DA150 Will Not Start

AUFlyer · 04-21-2007, 09:03 PM

I have a DA150 that at times will not start. It usually starts the first couple of times, then about the third time I try to start it, it wont start. I usually choke it until it pops, then remove the choke and start it after 3-4 flips. When it won't start, sometimes it pops when choked, sometimes it doesn't. The carb seems to have gas in it, at least when you remove the choke, you get gas all over you hand. When I check the plugs they don't appear wet however, so I'm thinking it is not flooded.

I have been having this problem all spring. I have replaced the iginition, replaced the carb, replaced the fuel line, checked the inside of the tank, hard wired the ignition(removed the DA furnished connector on the ignition.) Over the winter I did install cans, installed a choke servo and replaced the fuel tank/fuel line. I have since removed the choke servo and replaced the fuel tubing again. I am not sure, but I think that it originally had large fuel line and used medium. Don't know if that could have anything to do with it.

I am at a lost as what else to try...any suggestions???

Thanks

TonyThomasian · 04-21-2007, 09:28 PM

Are you sure that when you open the choke, that the butterfly opens up all the way? Make sure it opens all the way... Just a suggestion..

AUFlyer · 04-21-2007, 09:37 PM

That's why I took the choke servo off, I was never really sure it it was getting choked. Now I just flip the choke lever by hand. Of course, after today I have had the problem with two different carbs.

Xipp · 04-21-2007, 09:43 PM

I dont know how old that engine is but is sounds like it could have slipped a hub and the timing is now off.I have seen this happen a number of times on engines that have never suffered a propstrike

3ddd · 04-21-2007, 09:49 PM

aj lee has a brand new 150 that is the same way.it cost him his airplane in el paso

Dan767 · 04-21-2007, 10:05 PM

When the idle is set too lean, the result is what you're getting. The engine is hard to start, when it does start you have to coax the throttle to get it to stay running. Set the low end a little richer and try again. If it floods when you're trying to start it, turn OFF the ignition, open the throttle full, flip the prop 8-10 times. close the throttle and try and start without the choke closed. You might have to re-choke the engine to get it to start.

catman3070 · 04-21-2007, 10:07 PM

My 100 is the same way. First time of the day must choke until it pops, turn off choke and flip 4 more times. After the 1 st flight to try and start it without the choke. Usually it starts on the 3rd flip. If not I choke it for 1 flip then turn it off, flip 4 more times and it fires. If I choke it until it pops every time I will be flipping it until my arm gets sore.

One other thing to check. Make sure the piece of fuel tube coming from the pressure tap in back of the carb doesn't have a hole in it. Not sure on the 150 but on the 50 a hole doesn't help with starting any time.

AUFlyer · 04-21-2007, 10:47 PM

I'll richen the low end and try that tomorrow.

Bill_Higgins · 04-21-2007, 10:55 PM

	Quote: Originally Posted by 3ddd
	aj lee has a brand new 150 that is the same way.it cost him his airplane in el paso

I spoke with A.J last week after we returned his engine to him. By his own admission, it turns out that the source of his problems were realted to his ignition power source.

Bill Higgins

rdgood · 04-21-2007, 11:44 PM

Bill and AU, If the power source was the problem - I certainly hope that a regulated power source was recomended. This is very important(IMHO) and should not be over looked. Fromeco reg and a lion batt or something similar is always a good bet.

Sorry for the shameless Fromeco plug there..couldnt help it...

Ronster

3ddd · 04-22-2007, 12:11 AM

	Quote: Originally Posted by Bill_Higgins
	I spoke with A.J last week after we returned his engine to him. By his own admission, it turns out that the source of his problems were realted to his ignition power source. Bill Higgins

by his own theory not admission

3ddd · 04-22-2007, 12:14 AM

so it is not missed up it was a regulated power supply on his ignition,i am not here to argue with anyone about it so as far as i am concerned my 3w runs perfectly without a regulater so i have no problems,not directed at you ronster

04-21-2007, 09:03 PM	#1 (permalink)
AUFlyer Flyin' Around Join Date: Mar 2006 Location: Saraland, AL Age: 51 Posts: 25	DA150 Will Not Start I have a DA150 that at times will not start. It usually starts the first couple of times, then about the third time I try to start it, it wont start. I usually choke it until it pops, then remove the choke and start it after 3-4 flips. When it won't start, sometimes it pops when choked, sometimes it doesn't. The carb seems to have gas in it, at least when you remove the choke, you get gas all over you hand. When I check the plugs they don't appear wet however, so I'm thinking it is not flooded. I have been having this problem all spring. I have replaced the iginition, replaced the carb, replaced the fuel line, checked the inside of the tank, hard wired the ignition(removed the DA furnished connector on the ignition.) Over the winter I did install cans, installed a choke servo and replaced the fuel tank/fuel line. I have since removed the choke servo and replaced the fuel tubing again. I am not sure, but I think that it originally had large fuel line and used medium. Don't know if that could have anything to do with it. I am at a lost as what else to try...any suggestions??? Thanks

