Ignition Coil Guide for the 1955 Lincoln Custom
Everything you need to know before replacing the ignition coil on your classic Lincoln.
- You MUST confirm if your 1955 Lincoln has a 6-volt or 12-volt electrical system before buying a coil.
- Symptoms of failure include hard starting, misfiring, stalling (especially when hot), and backfiring.
- For reliability, choose a top-tier aftermarket brand like Standard Ignition or NGK.
- Replacement is a simple DIY task that takes less than an hour with basic hand tools.
Is Your 1955 Lincoln Custom Having Ignition Problems?
If your classic Lincoln is suddenly hard to start, running rough, or stalling, a failing ignition coil could be the problem. These canister-style coils are simple but work hard, and they can fail from age, heat, and vibration. This guide covers the common symptoms of failure and helps you choose the right aftermarket replacement.
Crucial First Step: Check Your Voltage
The year 1955 was a transition period for electrical systems in the auto industry. Some vehicles still used a 6-volt system, while others had moved to a 12-volt system. You must verify which system your specific 1955 Lincoln Custom has before ordering a part. Installing a 12-volt coil on a 6-volt system (or vice-versa) will lead to poor performance and premature part failure. Check your battery or a shop manual to be certain.
Symptoms of a Failing Ignition Coil
A bad coil on a vintage car can fail completely at once or slowly degrade, often getting worse as the engine bay heats up. Look for these signs:
- Hard Starting or No-Start: The engine turns over but struggles or fails to fire up. A completely dead coil will prevent the car from starting at all.
- Engine Misfires and Rough Idle: The car may shake, sputter, or jerk, especially at idle or under acceleration. This happens when the coil can't provide a consistent spark.
- Stalling and Power Loss: The engine may cut out unexpectedly, particularly after it has warmed up. You may also feel a noticeable lack of power when accelerating.
- Backfiring: Loud pops from the exhaust can be caused by unburned fuel igniting in the hot exhaust pipes due to a weak or intermittent spark.
- Weak Spark: If you test the spark from the coil wire, a failing coil often produces a weak, yellow or reddish spark instead of a strong, bright blue one.
Choosing the Right Aftermarket Ignition Coil
For a vehicle from 1955, New Old Stock (NOS) OEM parts are extremely rare and expensive. Modern aftermarket parts are the standard and are often made with better materials and technology than the originals. However, quality varies by brand.
| Brand Tier | Brands | Quality & Performance Assessment |
|---|---|---|
| Better (Recommended) | Standard Ignition, NGK | Both Standard Ignition and NGK are top-tier aftermarket manufacturers with reputations for high quality and reliability. They are often OEM suppliers for many car brands and are considered a safe, dependable choice for your Lincoln. These brands focus on engineering parts that meet or exceed original specifications. |
| Good | Spectra | Spectra is a widely available aftermarket brand that offers a more budget-friendly option. While they often come with good warranties, some user experiences suggest a higher potential for premature failure compared to premium brands. It can be a suitable choice if budget is the primary concern. |
| Economy | Global Parts | This brand typically falls into the economy or value category. It is the most affordable option but may not offer the same long-term durability or performance consistency as higher-tiered brands. |
Pro Tip: Perform a Full Tune-Up
Since you are working on the ignition system, it's a great time to do a complete tune-up. For best results, consider replacing the spark plugs, distributor cap, rotor, and condenser along with the ignition coil. This ensures all components are fresh and working together efficiently.
Frequently Asked Questions (FAQ)
Do I need an external resistor with my new coil?
It depends on the coil and your system. Many 12-volt points systems use an external ballast resistor to lower the voltage to the coil during normal operation, which prevents it from overheating. Some aftermarket coils have a built-in resistor and do not need an external one. Always check the new part's specifications to see if a resistor is required for your application.
Is replacing the ignition coil a difficult job?
No, this is a very easy job for a DIY mechanic. On the 1955 Lincoln, the coil is a canister mounted on the engine or fender wall, making it easy to access. It typically involves disconnecting the battery, removing a few wires, and unbolting a single bracket.
What is an oil-filled canister coil?
This is the standard type of ignition coil for your 1955 Lincoln. The metal can is filled with a special oil that helps dissipate heat and cool the internal copper windings, which is essential for a long service life.
Can I use a modern high-performance coil like an MSD?
Yes, you can upgrade to a high-output coil, but you must ensure it is compatible with your points-style distributor and system voltage. Performance coils often require matching components, like specific spark plug wires and a compatible ballast resistor, to function correctly without damaging other parts of the ignition system.
Technical Specifications
Canister-style, oil-filled ignition coil. Must match vehicle's 6-volt or 12-volt system. May require an external ballast resistor depending on the specific coil and vehicle setup.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.