What happens when injector cups go bad?
The injector cup seals the cooling system from the injector inside the cylinder head. When the injector cup fails, you will no longer have a seal between the fuel system and the coolant system. Because of the higher pressure of the fuel system, the fuel goes into the coolant.
What causes injector cups to fail?
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.
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.
Can you drive with bad injector cups?
If the injector O-rings are leaking it takes additional cranking to get HP oil pressure up to the required 500 psi, especially with a hot engine and thinner oil. Once running, unless the O-rings are totally gone, it’ll run OK. But probably won’t start at all if the leaks are too bad.
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.
What is an injector sleeve?
The diesel injector sleeve (a.k.a. fuel injector sleeve) seals and protects the injector in the cylinder head, separating the fuel system from the cooling circuit.
What are injector sleeves made of?
Note: There are two types of injector sleeves used in Mack engines, conical and flat copper. The conical sleeves are made of stainless steel. A washer is used with the flat copper sleeves. You must determine which type of sleeve is in the engine to know the proper tools to use for the replacement procedure.
What happens if the injector Cup fails on a 6.0L diesel?
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. When the injector cup fails, you will no longer have a seal between the fuel system and the coolant system.
What was the torque of a 1974 DT466 diesel?
This is what the power and torque graph looked like for a 1974 era DT466 engine used in construction equipment. This engine was rated for 210hp at 2800 rpm and 468 lb-ft at 1900 rpm up to 10,000 feet. Compression ratio was 15.5:1 and the engine weighed in at 1,477 lb.
Where can I get an injector Cup for my Powerstroke?
If you do not have a Ford dealer that has one in stock, sometimes you can get them from International, but you’ll have to twist their arm to look it up for you because they don’t like to sell parts for Fords. You will also need the removal tool and the installation/driver tool. With the removal tool, you thread it down into the cup.
When was the DT466 diesel added to Loadstar?
Later in the year, it became available in the Cargostar (COE) and Paystar. The DT466 was added to the Loadstar options list in the summer of 1976 as a premium upgrade over the naturally aspirated D150, D170 and D190 9.0L V8 diesels. The DT466 was more powerful, economical and reliable than the big V8 diesels and it could be overhauled in chassis.