The 4-Step Auto-Draw Fix
Step 1: Unscrew the cart immediately. Don’t try to ride out the misfire. Every second of unintended firing burns oil and cooks the coil. Get the cart off the battery first, then troubleshoot.
Step 2: Clean both connection points. Dip a cotton swab in isopropyl alcohol (70% or higher). Wipe the inside threading of the battery and the bottom contact of the cart. You’re looking for sticky oil residue or moisture sitting on the contacts. Most stuck-firing issues end here.
Step 3: Reset the pressure sensor. With the cart still off, seal your lips around the top of the battery where the cart screws in and blow firmly for two or three seconds. This pushes air backwards through the sensor channel and clears anything blocking it. If oil comes out, that was your problem — oil had leaked into the sensor chamber. Wipe it dry and repeat.
Step 4: Let it sit upright for 10 minutes. If moisture caused the misfire, the battery needs time to dry. Stand it on the threading end (cart side up) so any remaining liquid drains away from the sensor, not into it. After ten minutes, screw the cart back on and test.
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