HHJD Injector Problems – Symptoms, Causes & Fixes
Common Injector Failures on the HHJD
The HHJD engine uses high-pressure common rail diesel injection. Over time, injector nozzles wear, seals degrade, and internal components lose calibration. This leads to a range of drivability symptoms that worsen if left unaddressed. We stock 1 tested replacement injectors for this engine from Bosch.
Vehicles fitted with the HHJD include models from Citroen, Fiat, Ford, Mazda. If you are experiencing any of the symptoms below, your injectors may need testing or replacement.
Symptoms of Injector Failure
Related Fault Codes
How to Test HHJD Injectors
Leak-off test: Connect clear hoses to the injector return lines and compare fuel volumes at idle. The injector returning the most fuel is likely worn.
Correction values: Use a scan tool to read injector correction (IMA) values. Readings beyond ±3 mg/stroke indicate wear.
Resistance check: Measure resistance across the injector connector pins with a multimeter. Compare to manufacturer specs.
HHJD Injector Replacement Cost
Parts (per injector)
£80–£80
Labour
£150–£400
Total (per injector)
£230–£480
Compatible Injectors for the HHJD1 found
Most Common Injector Part Numbers for HHJD Engine
Related Cross Reference Numbers for HHJD
Vehicles Using the HHJD Engine
Related Engine Codes
Frequently Asked Questions
What are common injector problems on the HHJD engine?
How much does it cost to replace injectors on a HHJD engine?
Which vehicles use the HHJD engine?
How do I test the injectors on a HHJD engine?
Injector Compatibility Checker
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Need a Replacement HHJD Injector?
We stock 1 tested replacement injectors for the HHJD engine. All remanufactured, bench-tested, and supplied with a 12-month warranty.