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21/05/2019

What do injector sleeves do?

What do injector sleeves do?

Sleeves can vary in material they are made from but serve the same basic purpose. The sleeve allows water from the cooling system to flow around the sleeve to help cool the injector. A cracked sleeve in some engines can allow fuel to enter the cooling system. Sleeves can also allow coolant or oil to enter the cylinder.

Does the 6.0 have injector cups?

Injector cups are a very vital part of the internal workings of a Powerstroke diesel engine, whether it is a 6.0L or a 7.3L. The injector cup seals the cooling system from the injector inside the cylinder head.

How long does it take to replace injector cups?

When replacing the injector cups with specialty tools from Ford, the repair generally takes up to 25 hours because the cylinder heads have to be removed. With these tools, the repair will take about 5 to 6 hours.

Why do injector cups go bad?

heating cycles will cause the Loc-Tite to degrade and lose its’ sealing properties…but they are usually ‘good’ for a couple hundred thousand miles. OVER-heating (run out of coolant & overheat the cyl head) is another way to cause the cup/sealant to fail…as well as just normal metal fatigue.

What are the symptoms of bad fuel injectors?

Dirty Fuel Injector Symptoms

  • The Engine Misfires. Dirty fuel injectors may cause your vehicle’s engine to misfire.
  • Idling Gets Rough. Does your vehicle sputter and shake when you’re at a stop sign or sitting in traffic?
  • Your Gas Mileage Tanks.
  • The RPM Needle Starts to Dance.
  • Your Car Won’t Start.

What should be done after installing a new copper injector sleeve?

Copper sleeves need to be reamed after installation; stainless steel sleeves do not. It is not a requirement to apply heat to either sleeve type during this procedure. 17.

When should you replace injector cups?

A question I’m asked frequently by my fellow diesel engine techs is, “When do I replace the injector cups?” There are only two situations when the cups need to be replaced. One is if, for some reason, the inside surface of the cup that seals the O-rings of the injector becomes distorted or destroyed.