I'm having charging system challenges. Was getting no charge to the battery. Replaced the regulator. Now charging 14.4 v at idle. Off-idle up to 5000 rpm it actually drops voltage down to 13.4 +/- 3. Very confusing. Anybody ever run into this? What might cause it? Thanks in advance for your help.
If the battery is in good shape, it may be that the regulator is cutting back on the charge because the battery is full. Try disconnecting the spark plug, or other wise disabeling the Ignition, and crank the motor for 15 or 20 seconds. Check the battery voltage then and establish a base line. Then start it up and check the charging system again. The voltage should increase to about 2 volts over the baseline battery voltage after you crank it. As the charge builds up the charging system shold cut back to avoid overcharging the battery.
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