CDI-komutator honda nsr 125 r
Napisao 19 July 2011 - 00:39 AM
Ignition is composed of a coil with a large black wire on which is screwed a cap, of a CDI unit, of a pair of charging coil in the alternator (about 200V AC), of a impulse coil. What do I have to do if I am broken down? Initially test Front system: check that your plug cap is engaged completely. Watch your plug, if it’s fatty of gasoline you’ve got an ignition problem .A small test will be easy: Put the plug on the cap and flat pose it on the cylinder head, give 2-3 blows of starter
1) If you see sparks on the plug, your ignition seems ok, probably a question of timing (see impulse coil).
2) if not, test in the order the coil and then the alternator.
3) If everything ok your CDI is probably worn , prior of changing it , check your wiring and the connectors
Note : the spark is normally blue , if it’s yellow-red it could be the sign of low charging by the alternator
checking the coil
You need an ohmmeter of good quality and preferably digital (more precise). A coil is an autotransformer with a primary (wire black/yellow and green) and a secondary (the large black wire with the cap)
- Primary 0.1 - 0.3 Ohms
- Secondary with the cap 6500 to 9700 Ohms (bottom inside and a terminal on the coil)
- Secondary without the cap 2700 to 3500 Ohms (unscrew the cap, test middle black and terminal)
The cap has a value ranging between 3000 and 7000 Ohms and to test it is enough to make the 2 measurements above, if you to replace it buy one Bent.
The measurement of the stator 0.7 Ohms between each yellow (they are coils production of current) and 80 to 180 Ohms between red/black and green (charging coils of CDI). For information: each yellow wire corresponds to 3 coils (poles) in series, the 3 wire yellow are connected in Y as in a three-phase electric system, this is why if you test between 2 yellows you has 6 coils in series (either 6 poles). The stator thus has 9 small poles (3x3) + 2 large poles (CDI charging with 2 reels in series).
Checking impulse coil
ignition is timed by a small coil which creates the releasing current of the CDI THYRISTOR door, this coil has 2 wires blue and green/white , the wire of exit on the alternator are located close to wire of exit of the load. the ohmmeter must indicate to you between 180 and 280 Ohms.
Napisao 19 July 2011 - 01:04 AM
na dvopolnom konektoru, jedna žica ide na alternator, "visok" napon (200v ac), druga ide na start prekidač.
na četvoropolnom : masa, pikap, na RC valve control, na primar bobine+obrtomer
sad opet pitanje, osim što nemaš varnicu, šta si proverio pre da bi sumnjao direkt na cdi?
Napisao 19 July 2011 - 01:34 AM