After adjusting the snake jaw nearby, the lower pop bumper no longer fires in play, though it fires in coil test. Its skirt feels loose and sticks.

Lower pop bumper stops firing after nearby work: skirt pin off the spoon switch

Cause: The skirt's actuator rod had been knocked out of position, so its pointed tip no longer sat in the spoon of the pop's switch, and the switch gap was too wide to close.

Checks

• Lift the playfield and check the white actuator rod is centred in its yoke and moves freely.
• Check the rod's tip sits in the switch spoon and the skirt is centred.
• Check the switch gap closes with a light push on the skirt.

Fix

• Reseat the rod in the spoon, centre the skirt (loosen the pop body nuts if needed), and set the switch gap.

Systems

• Spike 2

Games

• Metallica Remastered (Premium)

Related tips

• Kong punchback fires on its own and multiball starts from the wrong shot: loose switch

Source: Pinball Repair help group!! (Facebook group)