04-21-2007, 09:28 PM	#2 (permalink)
TonyThomasian Rollin', Rollin', and Rollin' Join Date: Jan 2006 Location: Tigard,Oregon Age: 17 Posts: 2,090	Re: DA150 Will Not Start Are you sure that when you open the choke, that the butterfly opens up all the way? Make sure it opens all the way... Just a suggestion.. __________________ Fromeco.org ExtremeFlightrc.com

04-21-2007, 09:37 PM	#3 (permalink)
AUFlyer Flyin' Around Join Date: Mar 2006 Location: Saraland, AL Age: 51 Posts: 25	Re: DA150 Will Not Start That's why I took the choke servo off, I was never really sure it it was getting choked. Now I just flip the choke lever by hand. Of course, after today I have had the problem with two different carbs.

04-21-2007, 09:43 PM	#4 (permalink)
Xipp Dumb Thumbin Join Date: Jan 2006 Location: Las Vegas Nv. Posts: 120 Awards Showcase Total Awards: 1	Re: DA150 Will Not Start I dont know how old that engine is but is sounds like it could have slipped a hub and the timing is now off.I have seen this happen a number of times on engines that have never suffered a propstrike __________________ http://teamsala.com/

04-21-2007, 09:49 PM	#5 (permalink)
3ddd Bad-ass Super Contributer! Join Date: Jan 2006 Location: pyote,texas Age: 55 Posts: 1,654 Blog Entries: 1	Re: DA150 Will Not Start aj lee has a brand new 150 that is the same way.it cost him his airplane in el paso __________________ Life's journey is not to arrive at the grave >safely and in a well preserved body,but rather to skid in > sideways,totally screwed up,worn out,shouting,"oh damn what a fine ride! AMA 98634 > LOOKS LIKE SINGLE LIFE IS A COMIN > Futaba, FROMECO:a good way to get a charge out of life My avitar says it all.3w all the time


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04-21-2007, 10:05 PM	#6 (permalink)
Dan767 Say again, you're garbled Join Date: Jan 2006 Location: Federal Way, WA Posts: 673	Re: DA150 Will Not Start When the idle is set too lean, the result is what you're getting. The engine is hard to start, when it does start you have to coax the throttle to get it to stay running. Set the low end a little richer and try again. If it floods when you're trying to start it, turn OFF the ignition, open the throttle full, flip the prop 8-10 times. close the throttle and try and start without the choke closed. You might have to re-choke the engine to get it to start. __________________ Dan www.ctf.org www.caringbridge.org/visit/ashleyv Isaiah 40:31

04-21-2007, 10:07 PM	#7 (permalink)
catman3070 Bad-ass Super Contributer! Join Date: Jan 2007 Location: Franklin, MA Age: 38 Posts: 241	Re: DA150 Will Not Start My 100 is the same way. First time of the day must choke until it pops, turn off choke and flip 4 more times. After the 1 st flight to try and start it without the choke. Usually it starts on the 3rd flip. If not I choke it for 1 flip then turn it off, flip 4 more times and it fires. If I choke it until it pops every time I will be flipping it until my arm gets sore. One other thing to check. Make sure the piece of fuel tube coming from the pressure tap in back of the carb doesn't have a hole in it. Not sure on the 150 but on the 50 a hole doesn't help with starting any time. __________________ Sponsored by my very own Visa Card

04-21-2007, 10:47 PM	#8 (permalink)
AUFlyer Flyin' Around Join Date: Mar 2006 Location: Saraland, AL Age: 51 Posts: 25	Re: DA150 Will Not Start I'll richen the low end and try that tomorrow.

04-21-2007, 11:44 PM	#10 (permalink)
rdgood Bad-ass Super Contributer! Join Date: Jan 2006 Location: Portland Oregon Age: 48 Posts: 821	Re: DA150 Will Not Start Bill and AU, If the power source was the problem - I certainly hope that a regulated power source was recomended. This is very important(IMHO) and should not be over looked. Fromeco reg and a lion batt or something similar is always a good bet. Sorry for the shameless Fromeco plug there..couldnt help it... Ronster

04-22-2007, 12:14 AM	#12 (permalink)
3ddd Bad-ass Super Contributer! Join Date: Jan 2006 Location: pyote,texas Age: 55 Posts: 1,654 Blog Entries: 1	Re: DA150 Will Not Start so it is not missed up it was a regulated power supply on his ignition,i am not here to argue with anyone about it so as far as i am concerned my 3w runs perfectly without a regulater so i have no problems,not directed at you ronster __________________ Life's journey is not to arrive at the grave >safely and in a well preserved body,but rather to skid in > sideways,totally screwed up,worn out,shouting,"oh damn what a fine ride! AMA 98634 > LOOKS LIKE SINGLE LIFE IS A COMIN > Futaba, FROMECO:a good way to get a charge out of life My avitar says it all.3w all the time Last edited by 3ddd; 04-22-2007 at 12:24 AM.

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