FZR 400 CHARGING ISSUE
Posted: Mon Jun 04, 2012 5:16 pm
Hi,
FZR 400 1WG 3EN1 1988. It has a three face (3-cable) stator/coil which seem to measure ok with an omometer. Also I can fire the engine up and measure AC Voltage output on the faces starts from 15-16 Volts AC at iddle and when revving it goes up to 40-57 Volts AC. But when connecting the regulator/rectifier (the ones that mounts into the frame under the fuel tank, it has 4 pins) the DC output is 0.98 Volts DC. So i thought it was faulty regulator and i ve change it from another 3EN1 FZR (used one from Ebay) but again same thing. Under 1 Volt DC. Nowhere near 12-13V DC output. So then I thought that all these regulators are crap (since they are really aged) and got a brand new one from Hong Kong for 15 quid. Same thing!
Fianlly I ve changed the coils and put a another set of coils from another FZR400 and also changed the magneto. I dont know if the new coils were working 100%, the donor bike used to work fine but I didnt test it with a voltometer back then to make 100% sure and now has no carbs fule tank etc in order to do it. I took its coils and its magneto straight to my bike. The coils are measuring ok resistance wise (seems) and their windings looks just fine (no burns etc). Still the same issue! I have now connected a R1 regulator the 3-way cable from the coils going directly to the R1/R6 regulator and the output of that regulator goes just to a voltometer. So the whole FZR400 loom is irrelevant (in case it had some sort of shortage).
When revving to 3000-4000 rps the regulator's output even with the other set of coils reads 0.98 Volts DC. But... what i ve noticed is that if we play with the idle to drop the revs to the point that the engine will stop completely, close to that point (engine going slower to ... stop) the voltage starts raising to normal levels 7-8-9-10 Volts DC as it should! Its very peculiar! I.e. with less revs it produces the DC voltage. I dont know what i am missing here...
Any hints very welcome!
Kind Regards,
FZR 400 1WG 3EN1 1988. It has a three face (3-cable) stator/coil which seem to measure ok with an omometer. Also I can fire the engine up and measure AC Voltage output on the faces starts from 15-16 Volts AC at iddle and when revving it goes up to 40-57 Volts AC. But when connecting the regulator/rectifier (the ones that mounts into the frame under the fuel tank, it has 4 pins) the DC output is 0.98 Volts DC. So i thought it was faulty regulator and i ve change it from another 3EN1 FZR (used one from Ebay) but again same thing. Under 1 Volt DC. Nowhere near 12-13V DC output. So then I thought that all these regulators are crap (since they are really aged) and got a brand new one from Hong Kong for 15 quid. Same thing!
Fianlly I ve changed the coils and put a another set of coils from another FZR400 and also changed the magneto. I dont know if the new coils were working 100%, the donor bike used to work fine but I didnt test it with a voltometer back then to make 100% sure and now has no carbs fule tank etc in order to do it. I took its coils and its magneto straight to my bike. The coils are measuring ok resistance wise (seems) and their windings looks just fine (no burns etc). Still the same issue! I have now connected a R1 regulator the 3-way cable from the coils going directly to the R1/R6 regulator and the output of that regulator goes just to a voltometer. So the whole FZR400 loom is irrelevant (in case it had some sort of shortage).
When revving to 3000-4000 rps the regulator's output even with the other set of coils reads 0.98 Volts DC. But... what i ve noticed is that if we play with the idle to drop the revs to the point that the engine will stop completely, close to that point (engine going slower to ... stop) the voltage starts raising to normal levels 7-8-9-10 Volts DC as it should! Its very peculiar! I.e. with less revs it produces the DC voltage. I dont know what i am missing here...
Any hints very welcome!
Kind Regards,