessor

Lucasville,Ohio

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It was running super rich and when I landed it was dumping fuel out the carb...because it died before I hit throttle cut.

Tried to restart and it was hydro-locked.

Emptied the cylinder and tried again and fuel just POURS out the exhaust.

I am pretty sure the pressure regulator is stuck wide open/

Am I right?

I literally never use the word literally right.

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09-07-2013 08:13 PM  5 years agoPost 2
dchekas

rrKey Veteran

Farmington, CT

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Yes.

Disassemble the regulator, and blow it out thoroughly. Something has jammed the inlet valve open.

Team Align, Team Futaba, Team Byron Fuels, Team Thunder Power

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09-07-2013 08:29 PM  5 years agoPost 3
McKrackin

rrProfessor

Lucasville,Ohio

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I've done that a couple times.
I think it's time for a new one.

Hard to believe that little thing is $110....Oh well.lol...

Thanks

I literally never use the word literally right.

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09-07-2013 08:35 PM  5 years agoPost 4
McKrackin

rrProfessor

Lucasville,Ohio

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I pulled the fuel line off the carb and stuck a long fuel line on and tried to blow through it and I can't.

I tried til my eyes bulged and my ears popped.lol...

It seems closed.

I literally never use the word literally right.

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09-07-2013 08:43 PM  5 years agoPost 5
McKrackin

rrProfessor

Lucasville,Ohio

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Tried again.

Turned it over a few times.
Waited a few seconds and tried again and it was hyro-locked again.

Put the long line back on the carb and blew through it and it's wide open and easy to blow in it.

The Switchglo won't light my plug now...Probably because the cylinder is full of fuel?

I literally never use the word literally right.

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09-07-2013 08:49 PM  5 years agoPost 6
NQNA

rrElite Veteran

USA

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I might know how to help.. But you're an arse

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09-07-2013 08:50 PM  5 years agoPost 7
McKrackin

rrProfessor

Lucasville,Ohio

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lol...Whatever

Ignore...You're not doing it right

I literally never use the word literally right.

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09-07-2013 08:57 PM  5 years agoPost 8
dchekas

rrKey Veteran

Farmington, CT

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The only way it's going to dump fuel out of the carb like that is if the stopper valve in the regulator isn't closing.

You will likely need to remove your glow plug and turn the engine over to get all the excess fuel out.

You may want to clean your fuel filter and ensure there isn't further debris that can make its way into the carb.

Team Align, Team Futaba, Team Byron Fuels, Team Thunder Power

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09-08-2013 02:11 AM  5 years agoPost 9
McKrackin

rrProfessor

Lucasville,Ohio

My Posts: All  Forum  Topic

Going to try a cheap fix to see how it goes.

I checked OS Engines carb cross reference chart and the 91HZ,the 105HZ and the 105HZ-R all have the same carb.

I'm going to drop the regulator completely.
Ordered the muffler pressure nipple and the carb fuel inlet.

Even with new fuel line and a new glow plug,this fix is $20 plus $5 shipping.

Can't hurt when the reg is $110.

I literally never use the word literally right.

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09-18-2013 08:54 PM  5 years agoPost 10
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

My Posts: All  Forum  Topic

Shouldn’t your signature be "keep your skids down"?

I would think if I was "skids up" I would be dead.

We used to see the dead hogs, cows and horses in the fields and say they were "t i t s up" meaning they were dead and laying on their backs.

When you see an animal that is t i t s up, that would be a bad sign.
I'm just saying...

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