Fuel Leak Detectors of 2025
Best Choice1
PowerScalePowerScale Smoke Machine Liquid - 8.5oz(250ml) - Smoke Fluid Refill Solution for Automotive Smoke Machine Testing - EVAP, Vacuum, Fuel, Exhaust Systems, Turbo & Super Charger
Main highlights- Wide Compatibility - Fits Most Automotive Smoke Machines: Our smoke machine fluid refill is compatible with most smoke machine models on the market. Designed to create clean, high-density smoke and ensure reliable leak testing of EVAP, Vacuum, Fuel, Intake, Exhaust, Turbo Systems, and Super Chargers. For best results, pair it with the PowerScale Smoke Machine, specifically engineered to maximize the performance of our fluid-Asin：B0CN3G45D6
- Smoke Machine Liquid Of Large Capacity - 8.5oz/250ml: Each bottle offers a generous amount, reducing the need for frequent refills and providing long-lasting use, making Smoke Machine oil cost-effective
- Easy to Clean: Specially formulated to leave minimal residue, this smoke machine liquid is easy to clean, extending the lifespan of your equipment
- Easy to Add - User-Friendly Design: Designed for easy addition, the gas leak detector liqiud ‘s simple to use whether for professional automotive repair shops or personal garages, our automotive smoke machine liqiud meets all automotive smoke machine fluid needs
- 2 Seconds Smoke Output - Non-Toxic: Our liquid smoke detector fluid refill features an advanced formula that ensures excellent and rapid smoke production, while being non-toxic and environmentally friendly for safe and reliable use
9.8Exceptional
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Value for Money2
SolaryEvap Smoke Machine Leak Tester - 12V DC Vacuum Smoke Diagnostic with Built-in Air Pump
Why we love it
No external air source needed.
Safe to use with temperature protection.
Versatile for various vehicle types.
9.7Exceptional
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3
THIKPOSmoke Machine Automotive with Built-in Air Compressor, Professional Smoke Leak Detector for Car, Diagnostic Leak Tester Tools for EVAP, Vacuum, Fuel and More Leak Testing
Main highlights- 【Safe Car Smoke Tester】This vacuum leak smoke tester automotive is made of thick metal, compact and durable. It has a smart protection device that automatically cuts off the power if the working temperature exceeds the limit value to ensure the safety of the operator and the smoke machine. The device uses baby oil to produce harmless smoke and is perfect for leak detection in the ductwork of all DC12V vehicle types such as cars, motorcycles, snowmobiles, ATVs, light trucks and speedboats.
- 【NOTE】This EVAP smoke machine leak tester is a regular pressure automotive fog machine leak detector (15psi and above), when used on a system required working pressure be equal or lower than 15psi, such as EVAP, you need an additional low pressure regulator.
- 【Comprehensively Detecting Various Types of Leaks】This smoke machine leak detector can produce columnar smoke at the point of leakage, so as to locate the leakage point in the compartment, repairing it in time and improving driving safety. Great for detecting leaks from throttle shafts, engine blocks, turbo test systems, crankcase systems, air intake systems, exhaust systems, fuel tank systems, EVAP systems, EGR systems, cooling systems, and various piping in a wide range of vehicles (including older models).
- 【Complete Leak Detection Adapters & Extra Duct Caps】Our multi-functional vehicle smoke machine includes cone adapters, smoke delivery hoses, air intake bladders that work seamlessly with a wide variety of lines and hoses, making it ideal for checking vacuum, fuel, engine, air intake systems, and more. The additional 7 different sized pipe caps feature a tapered design for a tight seal at the appropriate pipe and are made of high quality automotive grade plastic for durability.
- 【Built-in Air Pump & Fast Smoke Out】This automotive smoke machine has a built-in air pump, no need for additional air connection and external air pump maintenance cost, high efficiency, convenient and money-saving. The built-in air pump's compressor generates 19 to 23 psi of air pressure to easily introduce smoke into the automotive system under test, which can produce a large amount of smoke within 10 seconds, allowing you to quickly and accurately locate leaks.
- 【Accurate Leak Detection and Pressure Decay Test】Built-in adjustable flow meter and pressure gauge allows you to quickly and accurately detect even the smallest leaks, ensuring an accurate diagnosis every time. It also supports pressure decay testing, which identifies tiny leaks by applying a specific pressure and monitoring the pressure gauge, especially for hard-to-find vacuum leaks.
