Doing This Will Make Your Engine Run Better (2023)


Doing This Will Make Your Engine Run Better, DIY life hacks and car repair with auto mechanic Scotty Kilmer. Life hack that will make your engine run better. How to make engine run like new. How to make engine run smoother. Engine running rich. How to fix a lean engine. Engine problems and engine repair. Engine life hacks. Car Advice. DIY car repair with Scotty Kilmer, an auto mechanic for the last 52 years.

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3. My Fancy (Originally $5,000) Professional Scan Tool:
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5. Basic Mechanic Tool Set:
6. Professional Socket Set:
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9. Battery Pack Car Jump Starter:

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This is the people's automotive channel! The most honest and real car channel around, never any sponsored content, just the truth about everything! Learn how to fix your car and how it works. Get a chance to show off your own car on Sundays. Or show off your own car mod on Wednesdays. Tool giveaways every Monday to help you with your own car projects. We have a new video every day! I've been an auto mechanic for the past 50 years and I'm here to share my knowledge with you.

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Rev up your engines today I'm gonna show you how to fix a very, common problem in modern cars an oxygen sensor system.

Now all modern cars use a variety of oxygen sensor.


This is an air fuel ratio sensitive these things screw into the exhaust system and they measure indirectly.

What kind of gases are in the exhaust to make the car run perfectly and not pollute.

Now this particular car has got four of them on each.

In this case it's trip too cold to check.

Engine light is on in this case it's beyond five one he had oxygen sensor.

Heater control circuit low bank, two sensor, one- the sensors, sends feedback to the computer.

They can be affected by if your cars running rich lean if you got a bad catalytic converter.

If you've got bad fuel, there's all kinds of reasons that they can trip.

Codes for.

Just the sensor.

This is the Lexus a toyota product and they have a known problem inside these stupid little sensors.

Is a heater kind of like your hair? Dryer heater and that's so that when you start the car immediately, it heats up and it works sufficiently at lower operating temperatures when you start to come, and these stupid heaters inside those sensors break down all the time on these now the car can run perfectly fine.

This thing's running perfectly fine, but you can't get your car inspected because it's got that code for a problem within our pollution system.

The oxygen sensor, so in the case of this Lexus, most logical thing to do is to just change out that sensor.

Now it's called bank two sensor, one, whether it's for minor.

How do you know which one that is well, here's how you tell on any engine.

This is a v8, so there's two banks, Bank 1 and Bank 2.

Well, bank one is the side of the engine.

It has the number one cylinder and bank two is the opposite side.

So in case of this Lexus, the driver side has the number one cylinder.

So bank number two is the opposite side.

The passenger side and the cold goes for bank two sensor, one well sensor.

One is the sensor before the catalytic converter, so it's the first one off of the exhaust manifold Jack it up and see where it is.

This thing is so low to the ground.

You got a jack it up to get it under it.

Look at anything.

We don't want to be squashed, so we'll put a jack stand.

Now we go under the car, you see, you really can't see anything cuz all this plastic crap is in anyway, so we gotta take some of the plastic crap out of the way.

So we can work on sure we'll take a bunch of these off and you know we go up here.

We can see the oxygen sensor right there, there's the front one.

If we go back past the cat, there's the rear one behind a catalytic converter, but we're changing the front one.

That's in the front now.

The first thing you have to do is disconnect the clip and it is a stinker.

You got a squeeze and pull, but eventually, as you can see, I've got that and unplugged.

It is a real stinker.

These are one of the worst design plugs on the planet.

I, don't know why Toyota makes these they're absolute scumbags yeah they're real, easy to put together because they click on, but they're almost impossible to get off.

You just have to keep squeezing and squeezing until they finally click and snap off.

Now, when we go back to the other end here, where the oxygen sensor is, you need an oxygen sensor, removing the tool you'll, never get it off.

Otherwise, the tool itself just slips over the sensor and it's on there and you put a ratchet on it, there's a better shot where you can see it.

There's the wrench and you put a ratchet on that and pull on it.

There's the ratchet with a long arm fits on it and you just and it comes off it's loose.

You can just get your hand, I know, spin off, you can see it just spins.

Really you just keep turning it until it comes off there.

It is we got it out.

Can you just get your new oxygen sensor and screw it in the hole up? It goes just screws in by hand.

You spin it in and once it's pinned in, you put the wrench and get it nice and tight there.

It is it's down inside and now you want to make it tight cuz.

You don't want leak and, of course, fish the line through here so that you can plug it into the other end and click it in now.

You can see here, it's a one hand job clicking it in there cause collect they're, very easy to put together they're hellacious, take apart, but they're made for building not for taking apart and, of course, you gotta bolt all the stupid plastic crap back on to knowing, but that's how they make cars these days and voila, we'll just let it down and take it for a road test down.

She goes and away.

We go and, as you can see now, the check engine light is off.

All those lights went off so the next time your car has a problem with the oxygen sensor system.

Now you know what to do.

So if you never want to miss another one of my new car repair videos, remember to ring that bell.


