hey everybody, new to the site, brought a 1989 fzr250 3ln to do up in my spare time, have basically finished the bike but the battery doesnt seem to be charging. i have tested the bikes charging system, battery reads 14.5v @ 6000rpm so i believe the charging sytem SHOULD be working. bike also DOES NOT draw current, Got a brand new battery so its definently not that. i can roll start the bike and i runs perfect, lights and all so i believe coils are working corectly. Had my old mans mate come have a look at it, hes an auto-sparky by trade, and even hes stumped!!! could i have a faulty regulator? any help would be much appreciated!!
14.5v across the battery terminals at 6k means the charging system - including the regulator - is working about as well as it could. What is your 'off' voltage? What is the fluid level like in the battery? Was it properly charged (SLOWLY, < 1A/hr) prior to first use? (A crash-charge at the shop will ruin it before you ever get to install it)
i believe i have found my problem. i believe my exup server is draining my battery. To test this i just went for a 40km ride and didnt rev the bike past 5k. tested the battery before i went for my ride, battery was fully charged and after the ride the battery was still fullt charged. are there any tests i can do to test if my exup server is performing correctly? drawing power etc?
The servo self-tests every time you power up. The servo drives the valve fully open, pauses for a second, then drives closed. If the valve and/or cable is stuck, then the servo will 'hunt', often using a lot of power. That said, once the key is off there should be no power to the servo. This is the best EXUP maintenance site out there - http://www.cartestsoftware.com/fz1/exupmaintenance.html
Check out these two posts to see if it helps you electrically. <!-- l --><a class="postlink-local" href="http://fzr250.com/viewtopic.php?f=30&t=3419">viewtopic.php?f=30&t=3419</a><!-- l --> <!-- l --><a class="postlink-local" href="http://fzr250.com/viewtopic.php?f=30&t=3420">viewtopic.php?f=30&t=3420</a><!-- l -->
Just checked the elec drawing and the regulator is connected to the battery at all times. This means that it can draw current from the battery if it is faulty even when the ignition is off.. I seem to recall another member having this same problem with a faulty regulator. The only other things connected directly to the battery are the ignition switch, starter motor, and its relay..
A discussion on another site had the idea thrown out that the crud atop a grungy battery could form a high-resistance short, bleeding down the charge.
