I tried to fire up my new 58 today to no avail. It is getting fuel when I choke it and briefly ran for a few seconds then died, also dies when advancing throttle, but I have tried richening the needles with no luck, my old 58 would fire right up....this one not so much.

Mine came back with the needles 4 turns out...took forever to figure out!

I set mine to the recommended settings and have gone probably a full turn in either direction trying to get it to run.

did you get the new style ignition? If you did there were some that the magnets are in the wrong place

I had one of the first Evolution 58's and I don't regret getting rid of it and buying a 3W after reading stuff like this. The worst part is having to call Horizon and not being able to talk to the person working on your engine. However, I do hope things work out, sorry to hear you're having trouble. I've been there and it's no fun.

ive had the first 58 as well as the gx-2 and both started and ran with 2 turns out and I adjusted them from that point on with little trouble except for the new gx-2 needs a bigger battery dont try and run it with a 6v battery.

What it is doing is pretty weird I have had it fire immediately when I turn on the ignition and it is getting fuel. If I choke it for more than 3 flips gas is pouring out of the carb, for the ign batt I am running a 2 cell fromeco 2400 pack directly in to the ignition. It is very reluctant to start and then does not want to keep running, or dies when advancing the throttle over 1/4.

Check the carburator block. My came loose after 3 flights. I put some threadlocker on the screws and that fixed. Maybe I'm lock but my engine run like a champ.
Just my .02

the gas that flows from choking has nothing to do with gas supplied by pumping - is the line which goes from crankcase to carb free and clear and connected?

The line is connected and free of obstructions, I tried blowing in to the tube connected to the carb as I have heard that the fuel jet can become stuck, and that did not help either. It seems weird, I have spark because I can see a little smoke coming from the muffler after vigorous starting attempts, and it is getting some fuel, but still does not run.

some further observations, when I turn the ignition on it briefly makes a quiet buzzing noise, you almost cant hear it over the hum of digital servos. Also I have had the ignition fire randomly when turning the ignition on or off......literally while in the act of turning the switch off, or on.

the ignition fires when you turn it on its the way it works Ive had the gasses in the muffler explode when i turn it on. one thing i would refrain from doing is killing the ignition with the switch and use the throttle to kill it. when i use the switch the motor keeps spinning a little and gasses accumulate in the exhaust and the resulting explossion when i turn the switch back on has caused me to have troubles with my heart rate.

Me too

Guess what mine wont start either...This is getting old!!!
Since it came back from Horizon it has run once for about 1 minute, now it wont fire and gas runs out the carb non stop.

Gas can't run out of the carb unless the inlet needle is open, maybe a small piece of dirt under the tip....OR
Carb assembled incorrectly with the diaphragm under the gasket..OR
Inlet needle lever bent up too far, holding the needle open...
Ignitions that use Hall sensors can do that...Put the piston in a postition where the exhaust port is closed when you turn the ignition on...

Ralph,
what I dont understand is how they say they ran it fine??
Just tried to crank it again at home. Pops and then nothing except gas running out from the carb.
Trouble is it was running fine ecept the gasket between the cylinder and crank blew out, thats why I sent it in.
Doesnt seem to have as much compression and makes a weezing sound coming from the carb now.
They ( Horizon ) replaced the ignition and claim it ran fine but sent it back with the needles 4 turns out.
perplexed from Goldsboro!!!

If your carb is making a wheezing noise check all the bolts that hold the carb/backplate on, my first one had a similar problem, and tightening the bolts cured the problem

Ill do that in the AM, so how did they run it like that? they dont get loose in shipping....the smell gets worse. shouda bought a DA and I hate to say that!!
I dont believe they ever ran it.

Next time you try to start it, take the fuel line off after it pops and keep trying..This will keep it from getting too rich....If the needle is leaking it should start and run for a few seconds, then die..Can't hurt anything, at least you'll maybe find the problem...
Set both needles 2 turns out before you crank it....

well, mine is being a PITA to start I choke it and it just won't pop, 3....6....10 flips and gas is pouring out of the carb after a couple flips, I have pulled the plug and it is not flooded, it seems like it should be though, and I have checked spark it seems to have a much stronger spark when turning on or off the ignition, than during normal operation, guess that's why it wants to pop when i turn it on or off, It really shouldn't be this difficult to start a brand new engine.

also when I have miraculously gotten it to run it only runs for a few seconds at idle and dies or dies when trying to advance the throttle.

One thing seems to be pretty constant about the Evolution line of gassers. You rarely to never hear any righteous praise being bandied about for them. I think the one post above is the first one that I have seen that had anything positive to say about them.

Has Horizon managed to introduce another MDS type line of engines? I hope not because we really do need another line of reliable gassers, especially in the 50 to 70cc class.

Maybe your engine is one of these?

http://www.rcuniverse.com/forum/m_4654675/tm.htm

My 58 gx 2 has been starting ok i only have about 3 gal through it. In an effort to get it to run smooth at low rpm's i have tunned it but its not as dependable as my DA had been durring this prosses when the tank gets low the transition seems to go lean ill do touch and goes and twards the end of the tank she has failed to spool up and over run the runway as a result between that and the 6V decale on the ignition wire leading me to think it would run on a 6V battery ive lost 2 props and some cosmetic damages. Is a little extra power worth this? Im thinking not Ive spent weeks not wanting to fly the thing due to these issues as well as running low on Prop $ next time out im turning the low end screw out more and living with the burbles so much for 3-D flying this year unless it settles in soon

That is the way of things I am afraid no one ever reports good news its not news worthy, there a quite a few MVVS nee Evolution gassers being used on the QQ Yak that are not reporting trouble, so one assumes they are fine.

Mike

Did have the 26 Excellent. Have the 35 and 45 in operation, both are superb. !!!
Have the impression that in this case the carburettor is faulty or the lines are connected wrong.
In both cases is does not say that much about the quality of the engine itself.
Go to the MVVS support forum for some help.