1968 Ford Mustang Coupe – Mastering Maintenance And Everyday Driving
A 1968 Ford Mustang Coupe is a classic icon, but keeping this vintage beauty running smoothly requires specific attention. This guide focuses on essential maintenance, common troubleshooting, and practical advice for owners who want to enjoy their classic Mustang daily or on weekend cruises.
Welcome to the world of classic American muscle! Owning a 1968 Ford Mustang Coupe is a dream for many, offering that unmistakable style and rumble. But beyond the sheer joy of driving such an automotive legend, lies the responsibility of keeping it in top mechanical shape. This article dives deep into the practicalities of maintaining your ’68 Mustang Coupe, covering everything from routine checks to tackling common quirks, ensuring your classic is as reliable as it is beautiful.
The allure of the 1968 Ford Mustang Coupe is undeniable. It’s a piece of automotive history, a symbol of freedom and style that still turns heads today. For owners, the journey is as much about the drive as it is about the care and attention that goes into preserving this iconic machine. Whether you’re a seasoned gearhead or new to the classic car scene, understanding the nuances of your Mustang is key to enjoying it to its fullest.
This comprehensive guide is designed to empower you with the knowledge to keep your 1968 Ford Mustang Coupe performing at its best. We’ll cover essential maintenance schedules, common issues, and practical tips for daily driving and occasional road trips. Let’s get started on ensuring your classic Mustang remains a joy to own and drive for years to come.
Understanding Your 1968 Ford Mustang Coupe’s Heartbeat: Engine Basics
The engine is the soul of any classic car, and for the 1968 Ford Mustang Coupe, this often means a robust V8, though inline-six options were also available. Keeping this heart healthy starts with understanding its fundamental needs. Regular oil changes are paramount; use a high-quality conventional oil with a zinc additive, crucial for flat-tappet camshafts found in many classic Ford engines to prevent premature wear.
Check your oil level frequently. A dipstick reading is your first line of defense against lubrication issues. Aim for the full mark. If you notice the oil level dropping significantly between changes, it could indicate a leak or internal engine problems that need prompt attention. Always use a new oil filter with every oil change.
Beyond oil, coolant is vital for temperature regulation. The cooling system in a 1968 Mustang Coupe is typically a robust setup, but hoses can degrade over time. Inspect all coolant hoses for cracks, swelling, or stiffness. Replace them proactively, especially before long drives or extreme weather. Ensure your radiator is clean and free of debris, and consider a flush and fill with a 50/50 mix of coolant and distilled water every two years.
Essential Maintenance for Your Classic Mustang Coupe
Consistent maintenance is the cornerstone of classic car ownership, and your 1968 Ford Mustang Coupe is no exception. A proactive approach saves you from costly repairs and ensures reliability. Think of it as a partnership with your vehicle; it asks for care, and it rewards you with a dependable and thrilling driving experience.
Fluid Checks: More Than Just Oil
While engine oil is critical, don’t overlook other vital fluids. The transmission fluid, whether manual or automatic, needs regular inspection. For automatics, check the fluid level and condition when the engine is warm and running, in park. It should be reddish-pink and not smell burnt. For manual transmissions, check the level via the fill plug on the side of the gearbox.
Brake fluid is another often-neglected component. Over time, brake fluid can absorb moisture, reducing its effectiveness and potentially corroding internal brake components. Most 1968 Mustang Coupes use DOT 3 or DOT 4 fluid. Check the master cylinder reservoir regularly and top it off if needed. If the fluid appears dark or murky, it’s time for a complete brake fluid flush and bleed.
Power steering fluid (if equipped) also needs attention. Low levels can lead to noisy steering and premature pump wear. Inspect the reservoir and add the correct type of fluid as specified in your owner’s manual or a reliable service manual.
Ignition System Tune-Up: Sparking Performance
The ignition system is responsible for delivering that crucial spark to ignite the fuel-air mixture. A well-tuned ignition system means smoother running, better fuel economy, and easier starting. This includes checking and potentially replacing spark plugs, spark plug wires, the distributor cap, and the rotor.
