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Werks P2 - 5 Glow Plugs in two hours

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Obsessednitrolover

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Okay, I just got the Werks P2 .21 for my T-maxx. I broke it in and was going for my ffirst good run and I stripped the spur gear. :angry: So I replaced it. I left it for two days and went out today. I took my time with her and was careful. Tuned her to the right temp. Was running beautiful. MY only problem is I can only get one start out of a fricken glow plug. I had the mc-59 and the os 5 (I think) what on earth could be my problem. 5 in two hours ADDS UP.:angry: please any info would be nice. 70/20 is my gearing. what am I doing wrong.
 
Could be any number of things. Need a little more info on the plugs. What did they look like when blown? Crushed coil? No coil? Give as much detail as you can when describing the glo plugs and that will help us tell you what is wrong.
 
Probably running the engine a bit too rich. When you say tuned to the right temp, what temp is that?

Crushed coils usually indicate an over rich setting.

Coils that are gone can be one of two things...they got crushed out....or they got burnt out. One indicates too rich...the other too lean.

BTW, you might want to check the internals of your engine for any damage the missing coils could have caused.
 
Temp was reading at 260 - 270 F. GRRRRRRRRRRRR I will pull the head of tonight and the back plate. How is my temp?

Vibration -Could that be a problem?
 
Temp sounds just right for a .21, but this is the .21 in a .15 body. It might run on the better on the hotter side...but I do not have sufficient information on that engine to tell you differently.

I'd definitely check the internals.

As for the burning up of the plugs so quickly, if you are still breaking in the engine...you might just be seeing normal failures. Break in of the engine is harsh on the glo-plugs.

If this is past the break in point, I'd say that you might still be running too rich and crushing out the coil.

As for vibration and glo-plugs, all nitro engines vibrate. Unless you have a bad batch of plugs or are using the wrong plug for the engine, vibration shouldn't really be that big an issue.

Does the Werks manual suggest any particular plug over another. Most manuals will recommend a plug for use in the engine.

NOTE: I just re-read your initial post and see that this is past break-in. Are you certain the engine is all the way broken in? Just a thought.
 
okay thanks alot, I will be looking at the internals see what fricken damage has occured. Any ways if I have any more problems I will be back. I will also try lean it out more. Thanks alot talk to you later.



they sent no breakin instructions with this motor so I did the following.

I ran just two straight tanks at idle.
I followed traxxas breakin guide for the 2.5, 6 soild tanks of fuel.
so I was on my ninth tank with a killed the spur gear. and today I ran another 5 to 7 tanks. I was really takeing note the the engine temp. I be back later. gonna go rip the motor apart.
 
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I think your temp is a tad high. I have the exact same Werks engine in a 2.5 Maxx. It does not run that hot. The engine never made much power until I put on a tuned pipe. I used an RD Logics pipe. However, it never overheated, nor did it chew up glow plugs. I realize this information does not solve your problem, so here is a quote from another site that might help you:

Your glow plug temperature range is too hot when: The glow plug filament is broken or collapses frequently. There are several cures to these problems. We suggest using a fuel with less nitro methane content or using a colder plug than the one currently in use.
Click to expand...


Also, I would check drivetrain and everthing to make sure there is nothing binding, which would cause a big drag on engine resulting in overheating. One more thing, the one-way bearing on my EZ-Start was rubbing the backing plate, after tightening up the three screws. I sanded away some of the back side of the plastic gear that the bearing sits in, and this fixed it. :2cents: Werks sent me a corrected backplate just last week. If you don't catch this in time, it could weld the one-way bearing to the crank. Your motor has probably got the corrected backplate, but you never know.

Please post your findings. I'm curious to see what the problem ends up being. Hopefully it is an easy fix.

PS - Mine runs great now. You will be very happy with this motor once you get it right. :naughty:
 
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p2 glow plug

i was told to run mc-8 when i bought my p2.
never had a problem!
i try to keep temp around 240-250.

good luck, hope this helps!
 
Are you using the stock pipe? Might be wrong but with the stock pipe would you not have too much back pressure, causing heat to build up?
 
Let me first say that I don't have a P2,but as nitros go those temps sound high to me. I would richen it up a bit. A compressed, broken, or missing plug means too lean. Definately check out your enternals, becaus missing means foreign metal melted down into the combustion chamber. The resust of too rich puts deposits on the coil turning it dark. This doesn't allow the plug to heat up properly causing the engine to be boggy, or die. I use a MC-8, or an OS A5. The OS 8 would be a little hotter than the A5, so maybe thy it out in cooler weather. I run indoors in the winter, so thats where I use the MC-8, because it is in between the A5 and the 8. Hope this helps.
 
What fuel and percentage are you running? I've read that higher nitro can cause the glow plug to get crushed due to the higher compression. If your running anything higher than 20% nitro, you might have to shim the head taller or at least try to put two glow plug washers under the glow plug.
 
I'm my experience with mills sizes .21+ i have always had the best results with odonnel 99 (cold) plugs. although the P2 is a .21 in a .15 case things may be different. i can't realy help you on why your mill is eating plugs up..but just wanted to drop a line on how well the odonnek 99's work for me.
 
Well I am now waiting for werks to replace my carb. A factory crack along the casting. lol May be it was adding to my glow plug problem. Once the carb is replace I will check back in. My Maxx is a money pit. lol It never ends. LMAO. I LOVE MY HOBBY :)
 
It's probably related. An air leak causes spiking temps that could toast plugs... hope you get it ironed out. I know how frustrating this crap can get. Especially after it dawns on you how much money you've thrown at it.

Just think, I could have 2 sets of golf clubs, 12 bowling balls or the front clip off a good hot rod... nope, just rc nitro baby!
 
i had a monster pirate with the same problem i took some sealant put it on the carb and the backing plate my problem was fixed i'd say your running to lean.....
 

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