---
title: Engine Diagnostics
description: This topic covers the methods used to identify and troubleshoot internal combustion engine issues. You will understand how to use OBD-II scanners, interpret error codes, perform compression tests, and diagnose fuel, ignition, and mechanical failures.
category: trades-crafts
subcategory: automotive
difficulty: beginner, intermediate, advanced
url: /subject/engine-diagnostics
---

# Engine Diagnostics

This topic covers the methods used to identify and troubleshoot internal combustion engine issues. You will understand how to use OBD-II scanners, interpret error codes, perform compression tests, and diagnose fuel, ignition, and mechanical failures.

## Available Resources

1 Books • 2 Websites

## Websites

### 1. ScannerDanner.com

Home of automotive instructor Paul Danner's diagnostic training: free case-study videos plus a paid library of classroom lectures and his engine performance textbook. Teaches a systematic, wiring-diagram-driven approach to electrical and drivability faults using scan tools, meters, and oscilloscopes.

**Difficulty:** Beginner | **Price:** Free

**Link:** https://scannerdanner.com/

**Tags:** engine-diagnostics, automotive-electrical, scan-tools, drivability, oscilloscope-testing

### 2. repairpal.com

RepairPal is a car maintenance and repair resource offering maintenance schedules, how-to guides for common issues, and transparent cost estimates, plus access to a network of certified repair shops.

**Difficulty:** Intermediate | **Language:** English | **Price:** Free

**Link:** https://repairpal.com

**Tags:** websites, engineering-manufacturing, automotive

## Books

### 1. Automotive Engines: Diagnosis, Repair, and Rebuilding

**Author:** Tim Gilles

Automotive technology textbook covering engine theory, diagnosis of mechanical problems, disassembly, measurement, machining, and reassembly. Readers come away able to trace noises, compression loss, and oil consumption to their causes and carry out a complete engine rebuild.

**Difficulty:** Intermediate | **Language:** English | **Price:** Paid

**Link:** https://www.amazon.com/dp/1418009636?tag=edmonddante07-20

**Tags:** books, engineering-manufacturing, automotive

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