What can you do to make your car run better? ›

Here some of the cost-effective ways you can make your car run smoother:
  1. Remove Unnecessary Weight.
  2. Change the Spark Plugs.
  3. Change the Air Filters.
  4. Invest in Decent Tires.
  5. Replace Shocks and Suspension Bushes.
  6. Upgrade Brakes.
  7. We Help Cars Run Smoothly.

What are the 4 things to make a engine run? ›

Most of these are four-stroke cycle engines, meaning four piston strokes are needed to complete a cycle. The cycle includes four distinct processes: intake, compression, combustion and power stroke, and exhaust.

What are the three things to make an engine run? ›

Internal combustion engines use fuel to create an explosion (power) to move a piston down. Although there are many different designs to an internal combustion engine, there are three crucial components needed to make one run, a fuel to burn, oxygen to support combustion, and an ignition source to start combustion.

What makes a car accelerate faster? ›

Torque is responsible for making your car accelerate quickly. Horsepower helps determine your car's top speed. EVs usually have more torque than gasoline-powered cars, making them accelerate quicker.

How do I increase my engine idle rpm? ›

In order to increase the engine idle speed, tighten the screw clockwise. You can use a Phillips head screwdriver to turn the idle screw clockwise. Turn the screw once or twice to make minor adjustments in the idle speed, or three-four times to significantly increase the idle RPM.

Why is my car struggling to run? ›

There are a number of reasons why your car might be slow to start but runs as-normal once it gets going. Causes can vary from weather conditions to battery health, wiring issues, starter motor concerns and fuel-pump health.

What makes the engine run? ›

What powers those pistons up and down are thousands of tiny controlled explosions occurring each minute, created by mixing fuel with oxygen and igniting the mixture. Each time the fuel ignites is called the combustion, or power, stroke.

What is an engine tune up? ›

An engine tune-up is the process of inspecting and replacing components of the engine that are essential to ignition and engine operation. A comprehensive tune-up can include: Replace spark plugs and wires/coil boots. Set ignition timing - if applicable. Replace engine air filter.

What makes engine speed? ›

Engines are rotating machines and the speed is measured in revolutions per minute - that is how many full turns the engine does every minute. The faster the engine runs, the more complete rotations it does per minute and the more power it produces.

What increases acceleration? ›

Force is directly proportional to acceleration (force ~ acceleration) As force increases acceleration increases. Acceleration is indirectly proportional to mass (force ~ 1/mass) As mass increases acceleration slows.

How do you increase engine torque? ›

Two Ways to Increase Torque

Improving your exhaust headers and using wider valves can help you with ventilating the cylinder more completely, allowing more air and fuel to come in during the next cycle. This improves the performance and torque of the vehicle.

What is the best idle RPM? ›

The idle speed should feel consistent without skipping or slipping. In most of today's cars, an idle speed of 600 to 1000 RPMs is average. If your car is idling rough, though, it won't feel smooth. The RPMs will jump up and down, for example, or they'll fall below 600 RPM (or whatever is typical for your vehicle).

How do I increase idle vacuum? ›

If after adjusting the first idle mixture screw the engine vacuum drops, then return to the base setting and turn the mixture screw outward roughly 1/8th turn. This first adjustment sequence is to place the idle mixture screws on both sides of the carburetor to achieve the highest idle vacuum setting possible.

Why is my car struggling when I accelerate? ›

Trouble accelerating can come from a few different engine issues. These include, but are not limited to, dirty fuel injectors, low fuel pressure, and restricted airflow. A problem with the mass airflow sensor, throttle position sensor, or engine speed sensor can also cause a car to have difficulty picking up speed.

How often do you need to change spark plugs? ›

FACT #4: YOU SHOULD CHANGE SPARK PLUGS EVERY 100K MILES OR SO. So, if good spark plugs are the key to avoiding these issues, how long do spark plugs last, exactly? The general rule of thumb about how often to change spark plugs is that they should be replaced after about 100,000 miles of driving.

Why does my car run but won't accelerate? ›

The most typical causes of a car not accelerating while driving include a faulty sensor, contaminated fuel or air filters, or a faulty timing belt. Generally, this isn't something you should ignore.

What causes a bad engine? ›

The most common reasons for poor engine combustion is due to broken valve seals, holes within cylinders and overused piston rings, forcing air to leak out. One of the easier engine faults to diagnose is leaking engine coolant.

Can Autozone do a tune-up? ›

AUTOZONE. Regular ignition, tune-up and routine maintenance can do wonders in protecting your prized possession for the long haul. Simple engine check-ups keep your vehicle preserved for many years and results in dependable performance.

How does a car act when it needs a tune-up? ›

Car Is Shaking

You may notice the vibrations only at certain speeds or just in the steering wheel, or they might be so forceful that you feel like the whole car could vibrate apart. However strong the vibrations are, they're a sign you need to come in for a tune-up fast.

