A Practical Guide to the 1968-1972 Buick Skylark Ignition Contact Set
Keep your classic Skylark's spark strong by understanding its ignition points.
- The ignition contact set (points) is a regular maintenance item on a 1968-1972 Skylark and should be replaced periodically.
- Always replace the condenser at the same time as the points to ensure longevity and prevent premature failure.
- Properly adjusting the point gap and, more importantly, the dwell angle is critical for optimal engine performance.
- Symptoms like hard starting, rough idle, and poor acceleration are strong indicators of failing ignition points.
Understanding Your Skylark's Ignition System
The 1968-1972 Buick Skylark uses a classic points-and-condenser ignition system. The ignition contact set, or points, are a critical wear item in this setup. Think of them as a rapidly firing mechanical switch. Over time, the contacts can burn, pit, or the rubbing block that rides on the distributor cam can wear down. This wear is normal and requires regular service to keep your engine running smoothly. Unlike modern cars, there is no computer controlling the spark; it's all done mechanically through the distributor.
Symptoms of a Failing Ignition Contact Set
When your ignition points start to fail, your Skylark will let you know. The symptoms can start small and get worse, potentially leaving you stranded.
- Hard Starting or No-Start: This is the most common sign. Worn or misaligned points can't create the clean electrical break needed for a strong spark. This results in a weak or non-existent spark at the plugs, making the engine difficult or impossible to start.
- Rough Idle and Misfires: If the points are pitted or dirty, they can't deliver a consistent spark. This can cause the engine to shake, run unevenly, and misfire, especially at idle.
- Engine Stalling: Worn points can cause the engine to stall unexpectedly, particularly at low speeds or when coming to a stop.
- Poor Acceleration and Reduced Power: A weak or inconsistent spark leads to inefficient combustion. You'll feel this as sluggishness, hesitation when you press the gas, and a general lack of power.
- Backfiring: Improperly timed sparks from worn points can cause fuel to ignite in the intake or exhaust manifold, resulting in a backfire.
A Note on Recalls and TSBs
For vehicles of this era, formal digital records of Technical Service Bulletins (TSBs) or recalls for a part like ignition points are virtually nonexistent. Searches of the NHTSA database and other sources show no active recalls for the ignition contact set on the 1968-1972 Skylark. Any known issues are related to the inherent nature of points as a regular maintenance item.
Choosing the Right Aftermarket Ignition Contact Set
Since genuine GM OEM points are no longer readily available, you'll be choosing from aftermarket brands. For your Skylark, Accel and Standard Ignition are two common choices.
- Standard Ignition (Standard Motor Products): This brand is a long-time manufacturer of quality replacement parts that meet or exceed original specifications. For a stock or lightly modified Skylark, a Standard set is a reliable, budget-friendly choice that will perform just like the original.
- Accel: Accel is often seen as a performance brand. They may offer "heavy-duty" points with a stronger spring designed to prevent "point bounce" at high RPMs. For a daily-driven or stock Skylark, this is usually unnecessary and the higher spring tension can cause faster wear on the distributor's rubbing block. However, many classic car owners use Accel points with good results, especially in performance applications.
Always Replace the Condenser
The condenser is a small capacitor that prevents the points from arcing and burning out prematurely. Modern replacement condensers have a reputation for inconsistent quality. Regardless, you should always replace the condenser when you replace the points. It's a cheap part and is critical for the life of your new points. Many contact sets are sold as a kit that includes a new condenser.
Cost of Replacement
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Ignition Contact Set | $21.11 - $37.15 |
| Shop Labor | $60 - $120 |
Frequently Asked Questions (FAQ)
How often do I need to replace my ignition points?
As a general rule, standard ignition points should be checked and adjusted every 6,000 miles and replaced every 12,000-15,000 miles. This is a regular maintenance task for a classic car like the Skylark.
What does "setting the dwell" mean?
Dwell angle is the amount of time, measured in degrees of distributor rotation, that the points are closed. This time allows the ignition coil to build up a full charge. Setting the dwell correctly with a dwell meter is crucial for engine performance. An incorrect dwell angle can lead to a weak spark or premature coil failure.
Can I just gap the points with a feeler gauge?
Yes, you can set the initial gap with a feeler gauge. However, setting the dwell with a meter is the more accurate method to ensure the ignition system is performing optimally. The point gap is a mechanical measurement, while dwell is an electrical measurement of the actual performance.
Should I upgrade to electronic ignition?
Many owners of classic cars like the Skylark choose to replace the points system with an electronic ignition conversion kit (like a Pertronix unit). These kits eliminate the need for regular point replacement and can offer a more consistent spark. However, a properly maintained points system is very reliable. This guide focuses on keeping the stock-style system running correctly.
Technical Specifications
The key specifications are the point gap and the dwell angle. For the Buick V8 engine, the dwell angle should typically be set to 30 degrees. The point gap is usually around 0.016 to 0.019 inches, but using a dwell meter is the preferred and more accurate method of adjustment.
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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.