View Full Version : Problems, Problems, Problems
03-08-2001, 11:45 PM
Okay Engine was running fine except it would stall after about 5 minutes of running, Once it cooled down it would start and run for another five minutes and stall. Now it stalled and will not start at all. The glow plug is good, there is fuel getting to the carb, nothing is blocking the exhaust?
How can I tell if it is time for a rebuild? How can I tell if it is the loos flywheel prolem mentioned in troubleshooting? I an turn the engine over with my finger using the flywheel? Please advise.
03-09-2001, 02:32 AM
if the engine is running fine at first and then is hard to keep running after it reaches operating temp, it is time for a rebuild. i ran 3 and a-half gallons of fuel through mine before i had problems. when it got about 210, it would not run for nothing, could not keep it running. hope this can help ya.
03-09-2001, 02:59 AM
Do you feel resistance when you turn the crankshaft? If you do then you may not have to rebuild. I had a problem like yours once. I had changed out my fuel and pressure lines and made the pressure one too short. With the short line my engine would start and run for some time then flood out. Now I make sure that I have enough line to loop it twice. My engine runs great, it responds to tuning and most important, I am having fun without frustration.
03-09-2001, 11:06 AM
Nitro Dan, Would it not start if the Pressure line has a leak or is too short?
I do not see any visible problems with the pressure line. I noticed some seapage around where the muffler and rubber pipe connect. Would this contribute to substantial pressure loss?
03-09-2001, 12:42 PM
Is it stalling at wot, if so check your high speed setting.
03-09-2001, 02:01 PM
When it was running, it ran fine for that short period of time WOT, Idle whatever.
I tried to start it again when I was home for lunch. It will just not hit. The engine turns over and the fuel is flowing, the glow plug is hot. No Hit though. It is sounding more like a replace or rebuild. Thanks for all the replies so far.
03-09-2001, 02:47 PM
Sorry I wasn't much help. The march edition of RC car action (nitro) has a very good article on rebuilding and diagnosing when to rebuild. You might be able to find it at www.rcnitro.com (http://www.rcnitro.com)
03-10-2001, 01:32 AM
Correct me if I am wrong...
If you're stalling after 5 minutes of running the low speed is too lean I think. Richen it up just a tad (eighth turn or less) and it should stay running after 5 minutes of driving.
My experience has been that the low speed is so sensitive that a hair either way makes a big difference.
03-12-2001, 11:45 PM
Okay I talked with the LHS and it seems that it is definitely time for a rebuild.
What do you guys recommend? Rebuild or Replace with the Traxxas Trade-in program?
Where is the cheapest place to buy a rebuild kit on the WEB?
The LHS said that they had a kit for about $40.
Where is the best place to buy Replacement Screws for the Engine Mounts? My Cheap Allen Wrenches round out the heads on two of them Argghhhhh!
03-13-2001, 01:24 AM
My choice would be to rebuild it myself. It saves 20 to 30 bucks over the Traxxas replacement policy and I'm a tightwad. http://www.traxxas.com/ubb/wink.gif If you do choose to rebuild, freshen up the loc-tite on the carb needles. Just a dab works great. I had a problem with my low speed needle "adjusting" itself after I had taken it out to clean it. Stays put now.
03-15-2001, 07:19 PM
I sent mine in for replacement,not only did it have no compression, the one way bearing was bad, and the backplate was leaking around the starter shaft bushing. Plus I figure, you get a new carb, crank, crank bearings and and rod. all for $30 more.
Oh, you get a nice new blue head.
Just my 2 cents.
03-16-2001, 01:34 AM
Super D, I concede to your logic. You are right. Craven, go for the replacement.
03-16-2001, 09:55 AM
Thanks Guys! I will definitely go with the replacement. I do not know the history of the present engine. I will be more confident with a replacement.
Thanks again for all the posts! :/
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