nubsey Posted September 23, 2017 Report Share Posted September 23, 2017 Have just acquired a gas gas 125 txt 2000. Had to rebuild the clutch and put back the kick start etc. Have yet to put oil and water in it. Checked for a spark as I would like to start it for a few seconds, just to check that the kickstart is fitted ok. I.E. no ratcheting when the engine is running. Anyway there is no spark that I could see. Have replaced the spark plug and checked the kill switch. There is voltage getting to the plug, as when kicked over and holding the spark plug you get quite a belt from it. My grandson said he felt it go all the way up his arm. Anyone any ideas as sometimes these things are quite simple. The trouble is I am an old points type man. Also I think it might have a carbon lead. I hate these but are they fitted with carbon leads, All the best Nubsey Quote Link to comment Share on other sites More sharing options...
2stroke4stroke Posted September 23, 2017 Report Share Posted September 23, 2017 (edited) Expect a visit from social services on Monday when he tells the story at school☺ Edited September 23, 2017 by 2stroke4stroke 2 Quote Link to comment Share on other sites More sharing options...
lineaway Posted September 23, 2017 Report Share Posted September 23, 2017 You are grounded somewhere. Is the bike completely put back together? Did you use a new plug. Quote Link to comment Share on other sites More sharing options...
nubsey Posted September 23, 2017 Author Report Share Posted September 23, 2017 (edited) Hey 2stroke 4 stroke, Great! I did not know they also repaired motorbikes Edited September 23, 2017 by nubsey 1 Quote Link to comment Share on other sites More sharing options...
nubsey Posted September 23, 2017 Author Report Share Posted September 23, 2017 Hi Lineaway thanks for the reply. Bought the bike as a spares or repair. The young lad who owned it said it bugged out. I had to ask what that meant. It dies when revved. So he was changing a seal in the clutch case. Anyway bought the bike as my Grandson is becoming a petrol head, just like his grandpapa was at his age. This is something we can both work on. I have never seen him so excited. He looked like he had a permanent grin glued to his face. So today we put in a brand new clutch and reassembled the bike. So yes it is all put back together. Also we put in a brand new sparkplug, althought the old one worked in my lawn mower. The bike has been sitting in a garage for the last couple of years so who knows what has happened to it. As I said points and coils etc no problem but cdi etc, is something I now have to learn. Can you tell me do they have carbon sparkplug leads, as their screw in ngk fitting that goes on the sparkplug lead to fit on the spark plug. but I cannot see any copper wire, and I don't want to cut it back to see if there is any. Will look at all the earthing points that I can find and clean them etc. Any other help wil be most welcome. Nubsey Quote Link to comment Share on other sites More sharing options...
nubsey Posted September 23, 2017 Author Report Share Posted September 23, 2017 (edited) Oni nou thanks for your concern. These incidents were not done on purpose. Sometimes stuff happens.Anyway as someone once said. Volts jolts, Mills kills Edited September 23, 2017 by nubsey Quote Link to comment Share on other sites More sharing options...
bluey Posted September 24, 2017 Report Share Posted September 24, 2017 I found with my 05 pro that there is not really any visible spark unless you give it a proper fast kick. Not sure if that's normal. Quote Link to comment Share on other sites More sharing options...
b40rt Posted September 24, 2017 Report Share Posted September 24, 2017 If it's been sitting for a while a complete carb clean won't do any harm. Quote Link to comment Share on other sites More sharing options...
nubsey Posted September 24, 2017 Author Report Share Posted September 24, 2017 Thanks b40rt, yes a very good idea, but one thing at a time, lets get a spark, or no matter how clean the carb is it still won't go. Have put the oil and water in it. So perhaps a few trys at bump starting next weekend. Anyway have cut 1/2 " of the ignition lead and it is copper wire. Also will get a new sparkplug cap, as the old one is U.S. There is no major hurry. Will also take the coil pack out and give it all a good clean etc. 1 Quote Link to comment Share on other sites More sharing options...
nubsey Posted September 26, 2017 Author Report Share Posted September 26, 2017 Have just put a miltimeter across the coil in the bike. On the primary circuit it shows a short. To test this I removed the wire where the voltage comes in, and measured from the terminal and earth. The secondary coil looks duff as well, there was a reading of ten ohms on my meter. So I think a new coil will be called for. Will let you know what happens next. Quote Link to comment Share on other sites More sharing options...
Andy Posted September 26, 2017 Report Share Posted September 26, 2017 Multiple topics merged. Having a single topic for a problem allows people to see what may have already been tried. Quote Link to comment Share on other sites More sharing options...
nubsey Posted September 29, 2017 Author Report Share Posted September 29, 2017 (edited) New coil no good. Hi all the new coil arrived to day. It shows much the same readings on the multimeter as the old coil. It also will not give a spark. I do get a spark when the HT wire is held close to the cylinder head, but it looks a bit weak. I am starting to lose the will to live. Will try checking all the connections, but half of them you cannot get to, and still to find the cdi unit. Really need an expert on this as it might be a bit beyond me. Still the grandson is still a bright spark and thinks that granddad can fix it. HELP Nubsey Edited September 29, 2017 by nubsey Quote Link to comment Share on other sites More sharing options...
nubsey Posted September 29, 2017 Author Report Share Posted September 29, 2017 OK latest breaking news. Just been out now it's dark and there is a small spark at the sparkplug. But can only be seen when it's dark. Is this normal for gas gas machines. Am I flogging a dead horse carrying on or can I do better and get a nice big fat juicy spark. Quote Link to comment Share on other sites More sharing options...
huski Posted September 29, 2017 Report Share Posted September 29, 2017 Will it fire on a drop of fuel poured into the plug hole?Spark on these doesn't always look good.If it fires Id look at the carb.Does the plug come out wet or dry after your starting attempts? Quote Link to comment Share on other sites More sharing options...
nubsey Posted September 29, 2017 Author Report Share Posted September 29, 2017 That is all to be done tomorrow, but like the idea of a bit of petrol in the plug hole. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.