Ignition Contact Set Replacement Guide for the 1946-1948 Studebaker M15A
Keep your classic Studebaker M15A running reliably with a fresh set of ignition points.
- The ignition contact set (points) is a normal wear item that requires periodic replacement.
- Symptoms of failure include hard starting, rough idle, misfiring, and stalling.
- Always replace the condenser at the same time as the points to ensure reliability.
- Standard Ignition is the primary aftermarket brand providing new replacement sets for your truck.
Understanding the Ignition Contact Set in Your Studebaker Truck
Your 1946-1948 Studebaker M15A uses a simple and robust ignition system that relies on a mechanical ignition contact set, or 'points,' to create spark. Unlike modern vehicles with computer-controlled electronic ignition, your truck's timing is managed by this small switch. The points are mounted inside the distributor and work alongside a condenser. The points' rubbing block wears down over time from riding on the distributor cam, which changes the timing and spark quality. Because of this wear, the ignition contact set is a regular maintenance part, just like an oil filter.
Symptoms of a Failing Ignition Contact Set
When the points in your M15A begin to fail, the signs are usually clear. Worn, pitted, or improperly gapped points create a weak or inconsistent spark, leading to several performance issues.
- Hard Starting or No-Start: The engine cranks over but struggles to fire up or won't start at all. This is often the first and most common sign of bad points.
- Engine Misfires and Rough Running: The truck may hesitate or stumble during acceleration. An uneven or shaky idle is also a classic symptom.
- Stalling: The engine may stall when you come to a stop or at low RPMs because the spark is too inconsistent to keep it running.
- Reduced Power: You may notice the truck feels sluggish and lacks its usual power. Inefficient combustion from a weak spark wastes fuel and reduces engine output.
A Note on Condensers
The condenser is a small capacitor that works with the points to prevent them from arcing and burning out prematurely. It is highly recommended to replace the condenser every time you replace the ignition contact set. A faulty condenser can cause a new set of points to fail very quickly.
Choosing the Right Aftermarket Ignition Contact Set
Finding original, new-old-stock (NOS) Studebaker parts is difficult, and for electrical components like points and condensers, it can be risky. Decades of storage can cause corrosion or internal failure even in unused parts. For a reliable repair, a new aftermarket part is the best choice.
For the 1946-1948 M15A, the primary brand available for new ignition contact sets is Standard Ignition (Standard Motor Products). Standard is a long-established company that manufactures parts for a wide range of classic vehicles. While some classic car enthusiasts have differing opinions on modern versus vintage quality, Standard Motor Products remains a go-to source for these essential tune-up parts and is known to produce reliable components that meet original specifications.
| Part Type | Price Range |
|---|---|
| New Aftermarket (Standard Ignition) | $21.53 - $22.84 |
| Shop Labor for Installation | $60 - $120 |
Pro Tip: Gapping is Critical
The most important step of installation is setting the correct point gap. An incorrect gap will lead to poor performance. This is done with a feeler gauge. While specific M15A specs should be checked in a service manual, a common gap for Studebaker 6-cylinder engines of this era is .020 inches. A dwell meter can also be used for more precise adjustment.
Frequently Asked Questions (FAQ)
Can I replace the ignition contact set myself?
Yes, this is a very common and straightforward DIY job for classic truck owners. It requires basic hand tools, a feeler gauge, and access to the distributor. The process involves removing the distributor cap and rotor, unscrewing the old points and condenser, installing the new ones, and setting the gap.
How often do I need to replace the points?
For a vehicle driven regularly, points were typically checked and adjusted every few thousand miles and replaced around every 12,000 miles. For a classic truck that sees less use, it's good practice to inspect them annually for wear or pitting and replace as needed.
Is there a recall on the ignition system for my Studebaker?
No. There are no active recalls or technical service bulletins for the ignition system on a 1946-1948 Studebaker M15A. Recalls are generally not tracked by the NHTSA for vehicles of this age.
Should I convert to an electronic ignition?
For owners who want to reduce maintenance, converting to an electronic ignition is a popular upgrade. Conversion kits replace the points and condenser with a solid-state module that fits inside the original distributor, maintaining a stock look. However, a properly maintained points system is very reliable and easy to diagnose and fix on the road.
Technical Specifications
The 1946-1948 Studebaker M15A uses a 6-volt, positive-ground electrical system. It is equipped with the Champion 169 cubic inch 6-cylinder engine. The ignition contact set is located inside the distributor.
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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.