Vehicle mechanic struggles to diagnose a no-start condition after replacing fuel tank and pump on a 1988 Ford E150, with fuel not reaching the high-pressure pump.

Existing repair manuals or online forums provide general guidance but lack integrated diagnostic workflows and parts compatibility checks for older vehicle systems.

Severity

3Medium

Willingness to Pay

implied

Added

May 16, 2026

Workarounds Described

blows compressed air through fuel lines to check blockage
uses junkyard parts to avoid aftermarket sketchiness
replaces parts sequentially hoping to find the issue

Implied Software Gaps

Diagnostic software that provides systematic troubleshooting steps without requiring internet forum posts
Mobile app that logs test results and suggests next steps based on observed fuel flow and pressure

App Concept

FuelSys Diagnostic Pro

A mobile app that guides mechanics step-by-step through fuel system diagnostics for older vehicles. It provides vehicle-specific wiring diagrams, fuel pressure specs, and a decision tree based on symptoms and test results, reducing guesswork and parts swapping.

Key Features

Vehicle-specific diagnostic flowcharts for fuel delivery issues
Built-in pressure and flow test logging with photo attachments
Integration with parts databases to suggest components by VIN
Community troubleshooting logs with mechanic ratings

Target Users: Independent automotive mechanics and DIYers working on older vehicles (1980s-1990s) with fuel injection systems

Revenue Model: $19.99/month subscription for single user; $99.99/year pro tier with unlimited vehicle profiles

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