What can dirty injectors do to your engine?

Cause Idle Problems – misfires at idle, lumpy idle, inconsistent idle speed.

Limit Maximum Power – In some cases, dirty injectors can cause the air fuel ratio to vary across your cylinders to the point of limiting the maximum power your engine can produce.

Cause Engine Damage – In very extreme cases, you can have a cylinder lean-out to the point of piston damage.  This is a rare and extreme case, but it can happen.

What do you need to know?

New injectors should flow within 0.5% of each other.

Cleaned electronic fuel injectors should flow within 2-3% of each other, MAX.  Anything above 3% means you may experience one or more of the symptoms above.  They really should be within 1% for any serious performance application.

You must also ensure your set of injectors all have the same spray pattern, as you might have injectors that all flow within 2% of each other, but you may have 1 injector that has a bad spray pattern.  Putting this injector into your engine will probably mean you might at least have rough idle.

The bottom line is, that if you want to get the most out of your engine, you must ensure you have a good set of clean injectors.
Look at it this way: If you have 4 tires on your car, and 3 of them are inflated to 36PSI, but one of them is inflated to 29PSI, you could not expect your car to handle nearly as well as when all of the tires are inflated to 36PSI.

Cleaning a set of injectors generally only cost between $100 and $200, so it is very cheap insurance when you consider the amount you may spend on your vehicle to modify it.

PS: If we can point you in the right direction to get your current set of injectors cleaned, or if you are after a set of new injectors, contact us at wolfemail@wolfems.com.au .