Don’t replace your common rail injectors …

Before you give the go-ahead for a new set of common rail injectors, your first move should always be to restore full cleanliness and fortify injector lubrication. This determines which injectors, if any, really need replacing — and using CRD Fuel Enhancer lets you do exactly that.

Short answer: in over 80% of cases, common rail injectors don’t need replacing — they just need cleaning. Most injector faults are caused by deposits and poor lubrication, not damage. Clean them with CRD Fuel Enhancer and re-test before spending thousands on replacements.

Just Been Told to Replace Your Common Rail Injectors?

Injectors can certainly malfunction, but that doesn’t mean they’re damaged. In fact, the main problem with injectors is that they become fouled with deposits — either from dirty fuel, or created by the extremely high pressure, high temperature and fine clearances of the common rail circuit.

Around 80–90% of the fuel is used just to cool the injectors, and is continually recirculated — which can result in a loss of lubrication and poor injector response. CRD Fuel Enhancer restores pristine cleanliness and strong lubrication to maintain precise injector response.

CRD Fuel Enhancer will correct over 80% of injector feedback values. Even values outside the +5/-5 range have returned to within +1/-1. Injectors with values that still indicate problems after treating with CRD Fuel Enhancer need only then be replaced.

Injector feedback values outside +5 / -5 have returned to within +1 / -1 after treatment — correcting over 80% of cases.

Why Replacing Injectors Often Only Treats the Symptom

You can replace poor-performing injectors and the problem disappears — but the cause (deposits and poor lubrication) still exists, and will likely re-occur. So replacement only treats the symptom. Proper corrective and preventative maintenance with CRD Fuel Enhancer addresses the root cause and eliminates the need to replace most injectors, while maintaining optimal injector performance for a very long service life.

Replacing injectors might be a mechanic’s response to injector rattle, a diagnosis of injector feedback values, or because someone topped up the diesel tank with petrol — or it may even be just “because they’ve now done 100,000km”.

Should You Replace Your Common Rail Injectors After 100,000km?

We’ve proved many times over that injectors just aren’t as delicate as originally thought — the mere act of restoring cleanliness and lubricity confirms their durability. The picture is a Scan Gauge reading from one of our customers, Norman Turner, on his Toyota Prado. Norm, an ex-postie from NSW, ran two Toyota Prados on his post run using CEM products — a total of 700,000km on the original injectors. Now retired, he still owns the second one, and at over 300,000km its fuel use averages just 6.1L/100km. Obviously, there’s no need to swap out his injectors yet!

This isn’t a one-off. See the same result on a Hilux D4D and a Toyota Troopy VDJ, and read more about how CRD Fuel Enhancer works.

For more information on restoring your common rail injectors, give the team at Cost Effective Maintenance a call on 07 3376 6188.

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