When replacing spark plugs, use the correct heat range and gap specification for your engine. Old, fouled plugs can cause misfires and poor performance. Inspect the spark plug wires for any signs of cracking or damage; brittle wires can lead to weak sparks.
The distributor cap and rotor are wear items. Look for carbon tracking, corrosion, or cracks on the cap, and check the rotor for signs of burning or damage. Replacing these components as part of a regular tune-up can prevent intermittent misfires and starting problems.
Fuel System Health: Delivering the Goods
A clean and efficient fuel system is essential for your 1968 Ford Mustang Coupe to run properly. Over time, fuel tanks can accumulate rust and debris, and fuel lines can degrade.
Periodically inspect your fuel lines for any signs of leaks, cracks, or corrosion. If you notice any issues, replace them immediately, as fuel leaks are a significant fire hazard.
The fuel filter is a relatively inexpensive part that plays a crucial role in preventing dirt and debris from reaching your carburetor. Replacing the fuel filter annually or every other year, depending on your driving habits and fuel quality, is a wise preventative measure. If your Mustang has been sitting for a long time, a thorough cleaning or even replacement of the fuel tank might be necessary.
Troubleshooting Common 1968 Mustang Coupe Issues
Even with meticulous care, classic cars can present unique challenges. Understanding common problems and their solutions can save you time, money, and frustration.
Starting Problems: When Your Mustang Won’t Fire Up
- No Crank, No Start: This often points to electrical issues. Check the battery terminals for corrosion and ensure they are clean and tight. Test the battery voltage. If the battery is good, investigate the starter solenoid and the starter motor itself. A faulty ignition switch can also be the culprit.
- Crank, No Start: This suggests the engine is turning over but not igniting.
- Fuel: Is fuel reaching the carburetor? Check if the fuel pump is working (you should hear it prime if electric, or feel it operate if mechanical) and if the carburetor bowl has fuel. A clogged fuel filter or a faulty fuel pump are common causes.
- Spark: Are the spark plugs firing? You can test this by removing a spark plug wire, inserting a spare plug, grounding the plug against the engine block, and cranking the engine. If you see a strong spark, the ignition system is likely working. If not, trace the problem back through the distributor, coil, and wiring.
- Air: Ensure the air filter isn’t completely clogged, although this is less common as a primary cause for a no-start.
Overheating: Keeping Your Classic Cool
Overheating can cause severe engine damage. Several factors can contribute to a 1968 Mustang Coupe running too hot.
- Low Coolant Level: The most obvious cause. Check for leaks in hoses, the radiator, the water pump, or the heater core.
- Faulty Thermostat: A thermostat that’s stuck closed will prevent coolant from circulating through the radiator.
- Clogged Radiator: Internal passages can become blocked with sediment, reducing cooling efficiency. A radiator flush or professional cleaning might be needed.
- Bad Water Pump: A failing water pump won’t circulate coolant effectively. Listen for grinding noises from the pump area.
- Fan Issues: Ensure the fan is spinning correctly. For mechanical fans, check the fan belt tension. For electric fans (if added as an upgrade), verify their operation.
Leaks: Identifying and Fixing Drips
Leaks are a common concern for classic cars. The key is to identify the source.
- Oil Leaks: Check valve cover gaskets, oil pan gaskets, rear main seals, and oil filter seals.
- Coolant Leaks: Inspect hoses, radiator, water pump, thermostat housing, and heater core.
- Fuel Leaks: Examine fuel lines, carburetor gaskets, fuel pump, and fuel tank.
- Power Steering Leaks: Look at hoses, the steering gear, and the pump reservoir.
Use a mechanic’s creeper and a good flashlight to get underneath and pinpoint the origin of the drip. Clean the area around the suspected leak to help track its source.
Performance Enhancements and Modifications for Your Coupe
While maintaining originality is a priority for many, some owners choose to enhance their 1968 Ford Mustang Coupe’s performance. These modifications should be approached thoughtfully, considering the car’s overall balance and your intended use.
Carburetor Upgrades: Fueling Better Performance
The stock carburetor on your 1968 Mustang Coupe, whether a two-barrel or a four-barrel, can often be improved. Upgrading to a modern, more efficient carburetor can offer better throttle response and fuel economy. Brands like Edelbrock or Holley offer popular options that can bolt onto your existing manifold.
