Kingy / AI Fix Finder

A valve stem drifts sideways as the engine turns

The initial V8 review found lateral valve movement; the retained correction fixes each valve axis.

kingy tested

What happened

Valve stems move sideways while the crank angle changes.

Original Inside the Machine procedural V8 implementation

Use fixed valve axes with sliding rocker pads; keep the mechanism driven by the shared crank angle.

Corrected browser geometry checks reported maximum valve-axis drift 4.45e-16 normalized units.

Initial within-task mechanics review found sideways valve-stem motion.

Use the corrected engine-scene.mjs in the source download.
Run the included mechanics tests.
Inspect actual world coordinates at multiple crank angles with the browser QA script.

Sources & limits

Record checked 2026-09-06.

Applies to this illustrative procedural model. It is not validation of a production physical engine.

Send the smallest example that reproduces it. Use a public, non-sensitive example; leave out account details, keys and private files.

Help improve this tool

About AI Fix Finder. Your feedback goes to Kingy’s private review queue.