glow plugs in 3.3

[kracker055]

ok i need some help guys....I've got the slayer 3.3. and I'm going through glow plugs like crazy...i put a brand new one in last night and ran it for about an hour....went to start it this morning, it wouldnt start...pulled the plug and it was black and wet....and also the coil on the inside was broke. any advice on how to correct my problem?

 

[PepsiKid]

Just "running an hour" at a stretch is long for a glowplugged engine..... But it could be anything from a tuning issue ("black and wet), to poor quality glow plugs, to the wrong glow plug, to the fact that it's an rtr, to any one of a number of rookie mistakes.

 

[kracker055]

well it wasn't an hour straight.. but just an guess on total run time...i was trying a McCoy mc59 glow plug...

 

[marauder]

What fuel are you running Ryan?

On my 3.3 Maxx I had great luck running Trinity Monster 20% and any medium/hot plug. I would run it for hours, never had any temp issues or anything. I think you were out a few times I ran the heck out of it. My 2.5 Maxx only runs on Traxxas fuel, where my 3.3 liked Trinity fuel only. In this area that oil content in the fuel has a lot to do with it running in the winter or not. Obviously you don't want to run too lean just to keep the temps up. Are you covering part of the cooling head to keep the temps up?

I know you're able to tune it, best thing to do is go back to factory settings and start over some times. Could be a number of things though, if you're not able to get it I may have time this weekend if you were in the area, after all the hobby shop is in my back yard at the moment.

 

[kracker055]

lol sounds good to me....well right now its running on traxxas fuel 33%. thats what the guy i bought it off of was running it on. for some reason it just keeps going through the plugs left and right....i havent really messed with the tune much so..i didnt even think about covering the head to keep in some of the heat..ill deff have to try that...yea i remember being up there running ur maxx..

 

[marauder]

33%? Switch to a medium plug then.

 

[kracker055]

ok ill try that dustin....thats what i should have tryed the other day rather than the mc59 which was a hot plug..yea thats what fuel he was running in it when i got it so...but i think I'm going to switch it back down to the 20% when i use up all the 33 % i got

 

[NitroRC4Life]

On my revo 3.3 which is the same platform i use McCoy hot plugs and haven't burned one yet if it's tuned correctly.. and i run 20% Nitrotane fuel

 

[kracker055]

well thats my problem..I've got it way out of tune and I'm now trying really hard to get it right so

 

[NitroRC4Life]

yea if its out of tune youll eat plugs alive, but once its tuned you shouldn't burn them as much, or at all

 

[kracker055]

yea...I've just got to figure out the tune...the low speed needle is great...but its the high speed needle that is messing me up....its so far out of wack i can get it to shift so....

 

[limpinsmigle]

i would think that your engine is running too hot. If you don't have a temp gun get one and point it down the middle of the heat sink and if it is over 290 degrees your glowplug can overheat and go bad. Either that or your glow plugs your using are a cheap brand.

 

[kracker055]

thanks for all the help guys..i got my tune right and now its running great!!!!

 

[wildchild]

Glow plug help

Your tune means everything to glow plugs and your motor.
We here at S&E Raceway use S&W Fuels 15 percent and Merlin Glow plugs ,these glow plugs last along time and perform GREAT!!!


Ed