Keeping my classic engines in tip-top shape isn't just a chore; it's a ritual. I kept this secret for a long time, but I decided to share it with you: how I maintain the engines of my classics.
Every tightened nut, every drop of oil, every thorough check is part of a process that not only keeps the car alive, but also connects me to its history. There's nothing like the sound of an engine starting smoothly and powerfully after a good maintenance session. This is how I do it.
1. Oil change: the soul of the engine
If there's one thing I've learned over the years, it's that oil is the soul of the engine. I never let too much time go by without changing it. Depending on the use and engine type, I change it every 3,000 to 5,000 kilometers. And be careful, I always use mineral or semi-synthetic oils with the appropriate specifications for classic engines. Avoid modern oils that can affect the original seals and gaskets.
2. Spark plugs and wires: guaranteed spark
There's nothing worse than an engine that loses power due to a weak spark. Every so often, I check the spark plugs and wires. If they're charred or worn, I replace them without a second thought. And the wires, even if they look good on the outside, can be losing efficiency if they're older.
3. Cooling system: the enemy of overheating
One of the most common problems in classic cars is overheating. To prevent this, I check the radiator regularly, clean the lines, and change the coolant according to the manufacturer's recommendations. If I notice any leaks, I don't ignore them. It's best to fix them immediately before they become a mechanical disaster.
4. Carburetor or injection: the heart of performance
Many of my classics have carburetors, and keeping them clean is key. Every so often, I disassemble them, clean the jets, and adjust the air-fuel mixture. If it's a fuel-injected car, I check the injectors and sensors. There's nothing like a well-tuned engine that responds seamlessly to the accelerator pedal.
5. Belts and hoses: details that make the difference
It doesn't matter how well you maintain your engine if an old belt breaks in the middle of the road. I always check the timing, alternator, and fan belts. If I notice cracks or wear, I replace them before they cause problems. The same goes for the radiator and fuel system hoses.
6. Filters: lungs of the engine
Air, oil, and fuel filters perform a vital function. I don't let years go by without changing them. A dirty air filter can affect power and fuel economy, while a clogged oil or fuel filter can cause premature engine wear.
7. Battery and electrical system: without power, there is no life
A flawless engine is useless if the electrical system is failing. I check the battery, clean the terminals, and verify that the alternator is charging properly. I also check the fuses and connections to avoid unpleasant surprises.
8. Constant testing and adjustments
Every so often, I take my classics out for a run and listen to the engine. If I notice any strange vibrations, odd sounds, or any loss of power, I get to work. Sometimes, a timely tune-up can prevent a costly repair.
Love is in the details
How I maintain the engines of my classics isn't just a matter of mechanics; it's a form of respect for these machines that have stood the test of time. With patience, dedication, and proper care, these engines will continue to roar for many years to come.
If you share this passion, you know what I'm talking about. And if you're just starting out in this world, remember: a well-maintained classic is a timeless classic.
+See more: Importance of oil changes in collector cars
Passionate about classic cars for as long as he can remember, Javier Montoro has dedicated his life to the search, restoration, and preservation of true gems on wheels. With years of experience purchasing, restoring, and maintaining vintage vehicles, he shares his knowledge, stories, and lessons learned on this blog.