11 best injectors with caps

Injectors with caps, in the context of automotive fuel systems, refer to a specific type of fuel injector component used in internal combustion engines. These injectors are related to fuel injection, replacement parts, and are integral to the proper functioning of an engine's fuel system. Here's what you need to know about injectors with caps:

  1. Fuel Injection System: In an internal combustion engine, fuel is mixed with air and ignited to generate power. The fuel injection system is responsible for delivering the right amount of fuel to the engine cylinders for combustion.

  2. Fuel Injectors: Fuel injectors are components of the fuel injection system that spray fuel into the engine's combustion chambers in a precise and controlled manner. They are typically located near the intake valves.

  3. Function: Fuel injectors play a crucial role in ensuring efficient and optimal engine performance. They atomize the fuel, turning it into a fine mist, which allows for better combustion and power generation.

  4. Injectors with Caps: Injectors with caps refer to fuel injectors that come equipped with protective caps. These caps serve several purposes:

    • Protection: Caps protect the injector nozzle from contaminants such as dirt, dust, and debris, which could clog or damage the injector.
    • Sealing: The caps help create a tight seal around the injector nozzle, preventing fuel leakage and ensuring proper fuel atomization.
    • Identification: Some caps may have color-coding or markings that aid in identifying the type of fuel injector, making it easier for mechanics during installation and replacement.
  5. Types: Fuel injectors can come in various types, including:

    • Port Fuel Injectors (PFI): These injectors spray fuel into the intake manifold before it enters the engine cylinders.
    • Direct Fuel Injectors (GDI or DI): Direct injectors spray fuel directly into the combustion chamber, allowing for precise control over fuel delivery.
  6. Maintenance: Injectors with caps require regular maintenance to ensure they function correctly. This includes cleaning, inspecting for wear or damage, and replacing the caps if they become worn or cracked.

  7. Replacement: Over time, fuel injectors may become clogged or worn out. When this happens, they may need to be replaced. Injectors with caps can simplify the replacement process by ensuring a proper fit and sealing.

  8. Compatibility: It's essential to ensure that the replacement injectors with caps are compatible with your specific vehicle make and model, as there can be variations in injector design.

  9. Professional Installation: Replacing fuel injectors is a job best left to professionals, as it involves working with the fuel system and requires precise calibration to ensure proper engine performance and fuel efficiency.

In summary, injectors with caps are components of a vehicle's fuel injection system. They are responsible for delivering fuel to the engine's combustion chambers and can come equipped with protective caps to prevent contamination and ensure proper sealing. Regular maintenance and, if necessary, replacement of these injectors are essential to maintain the efficient operation of the engine and fuel system.

Below you can find our editor's choice of the best injectors with caps on the market
  

PQY Fuel Injector Rebuild Spare Parts Fuel Injector Repair Service Kits Micro Filter O-Ring Seals Caps + Removal Tool

Based on 5 reviews Check latest price

Product description

Application:

Universal.



Features and Benefits:

This kit contains one removal tool and 6 kinds universal spare parts (filters,O-rings,seals/spacers,pintle caps)

which apply to most commonly used injectors, such as: Bosch, Denso, Siemens,Weber,Delphi and Rochester.

O-ring using best material FKM VITON . This material resistant high temp, more than 200 degree. (100% Brand New Never Used Or Installed)



200 pcs for each kind,Total 1200 pcs which packed by a special transparent plastic collection case and classified.

Package Included:

200 x 101 type micro filter

200 x 203 type O ring- black color (FKM VITON material)

200 x 203 type O ring -brown color (FKM VITON material)

200 x 302 type green seal ring (size :13.2*11*1.3mm)

200 x 307 type spacer (size: 12.6*8.4*2mm)

200 x 308 type pintal cap (size: 12*8*6.5mm)

1 x removal tool

1 x plastic collection case





  • Universal spare parts (filters,O-rings,seals/spacers,pintle caps) Total 6 kinds and one removal tool included. Which apply to most commonly used injectors
  • 200 pcs for each kind,Total 1200 pcs which packed by a special transparent plastic collection case and classified.
  • Come with a black removal tool