9.5Excellent
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4
Solary22% OffSolary Automotive Smoke Machine Leak Detector - 12V DC EVAP Vacuum Diagnostic Tester for Pipe System
Main highlights- User-Friendly: With a simple and intuitive interface, the device has a low entry barrier, making it easy for even first-time users to quickly get started
- Smart Protection: The smoke tester leak detector is equipped with overheat and freeze protection. It automatically shuts off if the temperature exceeds 75°C and offers freeze protection down to -20°C, ensuring the safety of both the equipment and the operator
- Quick Detection: The machine generates thick smoke within just 10 seconds of startup, providing enough output to detect even the smallest leaks, ensuring fast and accurate problem identification
- Multi-Function: Suitable for a wide range of tests, including EVAP systems, vacuum leaks, low-pressure turbo leaks, intake manifolds, cooling/EGR/exhaust systems, and more. It can be used on cars, motorcycles, and various other vehicles
- Lightweight and Portable: Weighing only 2.5 kg, the Solary Automotive Car smoke machine is compact, easy to store, and transport, making it an essential tool for every car owner
- Built-in Air Pump: smoke machine features a built-in air pump, eliminating the need for an external air source, allowing you to perform tests anytime, anywhere. Simply add about 20ml of baby oil or Glycerin (oil not included) to start your testing effortlessly
9.3Excellent
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5
AUTOOLSmoke Machine Automotive Leak Detector,Evap Vacuum Smoke Diagnostic Tester,Pipeline Fuel Leakage Detector Compatible with 12V Vehicles
9.5 Simple to use9.1 worth the money8.9 Instruction9.1Excellent
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6
AutoLine Pro43% OffAutoLine Pro EVAP High Volume Smoke Machine Leak Tester – Shop Series - Automotive Smoke Tester for Vacuum Leak Detection - Car Smoke Machine with Ceramic Smoke Coil and Best Ranked Smoke Fluid
Main highlights- 【SIMPLE TO USE】(1) Fill with the included OEM Approved or any Smoke Fluid. (2) Connect your Air Supply (ANY SIZE and ANY TYPE OF AIR COMPRESSOR WILL WORK). (3) Start smoke diagnostics!
- 【PRECISE AND SAFE】Engineered 100% safe for all vehicles. Thick Smoke output detects even the smallest leaks.
- 【OEM APPROVED SMOKE FLUID INCLUDED!】 Safe for all systems and sensors. 800 Min Premium High-Smoke output formula. We’ve included plenty of fluid so you can focus on what’s important. ( Other brand's smoke machine just comes with EMPTY bottle)
- 【LIFETIME WARRANTY!】You're fully covered from all manufacturer and operational defects. We're right here in the United States and will replace your unit or parts - fast and hassle free :)
- 【HIGH PERFORMANCE, PREMIUM BUILD】Made in the USA. Solid Thick Metal Construction for durability. Equipped with our brand new AutoLine Pro Ceramic Smoke Coil and Top Rated Smoke Fluid that outputs LOTS OF SMOKE and last a Lifetime.
- 【1.5-HOUR NON-STOP SMOKE!】1.5-Hour Non-Stop Smoke Test (each use) for EVAP Systems, Vacuum Leaks, Low-Pressure Turbo Leaks, Intake Manifolds, Cooling/EGR/Exhaust Systems, Worn Rubber, Gaskets, Seals, Connectors, and more! The tapered smoke injection nozzle fits into virtually all hoses and lines.
8.9Very Good
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7
TUIRELSmoke Machine Automotive Leak Detector, Smoke Machines Leak Tester for All 12V DC Vehicles in Vacuum,Fuel Diagnostic Pipe System,Built-in Air Pump (Oil Not Included)
Main highlights- 【Why Need It】Avoid the following situations: 1. The rupture of the vacuum hose will cause the mixture to be too thick, the idle speed will increase, the fuel consumption will increase significantly, and the exhaust pipe will emit black smoke. 2. Blocking will cause the idle speed to drift, and the idle speed is easy to stall. 3. Air leakage in the vacuum tube will cause the engine to run weakly. Comes with high-value and practical accessories tools, the TUIREL EVAP smoke machine leak tester is made of premium metal
- 【Universal Compatibility】Our C4 automotive smoke machine leak detector is designed for testing leak in vehicle pipe systems, such as car sealing, fuel tank systems, exhaust and intake systems and more. This smoke tester automotive use on all types of vehicles including cars, motorcycles, snowmobiles, ATVs, light trucks and boats
- 【Smart Protection】The smoke machine has overheat and freeze protection, it will be in self-protection state after a long working time to avoid the smoke maker overheated, the indicator light will be off. And the equipment will stop making smoke, until the temperature comes to safety level. You can cool the equipment with the air pump. Do not fill oil while working
- 【Lightweight and Portable】Automotive Smoke Machine Leak Detector with Built-in Air Pump, which Our C4 smoke machine automotive weighs only 1.3kg, to be small and light, not only for easy storage, but also for ease of use
- 【IMPORTANT TIP】Automotive smoke machine can't be connected to the 12V power supply in the office, or it cannot output the smoke.It just support a 12V battery with a current range of 6A-8A (Ordinary car batteries are eligible)
- 【Easy Operation】1.Fill 10ml-20ml test Johnson baby oil pink label (the most suitable oil and Not Included) to the detector. 2. Disconnect the intake pipe of the car. Connect the intake pipe of the car with the detector. 3. Connect the detector with the DC12V battery, and it starts to work. 4.The pipe will be filled with smoke. Check the leak points. PLEASE NOTE: make sure not to exceed 20 ml, and please use baby oil or paraffin oil
8.8Very Good
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8
Solary35% OffSolary Smoke Machine for Car - DC 12V EVAP Automotive Smoke Tester for Vacuum Leaks
Why we love it
Detects leaks quickly and accurately.
