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Lincoln Mark LT Ignition Coil

When the Spark is Gone: Troubleshooting Your Lincoln Mark LT Ignition Coil

The ignition coil creates the spark that gets your Lincoln Mark LT going. So if you're having a difficult time getting your engine running, then you probably have a bad ignition coil under your hood. This so-called spark generator generally lasts long, but it will also break down over time. After several years of use, its internal windings may wear out and fail to deliver the necessary spark to the plugs. If your LT's refusing to start or stalling frequently, then it's time to pop your hood open and do some troubleshooting to determine the cause of the problem. Here's a quick troubleshooting guide to help you out:

Engine misfires

An engine that misfires frequently or cuts out temporarily as you drive over uneven terrain and hit bumps on the road is one of the most common symptoms of a faulty ignition coil. This intermittent surge of power from the engine could also mean loose coil wire connections, causing the ignition coil to function poorly. To determine the cause of intermittent power, check the wires if they're still connected properly to the ground and battery. The negative wire should be connected to the ground, while the positive wire should be hooked up to the battery. Ensure these wires are connected tightly to their respective connection points to prevent engine misfires. If tightening the loose connections doesn't do the trick, then take out the faulty ignition coil and replace it with a new unit.

Significant decrease in gas mileage

A bad ignition coil won't have the capacity to deliver sufficient power to your spark plugs, resulting in a significant drop in fuel mileage. If the spark plugs are not receiving enough power, your LT will need more fuel to continue functioning properly. To prevent poor fuel economy, test the resistance of your old ignition coil using an ohmmeter or a digital multimeter. Consult your LT's repair manual for the resistance specifications of your ignition coil and compare the readings from the multimeter with the specs in your manual. If the specs and readings match, then there's no problem with your ignition coil. If you don't get optimum resistance from the terminals, then it's time for you to get a new Lincoln Mark LT ignition coil.

  • Keeping the Spark Alive: Tips in Maintaining Your Lincoln Mark LT Ignition Coil

    If you want your Lincoln Mark LT to run without any problems, then you must go the extra mile when it comes to maintaining its components. It takes a bit of effort, but regular maintenance would surely go a long way, especially when it comes to your ignition coil. Failing to practice proper maintenance on this part may result in engine misfires, poor fuel economy, and frequent stalling. If you don't want to experience any of these problems, take some time off every few weeks or so to give some tender loving care to your Lincoln Mark LT ignition coil. Expect better spark voltage, zero misfires, and reduced coil loads when you practice routine maintenance on this part. We've rounded up a couple of maintenance tips to keep the spark alive in your ignition coil.

    • Regularly clean the ignition coil.
    • Grime, carbon, and other dirt may accumulate on the ignition coils over time. The dirt may block the spark's path, preventing it from reaching the plugs and creating good combustion for your LT. To ensure the spark travels on the right path, clean the ignition coil regularly. The seal, plug insulator, insulator boot, and the area around the coil's nose should be kept dirt-free at all times to prevent engine misfires. You need to remove each coil carefully and wipe them clean with a non-abrasive rag dipped in solvent. A spray-on degreaser and elbow grease may also be applied to remove the accumulated dirt and grime. You need about 30 minutes to get the job done, and the coils will be good as new again.
    • Apply silicone spray on the threads.
    • To prevent the spark from jumping off the coils and causing misfire, you need to lubricate the threads in the ignition coil mountings regularly. A thin coat of silicone spray should do the trick. Spending a few minutes to apply a coating of the right lubricating solution on the threads will definitely pay off in the long run. The silicone spray will not only grease up the threads to help the ignition coil perform more efficiently, but it will also insulate the coil mountings better to prevent misfires.