.46 FXi deadsticks
05-11-2005, 10:25 AM
#1
.46 FXi deadsticks
Man, this thing was tuned perfectly for the longest time; must have had three gallons run thru it without a problem. Now its giving me deadsticks and acting like the idle mix is off. Could the glowplug be going (it is a bit white on the coil), or is the warmer weather affecting it? Guess I gotta re-tune....[>:]
05-11-2005, 10:52 AM
#2
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RE: .46 FXi deadsticks
Hmm,
Try the easiest solutions first... a new glow plug and a fresh batch of fuel. If that doesn't help, inspect the tank, fuel lines etc...then it might be time to start plying with needle valves.
For what it's worth, I've got three 46FX. All of them have reached a point after 20-30 flights where, all of a sudden it seems, I had to lean out the bottom end...then once set(again), I haven't had to touch the needles except for maybe a click or two either way on the high speed.
Good luck!
Try the easiest solutions first... a new glow plug and a fresh batch of fuel. If that doesn't help, inspect the tank, fuel lines etc...then it might be time to start plying with needle valves.
For what it's worth, I've got three 46FX. All of them have reached a point after 20-30 flights where, all of a sudden it seems, I had to lean out the bottom end...then once set(again), I haven't had to touch the needles except for maybe a click or two either way on the high speed.
Good luck!
05-11-2005, 12:55 PM
#4
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RE: .46 FXi deadsticks
I'd change the glow plug first. First glow never seems to last long probably because break in is hard on them. If I'm having problems with an engine that's not running right I look at the glow plug first. If the coil looks whietish I toss it. I have no problem with tossing a suspect glow plug. A dead stick on take off can cost you a plane. At the beginning of the flying season I inspect all my plane's glow plugs and replace the suspicious one with new ones. No dead sticks in 3 years is worth it to me.
05-11-2005, 10:32 PM
#6
RE: .46 FXi deadsticks
I agree....the first thing to change is the glow plug. The biggest waste of
time comes from checking all kinds of things, then finding out the plug
was bad....after you wasted a lot of good flying time.
That being said....keep in mind, the major cause of a dead engines in flight
is from leaning out and quitting. If you have a good fuel filter in line before
the carb inlet, almost all of the "gunk in the carb traumas" can be avoided.
In your case with a remote needle valve, a filter between the tank and the
needle valve is a must for trouble free flights.
Many times on these boards a Member has had a dozen Guys from all over
the Universe troubleshooting his engine problem....only to have the poster
say...."hey Guys, I cleaned the carb....and it runs fine now.
FBD.
time comes from checking all kinds of things, then finding out the plug
was bad....after you wasted a lot of good flying time.
That being said....keep in mind, the major cause of a dead engines in flight
is from leaning out and quitting. If you have a good fuel filter in line before
the carb inlet, almost all of the "gunk in the carb traumas" can be avoided.
In your case with a remote needle valve, a filter between the tank and the
needle valve is a must for trouble free flights.
Many times on these boards a Member has had a dozen Guys from all over
the Universe troubleshooting his engine problem....only to have the poster
say...."hey Guys, I cleaned the carb....and it runs fine now.
FBD.
05-11-2005, 10:39 PM
#7
RE: .46 FXi deadsticks
Same thing happened with mine but much after more than just 30 flights. I had a cut in my line from the remote needle to the carb once. Then it started to do it again. It could have been dirt though. I didn't use a filter on that engine. I thought it would reduce the fuel pressure.
05-12-2005, 08:05 AM
#8
RE: .46 FXi deadsticks
Thanks for the input, folks. The weather this week is really crappy, so I may as well pull the tank, replace the lines and clean everything; replace the glowplug. That should take care of the problem with one tuning session.[8D]
