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10-13-2013 04:26 AM  4 years agoPost 1
bpippin

rrNovice

Fort Worth, Texas

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I have a TREX 600 with an OS .55 w/powerboost pipe II. This heli I fly a lot but not hard. It has always started right up without any problems and sounded great since I got it about 7 months ago. I had the main fuel line break in the main tank. I repair it. No crashes I might add. My reserve tank is 2 oz. The fuel obviously goes from the large tank to the little one then to the fuel filter and engine. I noticed over time I had to kick up a little trim when starting the heli recently. It wouldn't start so I have it more idle and we were ready to go. I replace the Glow every gallon of fuel and I have run about 5 gallons. I was flying the heli one day and I decide to low level hover and then the heli acted like it may be starving for fuel. By the time I landed, I was almost at full stick then it died on the ground. It hasn't started since. I found a bad glow. Check all fuel lines and filters. I even bypass all the lines and went straight with fuel into the engine so I could see it. I used a another piece of house to blow through the carb to make sure it was clear. It was. I checked the compression only by turning the crank shaft and it "felt" normal. I am looking for ideas before pulling the engine. This heli is perfectly set up and I hate to pull it.

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10-13-2013 03:15 PM  4 years agoPost 2
PilotPin

rrApprentice

Indiana -- USA

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Sounds like you have check every possible thing. One thing you didn't say was whether the fuel is actually getting into the engine. If you don't want to take the engine out either prime the engine or strap another fuel tank on it for a test. If it has fuel and a good glow plug it should at least fire.

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10-13-2013 08:32 PM  4 years agoPost 3
bpippin

rrNovice

Fort Worth, Texas

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I did test this. When you turn over the engine you from a new fuel source and line, you see it draw in the fuel. I am at a lose here. I know a little about these little engines however this Heli Engine has a bigger looking carb and more needles. I haven't touched them since I had someone tune it up for me so I have left it alone. Is it possible the carb ingested something causing it not to get fuel actually in the cylinder? Im at the point that even if I did pull it, what would I do besides take it all apart?

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10-14-2013 02:42 AM  4 years agoPost 4
PilotPin

rrApprentice

Indiana -- USA

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Check the head bolts make sure they are tight. Then make sure it has compression by turning it over with a hex wrench by hand. Make sure the glow plug is actually lighting.

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10-14-2013 11:32 PM  4 years agoPost 5
bpippin

rrNovice

Fort Worth, Texas

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I opened the carb and was able to get some fuel inside of it. Then attempted to see if it would turn over. Nope. I just took the crank shaft and stuck it in the start hex as you suggested to see how much resistant I have. It has some, but I can spin it by hand. I must have a blown piston.

If this is the case and I think this is the ringed version of the HZ-R engine. Is there special tools needed to replace the piston? If my memory serves, isn't it a sleeve and piston is what's needed. First I would need to find out why the piston is blew is it is. I will take the engine out tonight and find out. Hopefully you can lend me a hand if needed.

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10-14-2013 11:51 PM  4 years agoPost 6
bpippin

rrNovice

Fort Worth, Texas

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I also wanted to add I took the glow out and was able to spin the motor over and see the piston moving up and down and you could here the pushing and suction of air. Visually looking through the hole with a flashlight, I can not see any damage to the piston. I doubt I am seeing the edges. However, while I was doing this, black fuel/oil was coming out of the engine and the engine froze while spinning it without the glow plug in it. I use a Ryobi drill to start mine and it stopped it. Then it blew more sludge out and started spinning freely. It really sounds to me the engine is poof and hopefully the sleeve and piston idea I mentioned is all I need. I am sure there is more I should do while this engine is broken down. I will take any and all advice to extended care of this 300 dollar motor.

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10-15-2013 12:48 AM  4 years agoPost 7
onebigjunker

rrKey Veteran

Wellsville, Ks

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put bearings in it while you got it out!

work hard, play even harder!!!!
Team Empire Hobby/GAUI USA

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10-15-2013 01:38 AM  4 years agoPost 8
bpippin

rrNovice

Fort Worth, Texas

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Thanks for the help. I have started breaking it apart and when I took the pipe off, there was metal in there.

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10-15-2013 01:48 AM  4 years agoPost 9
Zaneman007

rrElite Veteran

Texas - USA

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You may have over heated the engine. Did you check for air leaks?
I had the main fuel line break in the main tank. I repair it.
It may be time to replace all of the fuel lines.

Old Guys Rule!

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10-15-2013 02:09 AM  4 years agoPost 10
dkshema

rrMaster

Cedar Rapids, IA

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when I took the pipe off, there was metal in there.
black fuel/oil was coming out of the engine and the engine froze while spinning it without the glow plug in it.
That sounds real bad for the home team!

Black residue coming from the innards of the motor are never a good sign; it is a sign of imminent failure.

Rear bearing perhaps is falling apart, by now I would guess the piston, ring, and perhaps cylinder (rear bearing, too) are shot.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-15-2013 03:13 AM  4 years agoPost 11
bpippin

rrNovice

Fort Worth, Texas

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Found the problem. A ball off the rear bearing got loose and bounced all around damaging the piston rod, under side of piston, shavings, scored the piston and rungs, and back plate scratched up. I guess I will have to get another 300 engine or hope to find a place to look for someone with a broken case. No idea where to look.

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10-15-2013 05:18 AM  4 years agoPost 12
dkshema

rrMaster

Cedar Rapids, IA

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RunRyder Classifieds are a good place to start...Engines and Mufflers.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-16-2013 09:30 PM  4 years agoPost 13
2LTime

rrKey Veteran

Walworth,NY

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If it's only seven months old, send it in to hobby services. It's warranted for 2 years I believe. If the problem is the bearing came apart, they should cover it.

Jeff

If you can't learn to do it well, learn to enjoy doing it badly.

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10-19-2013 04:50 PM  4 years agoPost 14
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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bpippin
My best advice for you: Would be to buy an OS50 until you become more experienced.
They are very inexpensive now.

P.s.
you don't need to change the glow plug every gallon and
get some one to teach you how to tune your engine.
if your burning glow plugs every gallon you were too lean all this time

spending time, paying attention

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