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GDI Seal Replacement
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By Dorman Products
Cost-effective replacement intake manifold for Ford Coyote 5.0s | Dorman OE FIX 615-916
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By Counterman
On modern vehicles, overheating is a rare occurrence thanks to high-quality hoses, thermostats and better engine management. Unfortunately, the weak point is still the coolant. Whether it’s a 100,000-mile or 150,000-mile coolant, eventually it will break down and lose the ability to protect the components with which it comes into contact.
Coolant at 100,000 miles may look the same as coolant with zero miles, as the real difference between good and bad coolant can’t be seen with the naked eye; it is in the chemistry and based on mileage.
Coolant contains additives called buffers that keep it at a neutral pH but these buffers are meant to last forever. When these chemicals become depleted, the pH can’t be controlled. It rises dramatically in a short period of time the moment the buffers are fully depleted. This is why replacing the coolant at the recommended interval is critical.
Coolant has two specifications that can be used to justify replacement — the condition of the additive package and the freezing point.
The additive package is the secret sauce for a coolant. Its main function is to control corrosion. Other components of the additive help with heat transfer and cavitation reduction. Some additive packages use seal conditioners to extend the life of the gaskets and plastic carriers.
The freezing point is measured by the overall specific gravity of the coolant, which has a direct relationship to the coolant/water mixture. This test can help spot coolant that has been compromised by the owner topping off with water. This measurement works well on systems that do not have pressurized reservoirs.
The strength or freezing point of coolant can be measured with a simple hydrometer. This device uses a calibrated float or plastic balls (not as accurate) to show the specific gravity of the coolant. This, in turn, shows how much freezing/boiling protection the coolant offers. You must remember to compensate for temperature because the specific gravity (density) of the coolant is lower when the coolant is hot.
The more professional tool for this purpose is an optical refractometer because it is very accurate and automatically compensates for temperature. Be aware: these are not simple, inexpensive tools. A refractometer can cost up to $300 or more because of the precision optics in its lens. Ethylene glycol (EG) and polyethylene glycol (PG) antifreeze have slightly different densities, so you have to use a hydrometer or refractometer with the appropriate scale (or one with a dual scale) for accurate test results.
Color-coded chemical test strips that are dipped into the coolant can be used to quickly and easily reveal the condition of the coolant. These strips of coated capillary paper react to the presence of certain dissolved minerals in the coolant and change color to give a good, marginal or bad indication of the coolant’s pH condition. Some test strips also show the concentration of antifreeze in the coolant.
The added benefit of test strips is that the results can be shared with the owner by attaching the used strip to the inspection form.
But, mileage is the gold standard for any coolant replacement recommendation. Engineers and chemists spend a lot of time formulating the coolant to match the engine and interval.
If you are performing a water pump, heater core or hose repair, recommend a full coolant flush. Just topping off the coolant can lead to a mixed bag when measuring the pH and freezing point. Also, check the specific gravity before a repair. Many customers know how to top off their coolant with water that could dilute the coolant concentration.
Selling any fluid maintenance service is difficult these days. But, if you document and educate customers on the importance of coolant, it becomes more than just an “add on” service.
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By Dorman Products
Cost-effective replacement intake manifold for Ford Coyote 5.0s | Dorman OE FIX 615-916
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By Counterman
GB Reman announced the release of 17 gasoline-direct-injection (GDI) part numbers including GDI injectors, seal kits, fuel lines and a premium GDI seal-replacement tool kit.
The additional part numbers enhance GB Reman’s remanufactured GDI program with added coverage for more than 2,300 unique vehicle applications and more than 24 million vehicles in operation.
“We are very proud of this release, especially with the highly anticipated expansion of our industry-leading GDI program,” said Joe Evert, director of engineering & operations. “Our commitment to quality is the cornerstone of our GDI program’s popularity. We take great pride in delivering top-notch products, rigorously tested to ensure superior performance and backed by a stellar warranty for peace of mind. Our team of experts and our dedication to excellence sets us apart, making GB Reman the trusted choice for those who demand the best in performance, reliability and customer service.”
GDI Fuel Injectors & Seal Kit
GB Reman’s line of remanufactured fuel injectors are remanufactured using a proven 15-step process at its state-of-the-art facilities in Long Beach, California, according to the company.
All injectors include new external seals, O-rings and filters. In addition, all GDI injectors include pre-installed combustion fuel-inlet seals and necessary hardware to ensure a complete and trouble-free installation.
Once remanufactured, each injector is 100% tested under multiple operating conditions to ensure it meets or exceeds OEM specifications for flow rate, spray pattern, coil resistance, form, fit and function.
View the company’s
link hidden, please login to view for a complete list of part numbers and application data. GDI Fuel Injector Multi-Packs
GB Reman released two GDI fuel-injector multi-packs (PNs: 835-11156PK, 835-11158PK) covering 495 unique vehicle applications and more than 6 million vehicles in operation.
Replacing GDI injectors in sets ensures balanced performance, consistent fuel atomization, and prevents drivability issues by maintaining uniformity across all cylinders. While it may involve a higher initial cost, replacing injectors in sets promotes cost-effectiveness in the long run by reducing the likelihood of future repairs and optimizing overall vehicle longevity.
GDI Fuel Lines
GB Reman released six GDI fuel lines (PNs: 892-001, 893-001, 893-002, 893-003, 895-001, 895-002) covering more than 1,000 unique vehicle applications and more than 9 million vehicles in operation.
GDI fuel lines are responsible for delivering pressurized fuel from the fuel tank to the GDI injectors located near the combustion chamber of each cylinder. They play a crucial role in ensuring that the engine receives the right amount of fuel at the right pressure for efficient combustion. The fuel lines are designed to withstand the high operating pressures associated with GDI systems, which can be significantly higher than those in traditional port fuel-injection systems.
Premium GDI Seal Tool Kit
GB Reman released its new premium GDI seal tool kit (PN: GBTK-0001). The tool kit can be utilized to reseal more than 100 unique GDI injectors, covering more than 70 million vehicles in operation, according to the company.
As part of any GDI injector replacement procedure, all injectors on the fuel rail must have their injector seals replaced. While replacing GDI combustion seals is not technically challenging, proper tools and procedures are necessary to ensure that the seals function properly. For
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