User questions & answers

Question: What is the total weight of the box with 1200 pieces
Answer: The total weight is about 0.78kg.
Question: How much the weight of the case when charging
Answer: The weight of the case is about 310g .If you need ,we can change it to light carton box for you.
Question: Is it works for vegans or vegetarions
Answer: Should be work my wife she’s happy with it
Question: Are these made in the USA
Answer: No
Question: Is it completely biodegradable
Answer: It works beautifully! Made up of natural botanical ingredients to safely protect the scalp, moisturize hair, quickly foam, and rinse easily
Question: Does it function like liquid shampoo
Answer: Yes, deeply nourish the hair and scalp to repair damaged hair and control oil. Keep your hair strong, moisturized, antibacterial, keep your hair hydrated, and keep your hair soft and shiny. Pure natural plants ingredients without harmful chemicals for safe skin use, Give the hair a deep nourishment and mild care.

200-KIT) Fuel Injector Rebuild Service DIY Kit for UNIVERSAL EV1 Engines Injector O-Rings, Injector Spacers, Injector Retaining Pintle Caps, Injector Micro Basket Filters - BULK WHOLESALE 200pcs/box

Based on 26 reviews Check latest price

Product description

Application UNIVERSAL EV1 Engines

200 pieces each per order



Package Includes

101 type micro filter

203 type O ring- black color (FKM VITON material)

203 type O ring -brown color (FKM VITON material)

302 type green seal ring (size :13.2*11*1.3mm)

307 type spacer (size: 12.6*8.4*2mm)

308 type pintal cap (size: 12*8*6.5mm)



O-rings are manufactured using best material FKM VITON .

This material resistant high temp, more than 200 degree.



Note

No installation guides are included, we highly recommend to seek professional installation. Any damage during installation will not be refunded.



Will come with everything you see in the picture.



For any inquiries or special requests such as larger amount ordering please write to us.

  • Best Repair Kits on the Market by LicensePlateTags.com
  • Shipped from California USA, delivery usually takes 2-3 days
  • Using Viton Fluoropolymer O-rings, Pintle Caps, Micro Filters and Spacers
  • Includes all the pictured O-Rings, Micro /Basket Filters, Spacers, Retaining/Pintle Caps for 200 Injectors
  • Complete Service KIT Specifically made for UNIVERSAL EV1 Engines

User questions & answers

Question: what means universal ev1 engines?, which brand use this engines
Answer: This kit is a universal kit, I've used it on every brand that I've ran into so far

kweiny Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool

Based on 63 reviews Check latest price

Product description

Operation principle:

When the pressure of the common rail is too low to start the engine. One of the possible reasons is a defective diesel fuel injector returning excess fuel back to the tank. To identify the individual defective cylinder. You can remove the diesel fuel injection line from the cylinder, and use this block off tool instead of diesel fuel injection line to seal common rail pipe. If the engine can be started normally, and the common rail pressure return to normal value. It prove that the injector of this cylinder is malfunction.

If your scanner cannot perform certain tests. This diesel injector block off tool can also be used for diagnosing engine knocking sounds that could possibly be caused by a single cylinder issue.

In some situations, You may need several block off tools to test several injectors at the same time.



Compatibility:

2001-2005 6.6L Chevy/GMC Duramax and 2003-2007 5.9L Dodge/Cummins, Bosch diesel common rail system, and other vehicles with a 14mm fuel line nut;



Package include: 1 x Block Off Tool



Specification: M14 x 1.5mm



Material:Carbon tool steel, surface antirust.

  • Main Usage: Identification of faulty diesel fuel injectors and diagnosis of engine cylinder knocking sounds;
  • Compatibility: Fit with 2001-2005 6.6L Chevy/GMC Duramax and 2003-2007 5.9L Dodge/Cummins, Bosch diesel common rail system, and other vehicles with a 14mm fuel line nut;
  • Working principle: Block the fuel supply to the detected cylinder, and sealed diesel common rail pipe. Make the detected cylinder temporarily stop working;
  • Specification: M14x1.5mm internal thread nut;
  • Material: Carbon tool steel, surface antirust.

MOTOKU Fuel Injector Repair O Rings Basket Filter Spacer Pintle Cap Kit for V8 5.4L 4.6L Mercury

Based on 71 reviews Check latest price

Product description

You will get:

8x Spacers

8x Fuel Filters

8x Upper Viton O-Rings

8x Lower Viton O-Rings

8x Pintle Caps

  • Replace for Part Number: 0280150943 , 0280150909 , 0280150556
  • Brand New and High Quality and Fast Ships from USA
  • Before purchasing please check pictures provided for proper fitment.
  • Welcome to contact us if you have any questions, we give quick response...
  • These are Aftermarket Parts.

