🚗 Classic Fault — Lotus Esprit (1976–1987)
Lotus Esprit Turbo wastegate actuator failure
💰 Estimated Repair Cost
$30 – $150 GBP
Parts and labour estimate
🔧 Tools Required
Vacuum pump, boost gauge
📋 Overview
The wastegate actuator diaphragm on Turbo Esprits tears, causing either overboosting or no boost.
🩺 Symptoms
- Overboost with knock
- or conversely no boost at all
- boost gauge erratic
🔍 Possible Causes
- Torn wastegate actuator diaphragm
- seized wastegate valve
- disconnected boost pipe
🛠️ Diagnosis Steps
Check actuator diaphragm by applying pressure — should hold. Check wastegate moves freely.
✅ Most Confirmed Fix
Wastegate actuator replacement
82% of users confirm this fix worked (16 reports)
🔗 Other Lotus Esprit Faults
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