🚗 Classic Fault — Ford (1980–1990)
Escort Mk3 XR3i K-Jetronic fuel distributor wear
💰 Estimated Repair Cost
$100 – $350 GBP
Parts and labour estimate
🔧 Tools Required
CIS test kit, fuel pressure gauge
📋 Overview
The K-Jetronic fuel distributor on the XR3 and XR3i wears internally and causes uneven cylinder fuelling.
🩺 Symptoms
- Rough idle
- one or two cylinders misfiring
- poor power
- difficult to tune
- rich or lean on individual cylinders
🔍 Possible Causes
- Worn fuel distributor plunger
- dirty fuel distributor
- failing fuel accumulator
🛠️ Diagnosis Steps
Test each injector delivery quantity — should be within 5% of each other. Differential pressure regulator may also need testing
✅ Most Confirmed Fix
Fuel distributor reconditioning or replacement
70% of users confirm this fix worked (15 reports)
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