Mike Mechanic

Mike Mechanic All about cars from a New York mechanic!
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06/24/2026

Hidden Car Features Most Drivers Never Use 😳🚗

Caption:
Your car is probably hiding features you've never used. From Auto Hold brakes and Lane Keep Assist to paddle shifters, hidden economy modes, and secret infotainment settings most drivers only use a fraction of what their vehicle can actually do. Which feature did you discover today? 👇

06/23/2026

Why Modern Cars Are Ditching a Cylinder ⚙️🚗

Three cylinders isn’t four supposed to be better? 😳

For decades, the four-cylinder engine was the standard smooth, reliable, and efficient. But modern engineering had a new challenge: how to reduce fuel use and emissions without losing performance.

The solution? Remove a cylinder.

A three-cylinder engine has fewer moving parts, less internal friction, and lower weight. That means better fuel economy and reduced emissions right from the start. 🌍⚡

06/21/2026

Intercooler Power Explained

An intercooler quietly transforms turbocharged performance by cooling compressed air before it enters the engine. Cooler air is denser, carrying more oxygen, which improves combustion efficiency. This results in stronger power, smoother boost, and consistent performance while preventing overheating and loss of efficiency during high pressure driving conditions.

06/20/2026

1969 Mustang Roars

Back in 1969, the Ford Mustang didn’t just arrive it roared into the heart of Detroit’s muscle car era. With a fierce V8 engine, aggressive stance, and raw power, it defined American performance, turning every road into a battlefield of speed, control, and adrenaline.

06/19/2026

Why Supercars Put the Engine in the Middle ⚡🏎️

Have you ever noticed something unusual about supercars? 😳
The engine isn’t in the front and not fully in the back either.

It’s in the middle.

This is called a mid-engine layout, and it’s one of the biggest secrets behind supercar performance.

By placing the engine between the driver and the rear axle, engineers achieve near perfect weight distribution often close to 50/50 balance. ⚖️

◆ This is the story of an experimental aircraft, the Debay Dragonfly Mark II, which crashed shortly after takeoff in Min...
06/19/2026

◆ This is the story of an experimental aircraft, the Debay Dragonfly Mark II, which crashed shortly after takeoff in Minnesota in 2003. The pilot was seriously injured, and the plane was destroyed. The investigation, however, did not find a mechanical failure of the engine itself. Instead, it discovered that the pilot had intentionally been flying with a known and documented problem with the engine's Revflow slide-type carburetor.

◆ The pilot had a website detailing his struggles with the carburetor. He documented that the mixture was "VERY sensitive" and that leaning was required in cruise flight or "the engine sputters from being too rich!". He also wrote that on landing rollout, the engine "seems quite rich and likes to die out". The website also stated that the pilot was aware of these issues but was still flying the aircraft. The NTSB report concluded that the pilot intentionally operated the aircraft with a known deficiency in the carburetor calibration.

◆ This is a rare and tragic story of mechanical failure caused by human decision. The pilot knew the carburetor was unpredictable but chose to fly anyway. The NTSB's probable cause was the pilot's intentional operation with a known deficiency, with the improperly calibrated carburetor and the trees as contributing factors. It serves as a stark warning that ignoring mechanical problems, even in an experimental aircraft, can have deadly consequences.

[Disclaimer: This image is for illustrative purposes only.]

◆ The Volkswagen 2.5-liter inline-five cylinder is a unique and quirky engine, known for its distinctive sound and surpr...
06/19/2026

◆ The Volkswagen 2.5-liter inline-five cylinder is a unique and quirky engine, known for its distinctive sound and surprising reliability for a five-cylinder. However, a recent teardown by the I Do Cars YouTube channel reveals a familiar story: the death of this Volkswagen engine was caused by a lack of basic maintenance. The engine, removed from a 2011 Jetta, had been left outside, making the investigation challenging, but the underlying cause was clear.

◆ The investigation revealed heavy varnish, suggesting the oil changes were infrequent. The timing chain had broken guides, which likely caused a timing failure in the interference engine. When the head was removed, two pistons showed evidence of hitting the valves. Once the oil pan came off, the evidence was overwhelming: two spun rod bearings were discovered, and one piston had gotten so hot it melted on one side.

◆ The culprit was oil starvation, resulting from either low oil levels or a loss of viscosity. The owner likely ignored the initial warning signs, and the engine was driven until it catastrophically failed. The teardown serves as a grim reminder that preventative maintenance is the only defense against such destruction. The difference between a running engine and a pile of scrap metal is often just a few quarts of fresh oil.

