R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 09-11-2008, 08:46 AM   #1
Tech Apprentice
 
Join Date: Sep 2008
Posts: 66
Default Kyosho Inferno 7.5 Truggy - Won't Start?

I recently a acquired a new, RTR kyosho inferno truggy, which is based (almost completely) on the inferno mp7.5 buggy. It has the gxr28 engine, and was running reasonably for the first couple of tanks, then it became harder and harder to start.

Now, I'm new to all this nitro business, so it's highly possible that I'm doing something entirely wrong. But seeing as it started at first, and I'm following the instructions, that doesn't seem to be the problem.

After running in, I slowly leaned out the engine, just a tiny bit at a time, I was very careful and the exhaust was still blowing plenty of smoke. Then a stall. After that, it's become almost impossible to start. After about an hour and 20 minutes today, it finally fired up. Mid way though the tank it stalled again.

Does anybody have any idea what could be causing this? am I doing something very wrong? The idle screw has been set to roughly where it was starting before, and I've tried adjusting it either way. I'm quite literally running out of skin on my fingers from tugging at that pullstart!

Help, please?
Lawson1024 is offline   Reply With Quote
Old 09-11-2008, 10:26 AM   #2
Tech Addict
 
PinoyCali's Avatar
 
Join Date: Mar 2008
Location: OC
Posts: 722
Trader Rating: 5 (100%+)
Default

Check your glow plug.
PinoyCali is offline   Reply With Quote
Old 09-11-2008, 01:17 PM   #3
Tech Apprentice
 
Join Date: Sep 2008
Posts: 66
Default

Glow plug is fine. I also have a spare and get the same results with that
Lawson1024 is offline   Reply With Quote
Old 09-11-2008, 02:53 PM   #4
Tech Apprentice
 
Join Date: Sep 2008
Posts: 66
Default

Surely everybody here must have had trouble starting this/some engine at some point. Any tips or pointers at all are welcome. What has worked for you? What am i likely to have overlooked? How long should it be taking to fire up?
Lawson1024 is offline   Reply With Quote
Old 09-12-2008, 04:33 AM   #5
Tech Regular
 
bjr48's Avatar
 
Join Date: Apr 2008
Posts: 274
Default

Hard to say since I'm not there but if you are breaking it in it sounds like it is too rich? If it started up then later it stalled it is loading up possibly and if it is so rich that it stalled it would be almost flooded and be very hard to start again until some of that raw fuel is pumped back out of the engine. I'm guessing on this based on it being new and going through the break in. If you can't get it, do you have a hobby store in town? They should be happy to help you since you will be in all the time to buy stuff
Next time it stalls, try pulling on the starter for awhile (20 pulls?) without the glow plug ignitor and the glow plug a little loose until you feel the flooding has gone away then try starting it again WITH the glow plug ignitor. Probably will fire up easily if that is the problem. Then turn the high speed needle 1/4 turn if this all turns out to be true. If you are running with factory settings eventually you will need to lean the low speed needle some too.
There is good advice here about breaking in an engine. None of them really explain how to keep it running (which is what you need right now) but there will be plenty of advice on how to break it in.
Good luck.
bjr48 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
2007 / 08 1/8th MNL Buggy and Truggy National Series Race Danny Teh Malaysian R/C Racers 856 01-04-2009 07:04 PM
Considering some OFNA/CEN Buggies TxCZShooter Electric Off-Road 28 01-17-2007 07:01 AM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 08:23 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net