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REMANUFACTURED INJECTORDiesel Fuel Injectors
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12-Month Warranty
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CYFA Injector Problems – Symptoms, Causes & Fixes

Engine: CYFA 7 compatible injectors From £90

Common Injector Failures on the CYFA

The CYFA 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 7 tested replacement injectors for this engine from Bosch, Siemens.

Vehicles fitted with the CYFA include models from Ford. If you are experiencing any of the symptoms below, your injectors may need testing or replacement.

Symptoms of Injector Failure

Black Smoke
White Smoke
Rough Idle
Hard Starting
Engine Knock

Related Fault Codes

P0201P0202P0203P0204P0263P0266P0269P0087P0089P0300

How to Test CYFA 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.

Complete Testing Guide Leak-Off Test Guide

CYFA Injector Replacement Cost

Parts (per injector)

£90–£100

Labour

£150–£400

Total (per injector)

£240–£500

Full replacement cost guide

Compatible Injectors for the CYFA7 found

0445110188
0445110188Bosch
£90.008923423466
8923423466Siemens
£100.00765C591356
765C591356Siemens
£100.00100054325
100054325Bosch
£100.00664378392
664378392Siemens
£100.000445115025
0445115025Bosch
£100.0032475294386
32475294386Bosch
£100.00

Most Common Injector Part Numbers for CYFA Engine

242465142
242465142Bosch
£180.90114 vehicles
77652525
77652525Bosch
£161.9091 vehicles
7348563
7348563Bosch
£169.9066 vehicles
59527053
59527053Bosch
£220.9061 vehicles
7897987733
7897987733Delphi
£120.0015 vehicles
4902297464
4902297464Delphi
£120.0014 vehicles
8923423466
8923423466Siemens
£100.0012 vehicles
664378392
664378392Siemens
£100.0010 vehicles

Related Cross Reference Numbers for CYFA

04451101360445110188044511502504451150920986435090098643535109864354501980H3

Vehicles Using the CYFA Engine

Ford FUSIONCYFA
Ford FOCUSCYFA
Ford MONDEOCYFA
Ford GALAXYCYFA
Ford TRANSIT CONNECTCYFA
Ford S-MAXCYFA

Related Engine Codes

4HK 4HN 4HP 4HR 4HS 4HT

Frequently Asked Questions

What are common injector problems on the CYFA engine?
The CYFA 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 CYFA engine?
A remanufactured injector for the CYFA engine typically costs £90–£100 per injector. Labour adds £150–£400 depending on accessibility. We found 7 compatible injectors for this engine.
Which vehicles use the CYFA engine?
The CYFA engine is found in vehicles from Ford. Common models include Ford FOCUS, Ford FUSION, Ford GALAXY, Ford MONDEO, Ford S-MAX.
How do I test the injectors on a CYFA 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 CYFA Injector?

We stock 7 tested replacement injectors for the CYFA engine. All remanufactured, bench-tested, and supplied with a 12-month warranty.

View All InjectorsReplacement Cost Guide Call 020 3355 6581