What are signs of needing an engine tune-up? ›

5 Signs Your Car Needs A Tune-Up
  • 1 Decreased Fuel Mileage. ...
  • Weird or New Noises. ...
  • Diminished Braking Capacity. ...
  • Ignoring Warning Lights. ...
  • Engine Refusing To Start.
Aug 28, 2019

What controls engine speed? ›

Engine speed is controlled by a mechanical or electronic governor with a hydraulic actuator.

What controls engine RPM? ›

The answer is the crankshaft, which is spun by the motion of the pistons moving up and down in the cylinders as the spark plugs fire and detonate the fuel that's fed to the engine. The pistons are connected to the crankshaft by rods.

What speed is best for engine? ›

The ideal cruising speed for most cars and trucks is about 50 to 55 miles per hour (80.5 to 88.5 kilometers per hour).

How do you stop an engine from going bad? ›

5 Tips to Protect Your Engine
  1. Change your engine oil. A regular scheduled oil change is the most important thing you can do for your engine. ...
  2. Maintain cooling system. Ensure that your vehicle's cooling system is working properly. ...
  3. Change air filter. ...
  4. Change fuel filter. ...
  5. Don't ignore your check engine light.
May 10, 2016

Why is my car engine not running smoothly? ›

What could the problem be? There are a range of reasons why your car is juddering when you accelerate. Your vehicle could have dirty fuel injectors, a damaged fuel pump, a blocked catalytic converter, a faulty mass airflow sensor, broken spark plugs, or even an accumulation of moisture.

What can I add to my car for more horsepower? ›

How to Increase Your Car's Horsepower
  • Swap in a Performance Air Filter. Performance air filters are designed to increases air flow through your engine. ...
  • Install a Performance Exhaust System. ...
  • Install Performance Throttle Bod(ies) ...
  • Implement Forced Induction. ...
  • Remap your Car's ECU. ...
  • Use High Octane Fuel.
Oct 6, 2022

Why is my car running sluggish? ›

If your car feels sluggish, check your fuel pump, oxygen sensor, and spark plugs. These are common causes of a car feeling sluggish. A clogged air filter, dirty fuel injectors, or a bad catalytic converter can also cause your car to feel sluggish all of a sudden.

Can you save a bad engine? ›

If you do have a blown engine, whether or not it can be fixed depends upon the extensiveness of the damage. If the damage is minimal, and a few parts can be replaced, the problem can be fixed. However, if the damage is great and impossible to repair, you may need a complete engine replacement.

Can you rebuild a bad engine? ›

There are generally only two scenarios in which an engine cannot be rebuilt. First, the engine block has been damaged internally due to broken connecting rod or crankshaft. Second, the exterior of the engine block has been cracked. Otherwise, a rebuild is the best engine repair option.

Why does my engine hesitate when I accelerate hard? ›

This hesitation while accelerating can be the result of a number of issues, including something like a clogged fuel filter or even a broken fuel pump. Sometimes, something could also be wrong with the transmission.

Why does my car feel sluggish when accelerating? ›

Common causes of why a car feels sluggish when accelerating include dirty mass air flow sensor (MAF), faulty spark plugs, defective throttle position sensor, clogged catalytic converter, faulty oxygen sensor, clogged air filter, and fuel system malfunctioning.

Why does my car accelerate slowly when I press the gas? ›

When you press down the accelerator pedal and get minimal output, it could mean you have a problem with your fuel system. The most probable issue is a clogged fuel filter. Your fuel filter works to ensure that dirt and debris do not get into the fuel system.

How can I increase air flow to my engine? ›

Upgrading from a stock filter to a cold air intake is one of the best and easiest ways to increase horsepower. They have special filters that increase the surface area that pulls the air into your engine. Not only do they increase the amount of air that's taken in, but they do so while the air is still cool.

How can I increase my horsepower and fuel efficiency? ›

You may be pleased to learn that you can improve your fuel efficiency with five simple steps.
  1. Clear out the extra clutter. There are some items you should keep in your car, like an emergency kit. ...
  2. Limit idling. ...
  3. Keep your speed steady and within the speed limit. ...
  4. Check your tire pressure. ...
  5. Perform regular maintenance.

What are signs of a clogged fuel filter? ›

Here are five of the bad fuel filter symptoms to watch for:
  • You have a hard time starting car. If the problem is the fuel filter, and it isn't changed soon, you may find that your vehicle won't start at all.
  • Misfire or rough idle. ...
  • Vehicle stalling. ...
  • Fuel system component failure. ...
  • Loud noises from the fuel pump.

How do I stop sluggish acceleration? ›

Clean or replace your vehicle's air filter when your acceleration is acting sluggish. Put in new spark plugs when they go bad if your engine misfires and hesitates. Replace your vehicle's fuel filter when there's a delayed response when you accelerate.

Why is my car not picking up speed? ›

There are a few reasons why your car might be struggling to accelerate. It could be due to a problem with the timing belt, the spark plugs, or the fuel injectors. It could also be because you have a dirty air filter or a clogged fuel filter. The fuel system may also be low on fuel.

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