My Grease Gun Wont Prime, Why?

DISCLOSURE: TheRuggedRooster.com is reader supported so if you buy any products featured on this site I may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Read my full disclosure here.

Are you having trouble priming your grease gun?

If so, then you have come to the right place. There are many possible reasons why your grease gun won’t prime.

Priming your grease gun can be a challenging task, whether you have experience using them or not.

However, the task should not be difficult if you know a few tricks and how to work around them.

This post will teach you more about the common issues and how to prime your grease gun.

I have been using these grease guns for a long time, and several have stopped working or became less efficient for one reason or the other.

In most cases, these grease guns started operating properly again after a simple repair.

Therefore, if your grease gun won’t prime, you can try my advice.

But before we get into priming your grease gun, let’s first talk about the possible reasons behind the issues with the equipment.

Common Issues that Can Prevent Your Grease Gun from Priming

As I mentioned earlier, there are plenty of reasons why your grease gun might fail to prime.

For instance, there is a high chance that you will have some problems with your grease equipment if you have recently invested in a new one.

You may think the case might be different for you if you have had experience with multiple grease guns before.

However, there are often minor issues that can often mess with how effective your new grease gun can be.

Lucky for me and you, most of these problems with grease guns have a solution.

Here are some of the issues that have prevented my grease gun from priming in the past.

Alongside the problems, I have provided the solution and how to get your equipment working in no time.

Bestseller No. 1
Etekcity Infrared Thermometer 1080, Heat Temperature Temp Gun for Cooking, Laser IR Surface Tool for Pizza Oven, Meat, Griddle, Grill, HVAC, Engine, Accessories, -58°F to 1130°F, Yellow
  • Wide Temperature Range: Measure an upgraded temperature range from -58°–1130°F / -50°–610°C and get your result in 500 ms; The display will also show the max temperature of the surface you’re measuring.
  • Professional EMS Mode: The Lasergrip 1080 Infrared Thermometer has an emissivity range of 0.1–1.0 for precise readings across different surfaces and conditions; Quickly adjust the emissivity by pressing and holding the Up and down buttons.
  • Non-Contact: 12:1 D:S, the Lasergrip can accurately measure targets from a distance, making it safer to measure dangerous objects; For the best accuracy, the distance between the thermometer and the object of measurement should be approximately 14.17 in.
  • Additional Functions: The Lasergrip has a backlit LCD screen with a unit conversion feature (°F/°C); It has an auto-off feature to extend battery life and a low battery indicator, so you will not accidentally run out of battery life.
  • Versatile Design: Infrared technology allows you to measure the surface temperatures of various objects with temperatures above the boiling point and below the freezing point; Use it for cooking, ovens, A/C, refrigerators, soapmaking, pets’ beds,etc.

My Grease Gun Won’t Prime after I Install a New Cartridge

This problem is by far the most frequent issue I have had in the past. Additionally, most of my friends often cite the reason after installing a brand-new cartridge.

Of course, it can be frustrating to replace your grease gun cartridge, and you can’t seem to get any grease coming out of the nozzle.

When you install a new cartridge, the most common issue that may prevent it from working is the trapped air at the top of the cannon.

With the air trapped between the nozzle and the grease, trying to get grease can be a nightmare. Luckily, the problem is very simple, and you can fix it through a few simple steps.

To get the grease gun working, follow these few simple steps.

  • Step 1: – Rotate your grease gun’s base in anti-clockwise direction to release the trapped air. Two or three spins are enough to bleed out the air completely.
  • Step 2: – While turning the base, keep pumping the grease gun to enable the air escape.
  • Step 3: – Once the grease starts leaking out the end, rotate the base back in the clockwise direction to re-seal the grease gun.

Following the steps above is the simplest technique to handle the air that settles on the grease gun’s top.

If pumping does not help you get the grease out of the nozzle, you can use your fingers and a rag to push it to the end of the cartridge.

Bestseller No. 1
I Run Because I Really Like Beer T Shirts With Funny Saying
  • Our Garments Designs Include: Funny, Family, Relationship, Sports, Music, Education, Animals, Jobs, Religion, Names, Graphic Tees Shirt, Funny Sayings, Vintage and Fan Tee, Best Men Women Apparel for Birthdays, Holidays, and Everyday Gift Ideas T-shirts
  • Big Clothing Selection of Short & Long Sleeve Tees, Fit & Sizes Small to 3XL Men's, Women's, Boys, Girls, Kids, Teen and Youth
  • Lightweight, Classic fit, Double-needle sleeve and bottom hem

Perhaps You Haven’t Removed the Cap that Holds the Grease

Although it may seem like an easy and stupid error, many people can fail to get their grease guns priming due to leaving the cap on.

These caps are meant to keep the grease inside the gun before you can start using it. If you are a seasoned user, that might not be a problem.

However, you may newbies have failed to remove the cap, and that might be the reason why your grease gun isn’t priming.

Fixing this issue is as easy as removing the cap on the top of the grease gun cartridge, and that would get your grease gun working.

Additionally, certain grease gun cartridges may include a tiny metal tab that you have to remove alongside the cap.

Ensure you check if the metal is causing the trouble; if yes, remove it, and your grease gun will start priming.

A Faulty Grease Gun Spring

If you have tried everything else but the grease gun won’t prime, chances are the grease does not produce enough pressure to push the grease into the chamber.

That is the most common problem that you can encounter if you use a manual grease gun.

Fixing this problem is simple.

However, you may have to purchase a new grease gun spring.

Once you replace the old spring, your grease will start working again.

Bestseller No. 1
Cyxus Polarized Aviator Sunglasses for Men (Gunmetal Frame - Black Lens)
  • MIRRORED LENS – Polarized mirror sunglasses with HD TAC lens absorb 100% Harmful UVA & UVB rays instead of reflecting. Reflective UV rays lens cause eyes pain. Anti-glare black aviator sun glasses for large head bring you a clear vision while driving.
  • SKIN-FRIENDLY - Classic fashion pilot shape sunglasses for big face are crafted from durable antioxidant plating metal frames with double bridge and comfortable soft silicone nose pads and give you a comfortable wearing experience.
  • SPRING HINGES - Ultralight mirrored eyewear temples with spring hinges can flexible outward expansion, greatly reduce the pressure of the frames on the head, suitable for a square face, a Long face, a diamond face, an oval face, a round face.
  • FOR DRIVING - In addition to driving, metal ultra light sunglasses for men are also suitable for other outdoor activities(anti-wind, anti-UV, anti-dust)such as hiking, climbing, skiing, fishing, cycling, snowboard, baseball as so on.
  • GIFT PACKAGE & LIFETIME WARRANTY - UV blocking eyewear is a wonderful gift idea for friends and family! All Cyxus customers enjoy 30 days of free trial and a lifetime warranty guarantee and return or replace the product you are not satisfied with for any reason.

3 Reasons Why Your Grease Gun Won’t Prime With Solutions

There are plenty of factors that might prevent your grease gun from priming.

However, you do not have to go through all the trouble if you know a few tricks.

Primarily, your grease gun will not prime if air is trapped at the top of the cannon because you haven’t removed the cap and metal tab and finally, when the grease gun spring does not generate enough pressure to push the gun grease out the nozzle.

If you are experiencing the problems above, follow the tips above to get your grease gun working functioning properly.

Last update on 2022-12-01 / Affiliate links / Images from Amazon Product Advertising API