Miss firing crrc pro 50r

Home

My FlyingGiants

Blogs

Classifieds

FORUMS

Members

News

Search

Find New Posts

All Forums

Subscribed Forums

View Unanswered Threads

Search Forums

Show Posts Show Threads

Advanced Search

Tools

Post Hucker

Mark Forums Read

Sign Up!

azza690 · 11-07-2009, 03:40 PM

Hi guys just a quick ask for you out there. I have a brand new crrc pro 50R and
have run a tank through it and all went well really impresses with how well it
ran, now a week later go to run it and it is missing badly and not revving and
occassionally backfiring and then quits.
I'm thinking it's the crapping Chinese plug that came with it or theCDI unit
Any thoughts??

Al Lewis · 11-07-2009, 03:49 PM

That would be my first guess. They are NOT known to be reliable or last. Replace it with a new NGK plug. If the problem persists then you probably have a bad CDI.

Jedijody · 11-07-2009, 04:22 PM

Their weakest link is the CDI and the plug cap. The plugs are not generally the issue. Check the timing also, they are notorious for being way off, should be 28 degrees BTDC. An Rcexl ignition does wonders for that engine, I've installed many of them on it.

3ddd · 11-07-2009, 06:55 PM

be sure your battery is good and has a full charge,bypass the switch and see if that helps, the china plugs a really crap so change it out

azza690 · 11-07-2009, 07:15 PM

Thanks guys I have bypassed the switch and still the same the battery has a full charge and I think the timing is fine as It ran spot on a week ago. I will change the plug and see what happens

3ddd · 11-07-2009, 08:50 PM

be sure and check the gap on the new plug

azza690 · 11-07-2009, 09:19 PM

What gap should it be? Doesn't tell me in the book

3ddd · 11-07-2009, 09:37 PM

19thousandth will work

bcchi · 11-08-2009, 01:05 AM

	Quote: Originally Posted by 3ddd
	19thousandth will work

19 or 20 about the same,a no 11 exacto knife blade is .020.
BCCHI

2robinhood · 11-10-2009, 12:51 AM

I have one of the prototypes of this engine.
Had the ignition unit go bad in the 1st few days of testing.
It was replace with a second unit which also went bad a few weeks later.
I am running an RCEXL ignition now and have zero problems.
My revamped prototype was way out of time also, check your timing.
Make sure the hub/mag ring did not come loose and move.

azza690 · 11-10-2009, 02:23 AM

I don't the timing has moved it's still very solid did you Cdi pack up all together or did it make it miss fire like mine. I have pulled the plug out and it sparks when you turn the engine over but I think it's still not rite when it fires. Very frustrating as it went so well first run

3ddd · 11-10-2009, 07:17 AM

spark plugs will fire out of the engine but miss fire when put under a load,there have been several reports of these china plugs going bad after ot during the first flight,just change it and you might be happy with it

2robinhood · 11-10-2009, 07:27 AM

	Quote: Originally Posted by azza690
	I don't the timing has moved it's still very solid did you Cdi pack up all together or did it make it miss fire like mine. I have pulled the plug out and it sparks when you turn the engine over but I think it's still not rite when it fires. Very frustrating as it went so well first run

The 1st one quite all at once and had a high pitch whistle coming from it.
The 2nd on was breaking up.
CRRC ignitions are kow for poor connection at the plug/cap, if it is not tight it will break up/miss fire.
Try a small hose clamp on the plug cap and try it again, if the miss goes away the plug cap connection to the spark plug is loose.
This is a quick and easy try to see if it works.

azza690 · 11-10-2009, 03:46 PM

i will try that tonight as well thanks for your help

2robinhood · 11-14-2009, 04:37 PM

Did that do the fix?

11-07-2009, 03:40 PM	#1
azza690 Doo It! Doo It! Join Date: Jun 2009 Location: aus Posts: 95	Miss firing crrc pro 50r Hi guys just a quick ask for you out there. I have a brand new crrc pro 50R and have run a tank through it and all went well really impresses with how well it ran, now a week later go to run it and it is missing badly and not revving and occassionally backfiring and then quits. I'm thinking it's the crapping Chinese plug that came with it or theCDI unit Any thoughts??

11-07-2009, 03:49 PM	#2
Al Lewis Bad-ass Super Contributer! Join Date: Nov 2007 Location: Port Orchard, WA Age: 61 Posts: 6,864 Awards Showcase Total Awards: 3	Re: Miss firing crrc pro 50r That would be my first guess. They are NOT known to be reliable or last. Replace it with a new NGK plug. If the problem persists then you probably have a bad CDI. __________________ http://www.southeastrcengines.com http://www.vessaero.com Remember every second of every day there are thousands of men and women giving of their lives to keep you safe. Never forget them for they never forget you!!

