International · Fuel Injection Quantity (Multiple Cylinders)High

International SPN 5357 FMI 0: Fuel Injection Quantity Error

SPN 5357 FMI 0 (FMI 0) — Engine Fuel Injection Quantity Error for Multiple Cylinders - Data Valid But Above Normal Operational Range - Most Severe Level

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Quick Answer

SPN 5357 FMI 0 means multiple cylinders on an International A26 are receiving more fuel than commanded. It's a High severity fault - check shared rail pressure before assuming individual injectors have failed.

Overview: International SPN 5357 FMI 0

ProfessionalDieselRepair.com treats multi-cylinder fuel quantity codes the same way we treat multi-cylinder misfire codes - look at what's shared across those cylinders before isolating down to any single injector.

Repair Snapshot

Time

2 - 6 Hours

Difficulty

Advanced

Parts Cost

$150 - $2,800

Dealer Labor

$900+

Tools Required

  • OEM Diagnostic Software
  • Fuel Pressure Gauge
  • Diesel Laptops JPRO
  • Snap-on NEXIQ USB-Link

What SPN 5357 FMI 0 Means

SPN 5357 FMI 0 on an International A26 means the ECM detects that multiple cylinders are receiving more fuel than commanded. This points to a shared fuel system issue rather than a single injector, and it typically causes rough running, excessive smoke, and reduced fuel economy.

Symptoms Drivers Notice

  • Rough idle with a noticeable shake through the cab
  • Excessive black or white smoke depending on which cylinders are over-fueling
  • Reduced fuel economy despite normal driving habits
  • Check engine light, sometimes with individual cylinder trim codes alongside it

Most Likely Root Causes

Fuel rail pressure running above commanded target

Common

A mechanical/hydraulic fault affecting the shared rail - excess pressure pushes more fuel through every injector on that circuit simultaneously.

Stuck-open fuel pressure regulator or relief valve

Common

A mechanical component failure that directly causes the rail overpressure driving multi-cylinder over-fueling.

Worn injectors on specific cylinders allowing excess flow

Occasional

A genuine mechanical wear issue isolated to particular injectors rather than a shared rail problem.

Fuel pressure sensor circuit fault causing incorrect ECM fueling commands

Rare

An electrical/sensor issue where inaccurate pressure feedback causes the ECM to over-command fuel delivery.

Common Misdiagnoses (Don't Waste Parts)

Replacing multiple injectors before checking rail pressure against commanded target

Why it happens: Over-fueling feels like an injector-specific problem.

Do this instead: This is a parts-cannon approach for a multi-cylinder code - verify rail pressure and the regulator/relief valve first, since a shared hydraulic issue is a common and cheaper cause.

Assuming heavy smoke always means a turbo or air intake problem

Why it happens: Smoke is commonly associated with boost issues.

Do this instead: Check fuel delivery quantity data first when this specific code is present - it directly points to a fueling issue rather than an airflow problem.

Master Tech Commentary

Mechanic's Notes

ProfessionalDieselRepair.com note: check rail pressure against commanded target before pulling injectors on this one. An over-pressurized rail affecting multiple cylinders at once is a cheaper fix than a set of worn injectors and needs to be ruled out first.

Step-by-Step Diagnostic Procedure

  1. Step 1: Pull the full fault list with a scan tool to see which specific cylinders show fuel quantity errors alongside this multi-cylinder code.
  2. Step 2: Check fuel rail pressure in live data - pressure running above commanded target can cause multiple injectors to deliver more fuel than intended simultaneously.
  3. Step 3: Inspect for a stuck-open fuel pressure regulator or relief valve, since this affects fuel delivery to all cylinders on the shared rail.
  4. Step 4: Run individual injector flow or balance tests to see if the over-fueling clusters on specific cylinders or is spread evenly across the bank.
  5. Step 5: If pressure is confirmed normal but specific injectors are over-fueling, those individual injectors likely have worn internal components allowing excess fuel through.

Professional service / OEM-level scan tools are recommended before clearing this fault for good.

Live Data & Freeze-Frame Tips

Log fuel rail pressure against commanded pressure through an idle-to-load sweep. A rail that consistently runs above commanded target confirms a hydraulic overpressure issue rather than individual injector wear.

Safety Warnings

  • Relieve fuel system pressure before disconnecting any high-pressure fitting.
  • Keep an appropriate fire extinguisher nearby when servicing the fuel system.

When to Limp In vs Tow

Not usually necessary - the truck remains drivable, though expect rough running, excessive smoke, and poor fuel economy until the shared cause is identified and repaired.

Prevention Tips for Fleets & Owner-Operators

  • Keep fuel filtration current to protect the pressure regulator and injectors from contamination-related wear.
  • Address any early fuel pressure trend warnings before they progress to a hard fault.
  • Use quality fuel to reduce injector wear over time.

Related Fault Codes

SPN 1322 FMI 31 — Multiple Cylinder Misfire Detection

Multiple cylinder misfire, a related symptom that can accompany or result from significant fuel over-delivery.

SPN 157 FMI 0 — Fuel Rail Pressure

High fuel rail pressure, a common shared-system cause of a multi-cylinder over-fueling condition.

Frequently Asked Questions

Can I keep driving with SPN 5357 FMI 0 active?

Yes, generally, though expect rough running, smoke, and poor fuel economy. It's worth diagnosing soon since over-fueling can foul the aftertreatment system over time.

How do I reset this code without a scan tool?

A battery disconnect may clear it temporarily, but it returns on the next over-fueling event if the shared rail or regulator issue isn't fixed.

What triggers a derate from this code?

Severe or sustained over-fueling can trigger a protective power or fueling reduction to limit aftertreatment fouling and excess smoke.

Is this always an injector problem?

No - a stuck-open pressure regulator or relief valve affecting the shared rail is a common and cheaper cause than worn injectors.

How much does this typically cost to fix?

A regulator or relief valve repair runs $150-$600. If multiple injectors are confirmed worn, costs can climb toward $2,000-$2,800.

Why is my truck smoking so much with this code?

Over-fueling multiple cylinders means more raw fuel entering combustion than the engine can burn cleanly, producing excess smoke until the underlying pressure or injector issue is fixed.

More International codes on this system

All International fault codes

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