30/06/2026
🚙 2008 Toyota Hilux 1KD-FTV – Rough Idle & Misfire Diagnosed and Repaired 🔧
A customer recently returned to Cairns after an unforgettable Cape York adventure when their 2008 Toyota Hilux Dual Cab (1KD-FTV) developed a rough idle and persistent misfire.
Initially suspecting a faulty MAF sensor, the customer replaced it themselves, however the problem remained. That's when they contacted Pit Diesel Solutions to accurately diagnose the fault.
Using our diagnostic equipment, we carried out a complete engine assessment including:
✅ Retrieved and reviewed historical and pending fault codes (P1238 – Injector Malfunction)
✅ Analysed live engine data including fuel rail pressure, MAP sensor, MAF sensor, coolant temperature and engine RPM
✅ Checked injector feedback values, identifying Injector #4 with a correction value of +5.0, indicating severe over-fuelling
✅ Performed cylinder cut-out testing which confirmed Cylinder #4 was contributing little to no power
✅ Verified injector harness power supply and wiring integrity before mechanical disassembly
Following further inspection, we removed the injectors and discovered the failed #4 injector, with its sealing washer also seized in the cylinder head.
Considering the vehicle's age, injector balance readings and the customer's remaining holiday travels, the best long-term solution was to replace all four genuine fuel injectors.
The repair included:
🔧 Installation of 4 new fuel injectors
🔧 New injector sealing washers and return line seals
🔧 Cleaning injector seats and replacing rocker cover seals
🔧 Programming all injectors into the ECU
🔧 Verifying injector feedback values
🔧 Cylinder cut-out testing to confirm correct operation
🔧 Clearing and confirming no active or pending fault codes
🔧 Final road test
The result? ✅ Smooth idle, restored engine performance and another Toyota ready to continue its journey with confidence.
At Pit Diesel Solutions, we don't guess—we diagnose. Accurate fault finding saves time, money and unnecessary parts replacement.
If your diesel vehicle is suffering from rough idling, misfiring, excessive smoke or engine performance issues, contact our team for professional diagnostic and repair services.
📍 22 Knight Street, Portsmith, Cairns
📞 0400 931 587
🌐 Visit us at www.pitdieselsolutions.com.au
Pit Diesel Solutions – Professional Diesel Diagnostics. Quality Repairs. Reliable Service.