JLM Lubricants

JLM Injector and Spark Plug Loosener

J04210

 / 500ml

  • Breaks up rust with cold shock
  • Releases seized and corroded parts
  • Removes corrosion, dirt crust, oil residue
  • Penetrates easily, PTFE lubrication
  • Anti corrosion, leaves protective film
JLM LUBRICANTS INJECTOR LOOSENER J04210

JLM’s Injector and Spark Plug Loosener is especially useful for freeing seized delicate parts. It is strong enough to break apart the bond between two components but is sufficiently gentle to reduce the chance of later damage.

Product information

How to loosen a stuck spark plug or injector with JLM

Avoid using force

When dealing with seized spark plugs or injectors, using brute force can lead to expensive damage. Whilst breaking a stud, by attempting to unscrew a heavily corroded nut, is not always a catastrophe, the cost and effort involved in extracting a snapped spark plug, fuel injector, or glow plug can be considerable.

For a variety of reasons, these components’ threads and those of the cylinder-head can fuse together. The result is a powerful bond that is inaccessible. Rather than using physical force to separate them, JLM Lubricants offers its chemical expertise as a solution.

JLM Injector and Spark Plug Loosener: Your chemical solution

If you’re wondering how to loosen a stuck spark plug or injector safely, JLM’s Injector and Spark Plug Loosener offers a smart, chemical-based solution that eliminates the need for excessive force.

This advanced injector loosener works in two ways:

  1. Rapid chilling to -40°C causes micro-cracks that break the fused surfaces apart.
  2. Incorporates PTFE-enhanced lubrication to minimise friction during removal to reduce stress on the stuck component. 

In addition, this JLM product features:

  • A powerful corrosion inhibitor to protect metal surfaces
  • An acid- and silicone-free formula safe for engine components
  • An easy-to-use aerosol with a precision nozzle for targeted application

How to use JLM Injector and Spark Plug Loosener

  1. Prep the area: Clean thoroughly and remove corrosion flakes with a wire brush. Disconnect wires if safe to do so.
  2. Shake the can: Shake the 400ml aerosol for at least two minutes before use.
  3. Apply the spray: Aim the nozzle directly at the stuck spark plug or injector. The immediate chilling will be visible. Do not touch the area due to risk of frostbite.
  4. Wait: Let the product work for a short period to break the corrosion bond.
  5. Break the seal: Use the correct tool to gently twist the part clockwise and counterclockwise to further reduce thread resistance. Repeat application if needed.
  6. Post-removal care: Clean the threads before refitting the component. JLM’s Injector and Spark Plug Loosener also leaves an anti-corrosion film behind, protecting the exposed threads from oxidation, until the part is replaced.

While the product significantly reduces the risk of damage, avoid applying excessive torque during removal. Use any pullers with care.

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JLM Lubricants

Great addition

"This is a great addition to the products in my workshop. We continuously see fantastic results in the recovery of emissions and engine performance, among other things."

- Paul Finn

JLM Lubricants

Skeptical

"I was very skeptical, but after using the product and starting my car, I couldn't believe my eyes ... the yellow light in my car was no longer on!"

- Kevin Kalo

JLM Fixing cars

Surprising­ly good

"I never thought that JLM would surprise me so much. It gets better and better every time. I will continue to use these products. The fantastic results speak for themselves. Keep up the great work."

- Andrew Watts

Frequently
asked
questions

These are the most common questions we get from a potential distributor.

Do any of the JLM additives help the performance of the high pressure diesel fuel pump?

J02330 Rapid is perfect for pump and injectors!

Is it OK to use the extreme and the DPF cleaner together. ?

No, this will not have a positive effect. In fact it may cause an adverse effect. And also the risk of overdosing! Never combine fuel additives

 

Will BluBoost dissolve existing crystal infestation or is it more like a preventative product?

JLM’s BluBoost additive cleans and prevents crystal formation in the AdBlue dosing system. It also conditions the AdBlue fluid for a longer time to ensure proper working of the AdBlue and SCR system. This helps prevent performance loss and the often-subsequent expensive repairs. It also reduces foaming at low temperatures

Is the JLM Engine Oil Flush safe for use with wet belt engines?

Our JLM OIL FLUSH is safe to use with ‘wet belts’ (TBIO). This is mainly because we use non solvent and premium pack of oil cleaning additives.

 

Does the Petrol Emissions Reduction Treatment also clean the catalytic convertor?

The catalytic converter is not a filter, it functions by converting harmful emission gases into less harmful gases. The filter can become contaminated if for example there has been an oil leak, and when this happens the filter needs to be replaced. There is no additive or chemical that will remove physical contamination from a catalytic.

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