In November 2005, Isuzu filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Fuel Injection System, covering the MU, Wizard. The filing affects 11,191 vehicles manufactured between March 16, 1998 and October 30, 2001.
Overview
| MLIT filing number | 1212650 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | November 4, 2005 |
| Manufacturer(s) | Isuzu |
| Component | Fuel Injection System |
| Production period | March 16, 1998 — October 30, 2001 |
| Vehicles affected | 11,191 units |
Filing in context
The Fuel Injection System is the most frequently cited component category in this archive, appearing in 23 of its 4,890 filings. This filing is one of 44 Isuzu notifications from 2005 in this archive. For scale, 1,556 of the 4,890 filings in this archive report a larger number of affected vehicles; the vehicles involved here were manufactured over a span of about 3 years and 7 months.
Defect
In the fuel injection system, improper assembly of the injectors during the manufacturing process left excessive clearance between the plunger and barrel on some units. This causes the O-ring to deform and sustain damage, losing its seal. Diesel fuel then mixes into the engine oil. Continued operation in this condition increases the oil volume in the oil pan; the diesel-contaminated oil is then drawn through the blowby hose into the intake manifold, causing engine speed to rise uncontrollably.
Corrective action
All vehicles: replace the injectors with conforming units. Because parts supply will require time, an interim measure is in effect: inspect all vehicles for diesel fuel contamination in the engine oil. On vehicles with confirmed leakage, replace the injector immediately with a conforming unit. On vehicles with no leakage, explain the periodic inspection procedure to the owner and schedule injector replacement at a later date.
Affected models & chassis ranges
This filing lists 2 type code(s). A vehicle is affected if its chassis number falls within one of the ranges below.
| Type code (型式) | Model | Chassis ranges |
|---|---|---|
| KH-UES73EW | ＭＵ | UES73EW-4100076 — UES73EW-4115460 |
| KH-UES73FW | ＷＩＺＡＲＤ | UES73FW-4100080 — UES73FW-4117364 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
原動機の燃料噴射装置において、インジェクタの組立て工程が不適切なため、プランジャとバレルの隙間が大きいものがあり、オーリングが変形、損傷して機密性が損われ、燃料の軽油がエンジンオイルに混入するものがある。そのため、そのままの状態で使用を続けると、オイルパンの油量が増大し、ブローバイホースを経由して吸気管に軽油の混入したオイルが吸入され、原動機の回転が上昇するおそれがある。
改善措置
全車両、インジェクタを良品と交換する。 なお、部品の供給に時間を要することから、当面の暫定措置として、全車両、オイル中への軽油混入を点検し、漏れているものは良品と交換し、漏れていないものは、定期的な点検方法を説明し、後日良品と交換する。
Source & verification
This entry reproduces public data from Japan's MLIT recall registry. English text is jdmvin.com's own translation; always verify against the official source:
https://renrakuda.mlit.go.jp/renrakuda/ris-detail-car.html?class=recalldatacar&id=3006206
Related recalls
Same manufacturer, same component
Other Isuzu filings involving the Fuel Injection System, closest to this one by filing date.
Fuel Injection System — affects 12,595 vehicles.
Open recall detail →Fuel Injection System — affects 9,124 vehicles.
Open recall detail →Fuel Injection System — affects 9,412 vehicles.
Open recall detail →Fuel Injection System — affects 11,328 vehicles.
Open recall detail →Fuel Injection System — affects 9,757 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Wiring — affects 7,673 vehicles.
Open recall detail →Engine Assembly — affects 10 vehicles.
Open recall detail →Wiring — affects 1,232 vehicles.
Open recall detail →Wiring — affects 1,045 vehicles.
Open recall detail →Steering Linkage — affects 17,183 vehicles.
Open recall detail →