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BMK Injector Problems – Symptoms, Causes & Fixes

Engine: BMK 62 compatible injectors From £100

Common Injector Failures on the BMK

The BMK 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 62 tested replacement injectors for this engine from Bosch.

Vehicles fitted with the BMK include models from AUDI, Audi. 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 BMK 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.

BMK Injector Replacement Cost

Parts (per injector)

£100–£150

Labour

£150–£400

Total (per injector)

£250–£550

Full replacement cost guide

Compatible Injectors for the BMK62 found

Most Common Injector Part Numbers for BMK Engine

Related Cross Reference Numbers for BMK

Vehicles Using the BMK Engine

Related Engine Codes

Frequently Asked Questions

What are common injector problems on the BMK engine?
The BMK engine commonly suffers from injector seal failure, nozzle wear causing poor spray patterns, and back-leak issues. Symptoms include rough idle, black or white exhaust smoke, hard starting, and increased fuel consumption. These issues typically appear after 100,000–150,000 miles.
How much does it cost to replace injectors on a BMK engine?
A remanufactured injector for the BMK engine typically costs £100–£150 per injector. Labour adds £150–£400 depending on accessibility. We found 62 compatible injectors for this engine.
Which vehicles use the BMK engine?
The BMK engine is found in vehicles from AUDI, Audi. Common models include AUDI A1, AUDI A4, AUDI A6, Audi A4, Audi A6.
How do I test the injectors on a BMK engine?
Perform a leak-off test by connecting clear hoses to each injector return line and comparing fuel volumes at idle. You can also check injector correction values with a diagnostic scan tool or measure electrical resistance with a multimeter.

Injector Compatibility Checker

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Need a Replacement BMK Injector?

We stock 62 tested replacement injectors for the BMK engine. All remanufactured, bench-tested, and supplied with a 12-month warranty.