[Disclaimer: This image is for illustrative purposes only.]

◆ The Audi EA839 3.0 TFSI V6, which powers the S4, S5, SQ5, A6, A7, Q7, Q8, and several Porsches, is an engine beloved f...
06/19/2026

◆ The Audi EA839 3.0 TFSI V6, which powers the S4, S5, SQ5, A6, A7, Q7, Q8, and several Porsches, is an engine beloved for its performance and tuning potential. However, it has also earned a reputation for a rare but serious internal problem. A recent teardown of a 2021 Audi S4, which had only 75,600 km and a full service history, tells the story. There were no warning lights, no suspicious noises, and the oil filter was clean. On the surface, the engine was a "good student".

◆ The truth was revealed only when the cylinder heads were removed. Three cylinders displayed deep vertical scratches, and the piston skirts were significantly scored, indicating that the metal had been grinding directly against the cylinder walls. The cause appears to be a design issue where the piston rocks slightly within its cylinder, causing the skirt to wear prematurely. Metallurgical analysis has also pointed to the piston's oil drain holes, which act as "stress risers" that can weaken the metal and lead to failure.

◆ The failure rate is reportedly less than 5%, but the cost is enormous. Repairs can run between €3,000 and €8,000. Audi has acknowledged the risk of piston skirt wear and extended the warranty for certain vehicles to 8 years. For owners, the first signs of trouble can be a dull clattering, oil consumption, or a persistent cold-start noise. This case proves that even the most pristine-looking engine can hide a fatal flaw, a risk that can only be definitively discovered through invasive inspection.

[Disclaimer: This image is for illustrative purposes only.]

◆ The Stellantis Pentastar 3.2L and 3.6L V6 is a common engine found across the Jeep, Ram, Dodge, and Chrysler product l...
06/18/2026

◆ The Stellantis Pentastar 3.2L and 3.6L V6 is a common engine found across the Jeep, Ram, Dodge, and Chrysler product line. While a solid design, it has a reputation for a frustrating and often invisible problem: engine misfires. One mechanic, Victor Shack, has issued a warning about these engines, stating they are nearly impossible to diagnose and fix, even for some dealerships. He describes a case where a 2015 Town & Country had a cylinder 1 misfire that persisted after a shop replaced the crankshaft sensor, camshaft sensors, ignition coils, spark plugs, and even sent the cylinder head to a machine shop.

◆ The problem lies with the valvetrain, specifically the rocker arms on cylinder one. The small bearings on the rocker arms develop flat spots and become out-of-round, causing the valves to not open completely. The diagnostic challenge is that the rockers and camshafts can all look visually perfect with no noise. As Shack explains, "We've experienced this [expletive] before where we've taken the head off three times cause we couldn't find the goddamn failure, everything looked great".

◆ The solution is to replace the valve rocker arms, which is a much cheaper and simpler repair than replacing the entire engine. Some mechanics recommend replacing all the rocker arms, valve springs, and lifters if one fails, and it is important to inspect for camshaft damage. This problem illustrates how a seemingly minor and invisible component failure can lead to significant frustration, misdiagnosis, and expensive repairs for owners.

[Disclaimer: This image is for illustrative purposes only.]

◆ Toyota's 3.4-liter V-6, part of the VZ family, is renowned for being one of the most reliable and stout powertrains ev...
06/18/2026

◆ Toyota's 3.4-liter V-6, part of the VZ family, is renowned for being one of the most reliable and stout powertrains ever built. It powered everything from the 4Runner and Tacoma to the Land Cruiser Prado and Hilux. But even the best can fail. A recent teardown of a 5VZ-FE engine, acquired as a core trade, revealed a rare but catastrophic failure. The engine had thrown a rod, and as the host of the I Do Cars YouTube channel discovered, the damage was extensive.

◆ The teardown revealed pieces of connecting rod strewn about the oil pan, and the loose pieces had punched a hole through the engine block. The suspected culprit, however, was not a manufacturing defect but a single component failure. The team concluded that a stuck fuel injector had dumped an excess of fuel into one of the cylinders. This prevented the piston from compressing the fuel-air mixture, leading to the violent destruction of the connecting rod and subsequent carnage.

◆ The video highlights a common theme in engine failures: a simple, preventable issue causing total destruction. In this case, a $1,000 replacement engine was cheaper than rebuilding the damaged unit. It serves as a stark reminder that even the most reliable engines are vulnerable to the failure of one small part, turning a routine component into a catastrophic engine-killer.

[Disclaimer: This image is for illustrative purposes only.]

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