Do you know how many fuel injector has on the 7.3 liter diesel engine? If your answer is no then I must tell you 8 engine remains on a 7.3 liter diesel engine. My next question is do you know How to test 7.3 powerstroke injectors? If your answer is no then I must tell you to read our below given steps to know How to Check the Injectors on a 7.3L diesel engine.

Do you know what can happen due to improper fuel distribution?

Improper fuel distribution can be the reason for loss of power, triggering of engine codes or mechanical failure. So it is important for you to test the 7.3 powerstroke injectors after driving your vehicle for certain kilometer so that you can identify the failure of fuel injectors in a early stage which will provide you prevention against costly repair which is associated with  too rich or too lean combustion conditions.

Read our similar article – Best 7.3 injectors

How to test 7.3 Powerstroke injectors

Today we are going to share with you the 5 different ways to test 7.3 powerstroke injectors. At first starting with how to test Injector Valve, Secondly we are are going to describe how to test the fuel injector wire voltage, Thirdly we are going to describe how to test the fuel injector resistance, Fourthly we are going to describe how to test fuel pressure regulator, fifthly we are going to describe how to test fuel injector leaks.

How to test Injector Valve

How to test the fuel injector wire voltage

How to test the fuel injector resistance

How to test fuel pressure regulator

How to test fuel injector leaks

5 common symptoms of faulty diesel fuel injectors

Starting problem – If your diesel fuel injectors is faulty then it will create starting problem specially in cold weather. So if you face starting problem in your 7.3 diesel engine then check the fuel injector quickly.

Misfire – If your diesel engine starts misfiring then you should understand that its happening due to lack of fuel injection or a lack of combustion chamber heat.

Smell of fuel – If you are getting the smell of diesel from the vehicle’s cabin then you must understand the diesel has a leak somewhere which may be happening due to faulty injectors which allows fuel to flow out of the injector when it isn’t active.

Dirty smoke – Damage injectors can be the reason for incomplete fuel burn for which it releases white smoke from the exhaust pipe.

Poor mileage per gallon – We all know that faulty injectors burn more fuel compared to good fuel injector. So if you driven more than 100000 miles without changing your fuel injector then immediately change it to get better mileage per gallon.

how to test 7.3 Powerstroke injectors


So if you have read the above 5 different procedure of how to test 7.3 Powerstroke injectors then I think you do not need to take any one’s help for testing the 7.3 powerstroke injectors. You can do the task by yourselves only.

How do you tell if your 7.3 needs injectors?

If you find starting related problem, misfire, smell of fuel, dirty smoke or if you get poor mileage then you should understood that you need new 7.3 injectors.

What fails on a 7.3 injector?

The most common failure we see is when oil residue builds up inside the of the injector and causes the spool valve to move slowly or stick which is known as stiction. 

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