Burning glow plugs??
#1
Burning glow plugs??
I've had about 5 glow plugs go bad in my Maximum MT. It's got a Torq .16 engine on it. Maybe i'm running it too rich?? Why am I constantly burning up glow plugs???
#2

ummm...don't kill yourselves responding guys... lol
#3
Tech Apprentice

you did not give a whole lot of information. The only thing that would burn out a glow plug quickly is running to rich, or to lean. Look at your glow plug, if there is a lot of build-up on the plug you are running to rich, if the wire is deformed or broken you are running to lean, What temps are you running at.
#4
Tech Initiate

here's the guide i went off of when i first started breaking my new .21 8 port engine in.. never had any problems, and only on my 2nd plug after about 3/4 gallon of 20% fuel..
http://www.nitrohouse.com/read_your_plug.htm
http://www.nitrohouse.com/read_your_plug.htm
#5
Tech Rookie

The reason is is because all engines burn diffrently than other engines and this could be your problem you might have to buy alot of glow plugs.
#6

Thanks alot guys. I appreciate the comments.
#7
Tech Rookie

I have a Maximum ST Pro with the .16 Torq also, and have went through 4 glow plugs in 6 days trying to break this thing in and get it tuned properly.
I wonder if there is something we are missing.
Anyone have one of these trucks with the .16 and want to tell us what plugs they are using.
I am a newbie, but at $9.00 a pop, these plugs are killing my pocketbook.
I am now awaiting a shipment from Towerhobbies with some generic tower plugs...I fugured I could at least get it tuned prior to spending the big money again.
From reading what has been said above, I have 2 that broke the coils and 2 that look perfect...I am at a loss...
I wonder if there is something we are missing.
Anyone have one of these trucks with the .16 and want to tell us what plugs they are using.
I am a newbie, but at $9.00 a pop, these plugs are killing my pocketbook.
I am now awaiting a shipment from Towerhobbies with some generic tower plugs...I fugured I could at least get it tuned prior to spending the big money again.
From reading what has been said above, I have 2 that broke the coils and 2 that look perfect...I am at a loss...
#8

burring plugs meat prob u r too lean some where and it is getting too hot
#9
Tech Rookie

I got my shipment in, and set the carb richer, and I am still burning the plugs out like crazy.
I have driven the truck on two seperate occassions since, and have blown out two more plugs. I can't richen it anymore without killing it.
Is there something else I can do? A Hotter plug maybe?
I have driven the truck on two seperate occassions since, and have blown out two more plugs. I can't richen it anymore without killing it.
Is there something else I can do? A Hotter plug maybe?
#10

what plug's r u running??? in what motor????
#11

ok i c a tork it might be rich on bottom and lean on top that will still caues the plug to burn out fast...... r u getting a lot of smoke out the pipe?
#12

How to "READ" your glow plug.
OS and Turbo glow plugs go gray sooner [easier] than McCoy plugs; this is not necessarily bad. Actually when A new plug wire just goes slightly gray after a 5 or 10 minute hard run it means your very close to an optimal horsepower tune, but be careful the next step is TOO LEAN!
My rule of thumb.
1} Wire and surrounding bottom of plug wet, with like new shiny wire = rich side of optimum power 85%
2} Wire and surrounding bottom of plug starting to dry and wire starting to gray = Very close to optimum power 95%
3} Wire and surrounding bottom of plug dry, wire totally gray but not distorted optimum power 100%
4} Wire and surrounding bottom of plug dry, wire distorted = slightly lean DANGER!
5} Wire and surrounding bottom of plug dry, wire broken and distorted or burnt up = extremely lean possible engine damage!
Note: You can only "Read" your plug in a nearly new state [Wire like new and shiny] A gray plug can still operate well. But after it has totally gone gray performance can start to fall off. To test just put in a new plug and if there is no difference in performance save the gray one or put it back in. If your engine does not feel or run right tray a new plug before making major tune change's
Good Luck
(information from Paris Racing)
OS and Turbo glow plugs go gray sooner [easier] than McCoy plugs; this is not necessarily bad. Actually when A new plug wire just goes slightly gray after a 5 or 10 minute hard run it means your very close to an optimal horsepower tune, but be careful the next step is TOO LEAN!
My rule of thumb.
1} Wire and surrounding bottom of plug wet, with like new shiny wire = rich side of optimum power 85%
2} Wire and surrounding bottom of plug starting to dry and wire starting to gray = Very close to optimum power 95%
3} Wire and surrounding bottom of plug dry, wire totally gray but not distorted optimum power 100%
4} Wire and surrounding bottom of plug dry, wire distorted = slightly lean DANGER!
5} Wire and surrounding bottom of plug dry, wire broken and distorted or burnt up = extremely lean possible engine damage!
Note: You can only "Read" your plug in a nearly new state [Wire like new and shiny] A gray plug can still operate well. But after it has totally gone gray performance can start to fall off. To test just put in a new plug and if there is no difference in performance save the gray one or put it back in. If your engine does not feel or run right tray a new plug before making major tune change's
Good Luck
(information from Paris Racing)
#13

maby go back to the orgenal settings for the motor if u have the book on the motor
#14
Tech Rookie

Well, I don't know what happened.
While driving the truck a few days ago I was really impressed that I could drive the truck without burning a plug. All I did was take it back to original settings (Torq .16). After about three tanks of gas (with breaks in between) it suddenly stopped running and moving, really rapidly...it was a pretty hot day outside, and I hadn't been checking the temperature of the motor.
I knew it had seized up for some reason, and I was right. Upon tearing the engine apart I found the connecting rod was broken at the top where it meets the piston. I was driving the truck pretty hard and deserved to get what I got. I have ordered the parts to fix the truck, and expect my order in the next few days.
Hopefully by replacing the cylinder rod and piston I will also fix my glow plug burnout problem.
While driving the truck a few days ago I was really impressed that I could drive the truck without burning a plug. All I did was take it back to original settings (Torq .16). After about three tanks of gas (with breaks in between) it suddenly stopped running and moving, really rapidly...it was a pretty hot day outside, and I hadn't been checking the temperature of the motor.
I knew it had seized up for some reason, and I was right. Upon tearing the engine apart I found the connecting rod was broken at the top where it meets the piston. I was driving the truck pretty hard and deserved to get what I got. I have ordered the parts to fix the truck, and expect my order in the next few days.
Hopefully by replacing the cylinder rod and piston I will also fix my glow plug burnout problem.
#15

what does a distorted wire look like???? I am trying to tell if i need a new plug. the wire is gray about a third to halfway down. But i don't know what distorted means.