What is a Tune-up for a modern engine?
Carbon tracking on a 112,000 mile spark plug
From the mid 2000’s and up, the term Tune-up has been replaced with preventative maintenance. Newer engines don’t have anything to adjust. Everything is pre-set from the factory and you only replace parts if they fail or if you like to follow your maintenance schedule listed in the owner’s manual.
Converter meltdown due to a miss fire condition.
A modern engine can be adjusted through software changes, electronic tuning. Software tuning is not a normal undertaking and it voids the manufactures warranty. Programmers and software changes can build big power. All that power comes at a cost, more wear to the engine. When an engine replacement costs around 6,000.00 when it fails. What did you gain? You may also not pass emissions when it’s time for tags.
PCV hose failure.
You can make changes by putting aftermarket performance parts on the engine. Many parts you can bolt on will not void a warranty in most cases. Some bolt on parts can shorten engine life and cause emissions issues.
Replacing the exhaust system can have a big effect in power output. Exhaust changes effect how loud the tail pipe sounds. A loud exhaust is not needed to build power. The exhaust only needs to flow efficiently. Too much flow “big pipe exhaust systems” can hurt low rpm torque making your engine sluggish at lower speeds “city driving” and with the a/c on.
GM HEI Distributor showing a vacuüm advance and mechanical timing advancement weights.
The days of the real tune-ups, when engines had a real distributer, plug wires and a carburetor. It was a common to have 2 or 3 tune-ups a day back in the 80’s and 90’s. The carburetor needed adjustments at lease every time the season would change or around emissions time. The distributer had mechanical parts in it that would wear out. Hoses failed, air pumps died, catalytic converters would melt down. Yep, the good old days, nothing lasted for ever.
Modern cars have owners spoiled. driving a car a 100,000 miles or 10 years and never-changing the spark plugs, coils or installing a new fuel filter is amazing. Modern engines are built better and run cleaner. The improvements do have a price.
Ignition wire failure because it made contact with the hot exhaust manifold.
When parts fail, the price to fix the failure can be very large. When sticker shock sets in, many clients ask why is it so expensive.
I can only tell them that in the good old days it cost the same, it was just done in smaller installments over a 10 year period.
Over loading a circuit with aftermarket equipment is the most common reason for a fuse to fail “blow out” In a home, you have 
circuit breakers that protect each circuit within the home.
I have found ear rings, small tokens, and paper clips stuck in the 12V power sockets. A direct short to ground will cause a fuse to fail instantly. 
Once you remove the junk from the socket the fuse can be replaced. At our service desk we offer free 12V socket to USB power adapters to plug into the open 12V sockets, just to prevent issues like junk or coins from getting into the socket and shorting the terminals in the socket
You do not want to use an inverter larger than 150 watts on a 15 amp fused circuit. Most basic 12V sockets only have a 15 amp fuse to power the socket, and its easy to pop a fuse with an inverter, cell phone, and GPS navigation all plugged in at the same time.
We re-finish plastic head light lenses all the time.
Not all lenses can be saved. Rock pits, scratches, and plastic cracking can not be fixed with sanding if it’s too deep into the plastic surface. 20% of the head lamp housings I run across in my shop have major damage and need to be replaced.
The process of refinishing the plastic lens is fairly simple, and many parts stores sell DIY kits to sand, polish and protect the plastics.
So here it is in a nut shell, we clean the plastics, wet sand the imperfections out of the surface. Then use a 2 step polishing compound to restore the clear as glass look. Last step is a double coating of wax. Regular car war works fine for this.
Filters protect your car from harmful debris that can cause damage to internal moving parts. The engine, and transmission need service regularly to keep them alive and happy. So what about you, the driver? Back in the mid 80’s some European car manufactures started adding air filters to the A/C system. Mercedes-Benz called it a particulate filter and it protected the A/C evaporator core from getting contaminated with hair, lint, leaves, and other nasty things that could get pulled into the air intake of the A/C system. It also protected the inside of the car from dust and oder. Most of all, the clean air was a benefit to the driver. European cars started using “Cabin Air Filters” first, around the mid 80’s. In the late 90’s I started to see them in high-end Japanese cars, and by the mid 2000’s almost all cars had some type of Air Filter added to the A/C system. The filter works great till, till it looks like the one in the picture. A filter can only do its job if it can catch and hold the dirt. This filter is past its way past its prime. looking at it, you might think it’s very old, but it’s only 3 years old, but the car is only used in town and in 3 years has only driven 7,000 miles.
working on the car.
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