A recreational boat engine from the 1970s has excessive blow-by, and the owner seeks a non-invasive mitigation method to avoid a full teardown.

No software exists to diagnose engine blow-by remotely or recommend non-invasive fixes without mechanical expertise or visual inspection.

Severity

3Medium

Willingness to Pay

implied

Added

Jul 4, 2026

App Concept

BlowByPro

BlowByPro is a mobile app that guides DIY mechanics through engine blow-by diagnostics using video analysis and sound recognition. It interprets blow-by severity from engine RPM video and recommends step-by-step mitigation methods (e.g., catch can, high-mileage oil additives) or when a teardown is unavoidable.

Key Features

Video-based blow-by severity analysis using RPM and smoke pattern recognition
Personalized mitigation plan from a database of known engines and common fixes
Step-by-step video guides for catch can installation, additive use, and compression test
Community Q&A with verified mechanics for edge cases

Target Users: DIY boat owners and classic car enthusiasts who maintain older engines but lack professional mechanical training

Revenue Model: $9.99 per diagnostic report or $4.99/month subscription for unlimited diagnostics and guides

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