Friday Part Fuel Injector Cap/Block-Off Tool M14 14MM for 2001-2005 6.6L Chevrolet/GMC Duramax (LB7 & LLY) and 2003-2007 5.9L Dodge/Cummins

Based on 23 reviews Check latest price

Product description

Diesel Fuel Injector Cap / Block-Off Tool M14 14MM for 2001-2005 6.6L Chevrolet/GMC Duramax (LB7 & LLY) and 2003-2007 5.9L Dodge/Cummins

  • Diesel Fuel Injector Cap / Block-Off Tool M14 14MM for 2001-2005 6.6L Chevrolet/GMC Duramax (LB7 & LLY) and 2003-2007 5.9L Dodge/Cummins

TamerX 14mm Diesel Fuel Injector Cap/Block-Off Tool Set for 5.9L Dodge/Cummins (5 Pack)

Based on 9 reviews Check latest price

Product description

This package includes five Cap/Block-Off Tools.



The TamerX Diesel Fuel Injector Cap / Block-Off Tool for 5.9L Dodge/Cummins is a toolbox essential for everyone working on common rail Cummins fuel systems.



When a Cummins common rail engine fails to start, your first troubleshooting step should be to check fuel rail pressure. If the pressure is under 5,000 PSI (on a 5.9L engine), the most likely culprit is a defective diesel fuel injector returning excess fuel back to the tank. A return flow volume test will allow you to determine if excessive fuel return flow is the issue.



To identify the individual cylinder that is at fault, you will use this cap/block-off tool. The diesel fuel injection line is removed from one cylinder at a time and the cap is then installed on the fuel rail in place of each injection line. When the bad injector is blocked off, the fuel pressure at the rail will increase and your engine will start.



In some situations, it can be useful to have multiple block-off tools, because multiple diesel injectors returning a small amount of diesel fuel will display the same symptoms as an individual diesel injector returning an excessive amount of fuel.



The diesel injector cap tool can also be used for diagnosing engine knocking sounds that could possibly be caused by a diesel injector or a single cylinder issue, especially on engines where you can't use a scan tool or if a scan tool is unavailable.



This injector block-off tool is appropriate for the following applications:



MAKE: Dodge

ENGINE: Cummins 5.9L (Common Rail)

YEARS: 2003-2007



This tool will also work on other vehicles with a 14mm fuel line nut.

  • An essential tool for anyone who works on 5.9L Common Rail Cummins engines
  • Helps in identification of faulty diesel fuel injectors and diagnosis of engine knocking sounds
  • Free Shipping
  • This tool will also work on other vehicles with a 14mm fuel line nut

User questions & answers

Question: Do you sell a 6 pack for a 2011 Ram 6.9 cummins
Answer: 5.9 or 6.7 no you only need 5 in order to find out what injector or injectors that are bad! Hope this helps!!!
Question: What is the thread pitch on these
Answer: 1.50 hope this helps!
Question: Can the caps handle the psi at wide open throttle? my 5.9 smokes at wide open throttle
Answer: These caps are to block off the fuel rail. They will handle any pressure, the pressure is always there.

TamerX 18mm Diesel Fuel Injector Cap/Block-Off Tool for 2007-2017 Dodge/Cummins 6.7L (Individual)

Based on 24 reviews Check latest price

Product description

This package includes one Cap/Block-Off Tool



The TamerX Diesel Fuel Injector Cap / Block-Off Tool for 2007-2017 6.7L Dodge/Cummins Diesel is a toolbox essential for everyone working on common rail fuel systems.



When a common rail engine fails to start, your first troubleshooting step should be to check fuel rail pressure. If the pressure is under 5,000 PSI (on a 6.7L engine), the most likely culprit is a defective diesel fuel injector returning excess fuel back to the tank. A return flow volume test will allow you to determine if excessive fuel return flow is the issue.



To identify the individual cylinder that is at fault, you will use this cap/block-off tool. The diesel fuel injection line is removed from one cylinder at a time and the cap is then installed on the fuel rail in place of each injection line. When the bad injector is blocked off, the fuel pressure at the rail will increase and your engine will start.



