Question:

“I have a yellow check engine light, the car smokes, starts poorly and shakes at idle. The tester shows injection errors. Is it the fuel injectors?”

Our answer:

Yes – very often such symptoms indicate worn or damaged fuel injectors (common rail). Pouring, clogged or unevenly running injectors cause smoke, loss of power, higher combustion and controller errors. In practice, it is necessary to verify and often replace the injectors – you can find new or regenerated injectors for trucks at Arcoore.

Symptoms that the driver sees

• yellow check engine light,
• difficult cold starting,
• uneven operation at idle,
• noticeable jerking when accelerating,
• smoke (white, gray or black smoke),
• noticeably increased combustion.

What does the tester report?

• “cylinder contribution/balance” errors ,
• “injection quantity/timing fault” errors,
• abnormal pressure values on the common rail strip,
• differences in dosage between cylinders.

The most common causes

• wear of injector tips (scattered droplets instead of proper atomization),
• Funneling injectors, which give too much fuel,
• clogged injectors (dirt, poor fuel quality),
• electrical (coils) or mechanical (needle) damage.

What to replace usually?

• fuel injectors (usually a set on the axle/engine),
• if necessary, components of the high-pressure pump or regulator,
• gaskets under the injectors (blowouts cause additional problems).

What does Arcoore offer?

Arcoore can provide:

• fuel injectors for trucks – new or regenerated (depending on the offer and references),
• accompanying components for the common rail system,
• support in the selection of parts by OE number and engine symptoms.

Professionally selected injectors solve the problem of smoke and uneven operation, and at the same time protect the DPF and turbo from excessive load of unburned fuel.

FAQ