How to check if spark plugs are firing? You can be sure of the problem if the side electrode is burnt. It happens when the plug fires too soon, and does not give enough time for the fuel to be transmitted into the chamber’s air-fuel mixture. Such a condition requires quick attention...
If the vehicle has an intermittent misfire, you can artificially increase the coil's firing voltage with a spark plug tester to produce a hotter than normal spark. This should cause any leaks in the plug wires to reveal themselves. You can also use an ignition scope or digital storage oscill...
High-Performance Plugs Some high-performance plugs combust more fuel by providing more sparks to the firing tip. As a result, the car can produce a bit more horsepower. However, the electrode of these high-performance plugs wears thin faster. So, you will need to replace these plugs before ...
the coil is producing firing voltage and the circuit that controls the coil is also working. If the engine is misfiring, the spark plug may be fouled, cracked or shorted. No flash means either a bad coil or a bad coil control circuit. Check the coil wiring connector ...
Shell:The steel shell is fabricated to exact tolerances using a special cold extrusion process. Certain types of spark plugs make use of a steel billet (bar stock) for shell construction. Plating:The shell is almost always plated. This enhances durability and provides for rust and corrosion resi...
In a wasted spark system, the coil pack serves two cylinders at once, firing one spark for the combustion stroke and another "wasted" in the exhaust stroke of the paired cylinder. This type uses a crankshaft position sensor for ignition timing, providing more precise control than a mechanical...
The only way to really tell is to take them out and look at them.It might help if you had a new plug to compare it to.The old plugs electrodes should not appear worn, should not be wet or oily.You can also check and compare the gap, if plugs are not worn but the gap is off...
1. Engine Temperature Warning / Coolant Temperature Warning:an internal combustion engine requires fuel to operate, electricity to start and keep the spark plugs firing, oil to be lubricated, and coolant to transfer heat effectively. This warning light comes on for a variety of reasons, including...
Check and Clean the Plug While you certainly can replace the spark plug, I’ve found that it isn’t necessary if the engine otherwise runs fine. To keep the spark plug firing optimally, you can simply scub any deposits off with a small brass wire brush. If you have one, you can also...
Check and clean sparkplugs every 5,000 miles (8,000 km) and replace them after 10,000 miles (16,000 km). Their condition can tell you about the condition of the engine , and help you to correct faults elsewhere. Read more ignition spark-plugs Ignition System Checking the low-tensio...