In some situations, it can be useful to have multiple block-off tools, because multiple diesel injectors returning a small amount of diesel fuel will display the same symptoms as an individual diesel injector returning an excessive amount of fuel.



The diesel injector cap tool can also be used for diagnosing engine knocking sounds that could possibly be caused by a diesel injector or a single cylinder issue, especially on engines where you can’t use a scan tool or if a scan tool is unavailable.



This part is appropriate for the following applications:



Make: Dodge / Cummins

Year Range: 2007-2017

Engine: 6.7L Cummins Diesel



This tool will also work on other vehicles with a 18mm fuel line nut.

  • Includes 1 diesel fuel injector block-off tool.
  • An essential tool for anyone who works on 6.7L Common Rail Cummins Engines
  • Helps in identification of faulty diesel fuel injectors and also used to diagnose engine knock sounds
  • This tool will also work on other vehicles with a 18mm fuel line nut
  • Free Shipping

KIPA Diesel Injector Fuel Return Line Kit for Ford E and F series 6.9L 7.3L 1987-1994# M-73120

Product description

KIPA Diesel Injector Fuel Return Line Kit for Ford E and F series 6.9L 7.3L 1987-1994 # M-73120

  • Perfect Brand new aftermarket replacement for all the old return lines on my 6.9L 7.3L. And this comes with the Solid Clamps for the rear injector on both sides
  • This kit is premium quality Fuel Line kit
  • Replace for OE Part Number M-73120
  • Fitment: Brand new aftermarket replacement for Ford E and F series 6.9L 7.3L 1987-1994
  • Get rid of the leaking caps and lost prime from your old air intrusion, Our hose is substantially thicker and all the plastic connectors have a higher quality feel.

TamerX 14mm Diesel Fuel Injector Cap/Block-Off Tool for 5.9L Dodge/Cummins (Individual)

Based on 43 reviews Check latest price

Product description

This package includes one Cap/Block-Off Tool.



The TamerX Diesel Fuel Injector Cap / Block-Off Tool for 5.9L Dodge/Cummins is a toolbox essential for everyone working on common rail Cummins fuel systems.



When a Cummins common rail engine fails to start, your first troubleshooting step should be to check fuel rail pressure. If the pressure is under 5,000 PSI (on a 5.9L engine), the most likely culprit is a defective diesel fuel injector returning excess fuel back to the tank. A return flow volume test will allow you to determine if excessive fuel return flow is the issue.



To identify the individual cylinder that is at fault, you will use this cap/block-off tool. The diesel fuel injection line is removed from one cylinder at a time and the cap is then installed on the fuel rail in place of each injection line. When the bad injector is blocked off, the fuel pressure at the rail will increase and your engine will start.



In some situations, it can be useful to have multiple block-off tools, because multiple diesel injectors returning a small amount of diesel fuel will display the same symptoms as an individual diesel injector returning an excessive amount of fuel.



The diesel injector cap tool can also be used for diagnosing engine knocking sounds that could possibly be caused by a diesel injector or a single cylinder issue, especially on engines where you can't use a scan tool or if a scan tool is unavailable.



This injector block-off tool is appropriate for the following applications:



MAKE: Dodge

ENGINE: Cummins 5.9L (Common Rail)

YEARS: 2003-2007



This tool will also work on other vehicles with a 14mm fuel line nut.

  • An essential tool for anyone who works on 5.9L Common Rail Cummins engines
  • Helps in identification of faulty diesel fuel injectors and diagnosis of engine knocking sounds
  • Free Shipping
  • This tool will also work on other vehicles with a 14mm fuel line nut

User questions & answers

Question: Will this 14mm diesel fuel injector cap / block off tool work on 1996 dodge cummins
Answer: Not sure. But you are not going to want to plug a p pump off. I don't think there is a pressure relief, it will more than likely blow the internal seals out.