11-07-2009, 04:22 PM	#3
Jedijody Bad Ass Super Contributor Join Date: Jun 2008 Location: Tacoma, WA Age: 50 Posts: 1,980	Re: Miss firing crrc pro 50r Their weakest link is the CDI and the plug cap. The plugs are not generally the issue. Check the timing also, they are notorious for being way off, should be 28 degrees BTDC. An Rcexl ignition does wonders for that engine, I've installed many of them on it.

11-07-2009, 06:55 PM	#4
3ddd tissue ? cry baby jack wagon! Join Date: Jan 2006 Location: pyote,texas Age: 58 Posts: 2,650	Re: Miss firing crrc pro 50r be sure your battery is good and has a full charge,bypass the switch and see if that helps, the china plugs a really crap so change it out __________________ 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 > HEY I GOT A DIVORCE----HELL YEA > Futaba, FROMECO:a good way to get a charge out of life,,3w all the way for a good day

11-07-2009, 07:15 PM	#5
azza690 Doo It! Doo It! Join Date: Jun 2009 Location: aus Posts: 95	Re: Miss firing crrc pro 50r Thanks guys I have bypassed the switch and still the same the battery has a full charge and I think the timing is fine as It ran spot on a week ago. I will change the plug and see what happens

11-07-2009, 08:50 PM	#6
3ddd tissue ? cry baby jack wagon! Join Date: Jan 2006 Location: pyote,texas Age: 58 Posts: 2,650	Re: Miss firing crrc pro 50r be sure and check the gap on the new plug __________________ 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 > HEY I GOT A DIVORCE----HELL YEA > Futaba, FROMECO:a good way to get a charge out of life,,3w all the way for a good day

11-07-2009, 09:19 PM	#7
azza690 Doo It! Doo It! Join Date: Jun 2009 Location: aus Posts: 95	Re: Miss firing crrc pro 50r What gap should it be? Doesn't tell me in the book

11-07-2009, 09:37 PM	#8
3ddd tissue ? cry baby jack wagon! Join Date: Jan 2006 Location: pyote,texas Age: 58 Posts: 2,650	Re: Miss firing crrc pro 50r 19thousandth will work __________________ 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 > HEY I GOT A DIVORCE----HELL YEA > Futaba, FROMECO:a good way to get a charge out of life,,3w all the way for a good day

11-10-2009, 12:51 AM	#10
2robinhood Bad-ass Super Contributer! Join Date: Aug 2006 Location: Egg Harbor City, NJ Age: 42 Posts: 2,008	Re: Miss firing crrc pro 50r I have one of the prototypes of this engine. Had the ignition unit go bad in the 1st few days of testing. It was replace with a second unit which also went bad a few weeks later. I am running an RCEXL ignition now and have zero problems. My revamped prototype was way out of time also, check your timing. Make sure the hub/mag ring did not come loose and move. __________________ . . . . . "What We do in Life...Echoes in Eternity"...

11-10-2009, 02:23 AM	#11
azza690 Doo It! Doo It! Join Date: Jun 2009 Location: aus Posts: 95	Re: Miss firing crrc pro 50r I don't the timing has moved it's still very solid did you Cdi pack up all together or did it make it miss fire like mine. I have pulled the plug out and it sparks when you turn the engine over but I think it's still not rite when it fires. Very frustrating as it went so well first run

11-10-2009, 07:17 AM	#12
3ddd tissue ? cry baby jack wagon! Join Date: Jan 2006 Location: pyote,texas Age: 58 Posts: 2,650	Re: Miss firing crrc pro 50r spark plugs will fire out of the engine but miss fire when put under a load,there have been several reports of these china plugs going bad after ot during the first flight,just change it and you might be happy with it __________________ 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 > HEY I GOT A DIVORCE----HELL YEA > Futaba, FROMECO:a good way to get a charge out of life,,3w all the way for a good day

11-10-2009, 03:46 PM	#14
azza690 Doo It! Doo It! Join Date: Jun 2009 Location: aus Posts: 95	Re: Miss firing crrc pro 50r i will try that tonight as well thanks for your help

11-14-2009, 04:37 PM	#15
2robinhood Bad-ass Super Contributer! Join Date: Aug 2006 Location: Egg Harbor City, NJ Age: 42 Posts: 2,008	Re: Miss firing crrc pro 50r Did that do the fix? __________________ . . . . . "What We do in Life...Echoes in Eternity"...

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
CRRC Pro GF50I	2robinhood	Gas Engines	85	08-15-2011 01:11 AM
CRRC Pro GF26I	TrikeFlyer	Gas Engines	1074	06-15-2011 04:56 PM
CRRC PRO GF45I any good?	2robinhood	Gas Engines	136	08-15-2010 07:11 AM
The new CRRC Pro GP50R	2robinhood	Gas Engines	0	01-31-2009 07:50 PM
CRRC Pro GF50I Propeller	rdefrei2	Gas Engines	1	12-31-2008 02:42 PM