Ensure the new carburetor is properly sized for your engine’s displacement and intended use. A carburetor that is too large can lead to poor idling and fuel wastage, while one that’s too small will restrict performance. Proper tuning after installation is crucial.
Ignition System Modernization: Brighter Sparks
Electronic ignition systems, like those from Pertronix or MSD, offer a significant upgrade over traditional points and condensers. These systems provide a stronger, more consistent spark, leading to easier starting, smoother running, and improved performance. They are also virtually maintenance-free compared to points.
Exhaust Systems: Unleashing the Roar
An upgraded exhaust system can not only improve performance by reducing backpressure but also deliver that classic V8 rumble. Dual exhaust systems are a popular choice for Mustang owners. Options range from simple bolt-on kits to custom-fabricated systems. Consider the sound level and local noise regulations when making your choice.
Safety First: Driving and Maintaining Your Classic
Safety is paramount, whether you’re performing maintenance or enjoying a spirited drive in your 1968 Ford Mustang Coupe.
Pre-Drive Checks: A Quick Walk-Around
Before each drive, take a moment for a quick walk-around.
- Check tire pressure and condition.
- Ensure all lights are working (headlights, taillights, turn signals, brake lights).
- Look for any obvious fluid leaks under the car.
- Test the brakes by gently applying pressure as you start moving.
Braking System Integrity: Stopping Power
The braking system on a 1968 Mustang Coupe might be drum brakes or front discs, depending on the original options. Regardless, ensuring their proper function is critical.
- Brake Fluid: As mentioned, keep it fresh.
- Brake Pads/Shoes: Inspect for wear. If you have drum brakes, check the shoes. For disc brakes, inspect the pads.
- Brake Lines and Hoses: Look for any signs of corrosion, cracking, or leaks.
If your Mustang is still equipped with all-drum brakes, consider a front disc brake conversion. This is a popular and highly recommended upgrade for significantly improving stopping power and safety.
Seatbelts and Restraints: Essential Protection
If your 1968 Ford Mustang Coupe wasn’t originally equipped with seatbelts, or if the existing ones are worn, installing or replacing them is a crucial safety upgrade. Modern lap belts or three-point harnesses can make a significant difference in occupant safety.
Frequently Asked Questions About Your 1968 Mustang Coupe
What kind of oil is best for a 1968 Ford Mustang Coupe?
For engines with flat-tappet camshafts, a conventional oil with a high zinc content (like ZDDP) is recommended to protect the camshaft. Consult your owner’s manual or a classic Mustang specialist for specific weight recommendations (e.g., 10W-30 or 10W-40).
How often should I change the oil in my classic Mustang?
It’s generally recommended to change the oil and filter every 3,000 miles or at least once a year, whichever comes first, especially if the car is driven infrequently.
Can I drive my 1968 Mustang Coupe in the rain?
Yes, with proper maintenance, your 1968 Mustang Coupe can be driven in the rain. Ensure your tires have good tread, your wipers are functional, and your braking system is in excellent condition. However, driving in heavy rain or on unpaved, muddy roads should be approached with caution due to the age of the vehicle and its components.
What are the most common engine options for a 1968 Ford Mustang Coupe?
The 1968 Mustang Coupe was commonly offered with a 200 cubic inch inline-six engine, or various V8 options including the 289 cubic inch and the 302 cubic inch Windsor engines. Larger 390 cubic inch FE engines were also available.
Are parts readily available for a 1968 Mustang Coupe?
Yes, parts for the 1968 Ford Mustang Coupe are generally quite accessible. Many reproduction parts are available from specialized classic Mustang parts suppliers, and used parts can often be found through online marketplaces and Mustang clubs.
Owning and maintaining a 1968 Ford Mustang Coupe is a rewarding experience. By understanding its needs, performing regular maintenance, and addressing issues promptly, you can ensure your classic pony car remains a reliable and enjoyable ride for years to come. So, grab your tools, consult your service manual, and embrace the journey of keeping this automotive icon on the road. Stay safe and keep those wheels turning!
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