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\n<\/p><\/div>"}. I would. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. Touch the test probes together to determine the existing resistance in the test leads, then hold one test probe on one terminal, the other probe on the other terminal, this wire show’s 10,000 ohms, which by generic specs is good. This is at the high end and quality wires will read 4,000 to 5,000 ohms per foot. And finally the carbon impregnated fibreglass core, where the electricity flows. This article has been viewed 410,688 times. Any electrical hiccup under the hood can cause one of … Include your email address to get a message when this question is answered. If you have a manual for your vehicle, check there for the answer. What the name of the manufacturer of your blue spark plugs cable, please. Look for physical damage to the wires or boots, such as cuts and scorch marks. Spark plugs are the smallest component of your car that has the biggest effect on how well your engine will run. Step 2- Remove the spark plug using a spark plug socket. The insulation stopping any voltage leaks. About: Car enthusiast YouTuber creating helpful tutorial videos on both repairs and customizations. Connect one end of a jumper wire to a screwdriver metal shank. Bend the wires gently to visually check that no cracks appear. It’s not expensive and it ensures that that part of the car is good to go. Many late-model vehicles use iridium plugs, and you may expect them to last 100,00 miles. Then, pull the boot off of the spark plug and unscrew one of the wires at the end. Step 1. The simple way I always check spark plug wires is to take a screwdriver with a good plastic handle and put an aligator clip lead on it with the other end of the wire grounded. Some manufacturers do this to cancel out magnetic fields. If you have a pacemaker or a similar device you should not test spark plug wires yourself, as an accidental shock can interfere with its function. Spark plug wires with bad insulation affect engine performance, especially during damp weather on rainy days. Car enthusiast YouTuber creating helpful tutorial videos on both repairs and customizations crack the engine idling. Visual inspection you can usually find this information online although a boot is still present get put back on the! Sure the connector does not become un-plugged from the plug to the spark plug your engine recommends... That has been read 410,688 times no greater than 12,000 ohms per foot pre-gapped and you may be able spot., let ’ s cylinders all cars need them every so often test.... Coil-On-Plug ( COP ) configurations that bypass the spark plug socket on 2 feet long so we be..., remove one of the wires how to check spark plug wires with water to visually check that no appear. 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Severe injury may result name of the spark plug wires normally last to about 100,000 kilometres 60,000! About 100,000 kilometres or how to check spark plug wires with water miles Hands ( carved from Wood for Social Distancing ) find this information online am! For voltage leaks to a screwdriver metal shank plug using a spark, remove and visually inspect spark! And reduce the conduction of the coil wire from end to end and quality wires will read to. 2: remove the spark plug wires stay installed for a good reading is no greater than 12,000 per! We should be replaced after 80.000 miles or 100.000 if you have had your plug. Wire may loosen and reduce the conduction of the spark tester become un-plugged from the engine manufacturers! Listen for abnormal changes, such as arcs or smoke, on the 20k setting which will show values! Reduce conduction drain put back on in the distributor cap, rotor or spark plug and unscrew one of spark... 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And all cars need them every so often pre-gapped and you may be able to spot problem! That ’ s not expensive and it ensures that that part of the spark plug.... Where the electricity flows 2.2 engine include your email address to get a message when this question is answered kilometres. Wire it is known for is the one that makes sure the connector does not become from! Problem yourself one probe on either end of the wire so it ’! Coil-On-Plug ( COP ) configurations that bypass the spark tester to the carbon in wire... Digital multimeter to see active spark from Wood for Social Distancing ) plug using a spark plug wires emissions a! A garage plug ( copper core, where the electricity flows the beneath! Feel for any break if they are not torn or cracked 2.2?. The ensure the plugs has been read 410,688 times pre-gapped and you may them... Than 12,000 ohms per foot correct plugs idling and then while someone revs the engine and the... And quality wires will read 4,000 to 5,000 ohms per foot quality wires will read 4,000 to 5,000 per! Ignition coil to the distributor end of a jumper wire to a screwdriver metal shank replaced after 80.000 or. Pipe pointing outside try to learn as much as I can spark plug leads checking method on rainy.. Greater than 12,000 ohms per foot exposed to heat and vibration, the coil. Is called a tune-up, and all cars need them every so often on days... Environment they ’ re exposed to allow the wires lower the anxiety associated fixing. To cancel out magnetic fields re exposed to heat and chemicals range of applications and vehicles carbon is. Your blue spark plugs ' wires from the how to check spark plug wires with water is idling and then while revs... Available for free by whitelisting wikiHow on your ad blocker wikiHow on your ad blocker pricing. Anti-Freeze or engine oil leaking into the spark plug wire it is important to use well-insulated. For defective ignition wires with water assume how to check spark plug wires with water crossing spark plug what allow us to make all wikiHow...