wizzer Posted April 6, 2011 Posted April 6, 2011 Hi i'v got a dt125lc3 and i am having some running problems. Firstly the bike was working fine then it gradually became like this. It is almost impossible to start i have to repeatedly bump start it down a hill to get it going, when it does run it miss fires consantly and wont rev. As it warms up it gets a little better but not by much when i try to rev the bike it just stops firing then cuts back in when the revs drop. What i have done: Cleaned out the carb twice with commpressed air Inspected the reads (thought they might be broken) Checked all conections visually Possible problem: I checked the secondary ignition coil resistance and it was spot on what the book says K5.9 ohm but the primary measured at 0.23ohm and in the book it says it should be 10ohm. There is a spark but it looks a little weak When the bike was working when i washed it i would have similar symtoms but after the bike warmed up they would go away. Thanks for the help.
blackhat250 Posted April 6, 2011 Posted April 6, 2011 Hi " sounds like the HT lead,- or coil - , plug. If damp was bothering it before, Alway replace the cheapest component first, ,
wizzer Posted April 6, 2011 Author Posted April 6, 2011 Awright cheers for that Blackhat i'v already replaced the plug and i think i'l replace the cap as it's cheap Do you think with the low resistace in the primary it could be a short circuit
blackhat250 Posted April 6, 2011 Posted April 6, 2011 Not shure wizzar, Old git , is better with the ohm meter, , he will reply when back online,
wizzer Posted April 7, 2011 Author Posted April 7, 2011 Anyway little update took the ignition coil out and discovered the ht lead just about fell off it was that perished ordered a new coil and plug cap. Should there be any resistance through the plug cap even if its a non supresed type? The cap on mine gave k7.1ohms, to me this seems like alot of strain on a small ignition system.
Moderator Airhead Posted April 7, 2011 Moderator Posted April 7, 2011 Anyway little update took the ignition coil out and discovered the ht lead just about fell off it was that perished ordered a new coil and plug cap. Should there be any resistance through the plug cap even if its a non supresed type? The cap on mine gave k7.1ohms, to me this seems like alot of strain on a small ignition system. There should be no resistance through a non suppressed plug cap, yours must have a loose connection and is best replaced, also the ig primary is low as you say so youre doing right by replacing both IMO
wizzer Posted April 17, 2011 Author Posted April 17, 2011 Got it sorted, it was either the coil or ht lead. First thing to do now is go a wee run i think Thanks for all the help AGAIN!!!
Moderator Airhead Posted April 17, 2011 Moderator Posted April 17, 2011 Good result wizzer, thanks for the feedback
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