Safe with built-in overheating protection.
Portable and easy to use.
8.6Very Good
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9
DLNLIYDLNLIY Smoke Machine Automotive Leak Detector - EVAP Vacuum Smoke Diagnostic Tester Built-in Air Pump, Pipeline Fuel Leakage Detector for Pipe System Compatible with All DC 12V Vehicles
Main highlights- 【Super Helper】 This EVAP smoke machine leak tester can precisely locate over 99% of pipe leaks in just a few minutes. Such as these issues, 1. A vacuum hose rupture will make the mixture too rich, increase idle speed, cause starting issues in a warm car, lead to engine surging during acceleration, significantly raise fuel consumption, and produce black smoke from the exhaust pipe. 2. Air leakage in the vacuum tube can make the engine run poorly. 3. Blocking can cause the idle speed to fluctuate, making it prone to stalling
- 【Smart Protection】This automotive smoke tester features overheat and freeze protection. It automatically shuts off if the temperature exceeds 167°F (75°C) and provides freeze protection down to -4°F (-20°C), ensuring the safety of both the operator and the device
- 【Multi-function】Our smoke diagnostic tester offers multiple functions including EVAP system test, vacuum leaks, low-pressure turbo leaks, intake manifolds, cooling/EGR/exhaust systems, and more. It is compatible with all DC 12V vehicles such as cars, motorcycles, snowmobiles, ATVs, light trucks, and boats
- 【Lightweight & Portable】Most automotive smoke machines are bulky and heavy, making them difficult to transport and store, and suitable only for repair shops. Our automotive smoke tester weighs just 5.5 lbs (2.5 kg), making it small and lightweight. This ensures easy storage and convenient use, making it an essential tool for every car owner
- 【Easy Operation】1. Fill the detector with about 20ml of baby oil. 2. Disconnect the car's intake pipe and connect it to the detector. 3. Connect the detector to the DC 12V battery to start it. 4. The pipe will fill with smoke within 10 seconds, generating enough output to detect even tiny leaks, ensuring quick and precise problem identification
- 【Built-in Air Pump】The automotive smoke machine features a built-in air pressure pump, eliminating the need for additional air machines. Just add about 20ml of baby oil or glycerin (oil not included) to start testing easily, significantly improving flexibility and efficiency during on-site work
8.4Good
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10
KOLSOLKOLSOL Automotive Smoke Leak Detector with Pressure Gauge, Smoke Machine Built-in Air Pump, DC12V Car Smoke Detector Test Leak in Vehicle Pipe Systems for Cars, Motorcycles, Snowmobiles, ATV, Boats
Main highlights- 【Wide Range of Applications&Lightweight】 The Smoke machine automotive can be use to test pipe systems on all cars, motorcycles, snowmobiles, ATVs, light trucks, and speedboats, compatible with all vehicle types(DC 12V Vehicles). The smoke detector features lightweight and simple design.
- 【PLEASE NOTE】The automotive smoke machine can not be connected to the 12V power supply in the office, or it cannot output the smoke. Smoke detector can just support a 12V battery with a current range of 8A-10A (Ordinary car batteries are eligible).
- 【Easy to operate】Only 3 steps to use the smoke detector: 1.Mount the Power Cords to the Power Inlets. 2.Mount the Smoke Tube to the Smoke Outlet, and lock it with the quick clamp. 3.Open the Oil Filler Port, fill smoke oil into the reservoir, note the Oil Level Indication Window, make sure the oil level do NOT exceed the Max line. If the smoke oil is overfilled, turn the unit upside down to drain some oil out. Now the smoke machine is ready to use.
- 【DUAL MODELS Test】A6 Automotive smoke detector has two ways to quickly solve leaks. Air test mode can help you determine if there's a leak. And smoke test mode can help you locate leaks.
- 【Built-in air pump】A6 Automotive smoke detector is built-in air compressor, not limited by the site. And the smoke machine is also equipped with pressure gauge and liquid observation window and overheat protection device, safe and user-friendly.
- 【A6 Automotive Smoke Leak Detector】KOLSOL A6 automotive smoke machine is designed for testing leaks in all DC12V vehicles' pipe systems. It can easily check car sealing, throttle shafts, engine block, turbo test system, crankcase system, intake system, exhaust system, fuel tank system, EVAP system, EGR system, cooling system, various pipe fittings leakage problems.
8.3Good
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