🚗 Classic Fault — Ford (1980–1990)
Escort Mk4 EFI injector O-ring leak
💰 Estimated Repair Cost
$10 – $40 GBP
Parts and labour estimate
🔧 Tools Required
Injector O-ring kit
📋 Overview
Fuel injector O-rings harden and crack on older Mk4 Escorts, causing fuel leaks at the injector body.
🩺 Symptoms
- Petrol smell in engine bay
- rough idle
- fire risk
- black sooty deposits around injector body
🔍 Possible Causes
- Hardened injector O-rings
- cracked injector body
- loose injector retaining clip
🛠️ Diagnosis Steps
With engine running, sniff around each injector — fuel smell localised to injector body indicates O-ring failure
✅ Most Confirmed Fix
Injector O-ring replacement
93% of users confirm this fix worked (35 reports)
🩺 Related Symptoms
🔗 Other Ford Faults
Own a Ford ?
Share your experience with this fault — or report a different issue. Your knowledge helps other classic car owners worldwide.