Fuel Injector Repair Kit For Ford V8 5.4L 4.6L, Lincoln and Mercury - ORings Basket Filter Spacer Pintle Cap (OPTIONAL FILTER REMOVAL TOOL)

Based on 63 reviews Check latest price

Product description

  • Brand New and High Quality and Ships Fast from USA
  • Replaces for Part Number: 0280150943 , 0280150909 , 0280150556
  • Includes all pictured orings, spacers, basket filters and retaining cap.
  • OPTIONAL FILTER REMOVAL TOOL
  • Package Contents:

    1x Basket Filter Removal Tool (OPTIONAL)

    8x Spacers

    8x Fuel Filters

    8x Upper Viton O-Rings

    8x Lower Viton O-Rings

    8x Pintle Caps



    Each kit Includes all necessary Filters, o-rings and spacers.

    Made in USA

    Using Fluoroelastomers (Viton) O-Rings

    Common Names:

    FKM, Fluoropolymer.

    Trade Names: Viton, Fluorel, Technoflon, Dai-El.

    General Description:

    FKM compounds are widely used in chemical, automotive, aerospace and industrial applications. These compounds offer excellent chemical and temperature resistance. There are many additional specialty compounds based on A, B, F, GLT, GFLT, LTFE and ETP polymer types.



    Features:

    High temperature resistance.

    Excellent resistance to acids, fuels, mineral and vegetable oils and greases, aliphatic, aromatic and chlorinated hydrocarbons, non-flammable hydraulic fluids (HFD) and many organic solvents and chemicals.

    Low swelling in ASTM oil No. 1, and IRM 902 and IRM 903. Excellent resistance to aging and ozone. Low gas permeability, low compression set. Limitations: · Steam, hot water, amines, polar solvents, low molecular weight organic solvents and glycol-based brake fluids. Ammonia gas, low molecular organic acids (formic and acetic acids).

    Service Temperature: · 2o to 400o F (-16o to 204o C). General compounds · -67o to 432o F (-55o to 222o C). Specialty compounds
    • 8x Spacers
    • 8x Fuel Filters
    • 8x Upper Viton O-Rings
    • 8x Lower Viton O-Rings
    • 8x Pintle/Retaining Caps

    User questions & answers

    Question: Has anyone used this kit because they were having low mileage issues and did this help. Will it work on a 04 lariat 5.4l f150? Thanks
    Answer: They should I put them on my 98 mustang
    Question: Will these fit a 02 Lincoln town car 4.6v
    Answer: dont think so. Didnt fit my 04 lincoln
    Question: Is this oring fit town and country
    Answer: I believe so. I used these on a 2003 Mustang GT. As long as the Town & Country has a 4.6L 8 Cylinder motor, they should work.
    Question: Will these fit 2006 f150 5.4 3v
    Answer: Yes they fit.

    kweiny Diesel Common Rail 18mm Fuel Injector Cap Block Off Tool

    Based on 9 reviews Check latest price

    Product description

    Operation principle:

    When the pressure of the common rail is too low to start the engine. One of the possible reasons is a defective diesel fuel injector returning excess fuel back to the tank. To identify the individual defective cylinder. You can remove the diesel fuel injection line from the cylinder, and use this block off tool instead of diesel fuel injection line to seal common rail pipe. If the engine can be started normally, and the common rail pressure return to normal value. It prove that the injector of this cylinder is malfunction.

    If your scanner cannot perform certain tests. This diesel injector block off tool can also be used for diagnosing engine knocking sounds that could possibly be caused by a single cylinder issue.

    In some situations, You may need several block off tools to test several injectors at the same time.



    Compatibility:

    Fit with 2006-2011 6.6L Chevy/GMC Duramax (LBZ & LMM) and 2007-2017 6.7L Dodge/Cummins, Renault engine system, and other vehicles with a 18mm fuel line nut;



    Package include: 1 x Block Off Tool



    Specification: M18 x 1.5mm



    Material:Carbon tool steel, surface antirust.

    • Main Usage: Identification of faulty diesel fuel injectors and diagnosis of engine cylinder knocking sounds;
    • Compatibility: Fit with 2006-2011 6.6L Chevy/GMC Duramax (LBZ & LMM) and 2007-2017 6.7L Dodge/Cummins, Renault engine system, and other vehicles with a 18mm fuel line nut;
    • Working principle: Block the fuel supply to the detected cylinder, and sealed diesel common rail pipe. Make the detected cylinder temporarily stop working;
    • Specification: M18x1.5mm internal thread nut;
    • Material: Carbon tool steel, surface antirust.

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