OTC 3673 Diesel Glow Plug Tester

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Clip the multimeter’s negative lead to a ground point in the engine. The main two ground points can be found by following the wire that leads from the negative battery terminal into the engine wall or following the wire that leads from the alternator into the engine wall. These wires are attached to bolts. Attach the negative lead onto one of these bolts for grounding. Air Compressor Filters Accessories & Consumables Air Tools and Accessories Oils & Lubricants Low Noise Compressors What’s more, they’ll allow you to test the glow plugs themselves without having to remove them from the engine making it a much easier process all round. Quality Glow Plug Testers

How to test and replace a glow plug | Auto Electrical | Natrad How to test and replace a glow plug | Auto Electrical | Natrad

It is best to use a digital multimeter for this test. A digital multimeter shows the exact number result of the test. An analog multimeter is harder to read because every possible result is listed at the top. [4] X Research source Glow plugs for auxiliary heaters (Type GH) for additional warmth and comfort even when it’s icy cold outside. Different versions meet the needs of auxiliary heaters in both petrol and diesel vehicles. A change to a pulse width modulated (PWM) signal with an initial peak voltage around 23 A reducing to 20 A after around 8 s. Applications include: Chrysler 3.0L CRD and Jeep 3.0L CRD; Mercedes Benz A Class, B Class, C Class, CLA, CLK, CLS, E Class, GL/M/S Class and Sprinter 2.1 CDI; Smart Forfour and Mitsubishi Colt. The simplest way to test glow plugs is with a clip on current clamp, either on supply wire to glow plugs or on engine earth, with glow plug light on you should see 15-20amps for each glow plug fitted, 4 cylinders would be approximately 60-80amps.While the multimeter can seem daunting because of its many numbers and dials, you only need to use one setting for this test: Ohms. The ohms setting will be denoted by the omega symbol (Ω) resembling a horseshoe. Unless you have an auto-ranging multimeter, you will also be able to set the maximum range for the test. You can always change this during the test if you find you aren’t getting a useful reading, Electric Heater Accessories Gas Cylinder Storage Gas Heater Accessories Propane/Butane Hoses and Regulators Before we dive into failure symptoms, it may help to understand what a glow plug does. Glow plugs assist ignition by heating up the air and fuel (diesel) mixture. Reaching a high enough temperature allows it to combust under pressure. This can be at over 200° C.

Nexas DGP301 Glow Plug Tester 12V Diesel - LJM Car Diagnostics Nexas DGP301 Glow Plug Tester 12V Diesel - LJM Car Diagnostics

Test the voltage of the battery. Put your multimeter in DC Volt reading mode. Place the negative lead of your multimeter onto the negative terminal of the battery, and the positive lead onto the positive terminal. The reading should be close to 12.5 Volts when the car is off and close to 13 Volts when the car is running. Injected diesel fuel ignites if the cylinder charge temperature reaches 850° C during compression. However, this temperature may not be achieved with cold ambient air conditions and engine components. In these circumstances, the glow plugs are activated to heat the cylinder charge and ensure adequate combustion. Before you start, ensure that you have read all relevant instructions in your owners’ manual and have all relevant tools at hand.

Add to this the fact that it also measures resistance for evaluation of the specifics of that plug and it’s easy to see why every mechanic needs one in their tool kit.