AUTONET TV

Fuel Injection Keeps Getting Better for Princeton Motorists

Princeton residents know that engines burn fuel to operate. Fuel is pumped from your fuel tank to your engine where it is squirted—or injected—into your engine's cylinders. This is the function of the fuel injectors.

There are two ways to inject fuel into an engine. Fuel needs air to burn, so in the first method, fuel is injected into a port and allowed to mix with air—and before it is drawn into the cylinders. In the second method, fuel is injected directly into the cylinders and mixes with air after it enters the engine.

Direct injection engines burn fuel more efficiently than conventional engines. Some models can deliver the power of a V8 with the economy of a V6.

For example, in one family of engines, the conventional version (a V6) delivers about 250 horsepower. The direct injection version delivers over 300 horsepower and gets about the same . The turbocharged version delivers 350 horsepower.

Why the big difference in power? Direct injection systems allow fuel to be squirted into the engine at hundreds of times the pressure of a conventional engine. This atomizes the fuel better (breaks it down into tinier droplets), which means more of it gets burned, which translates to more power for your engine. It also results in cleaner emissions and improved fuel economy.

Fuel injectors are precision instruments. They have to deliver the right amount of fuel at exactly the time the engine needs it. They are also engineered to inject fuel with a specific spray pattern. This spray pattern allows for maximum fuel efficiency and proper atomization.

Direct injection engines require a much higher degree of precision than conventional engines. For this reason, they are equipped with more sophisticated computers.

When fuel injectors get dirty, their precision drops off. The spray pattern won't be precise, and the timing of fuel delivery may be off. This decreases fuel efficiency and fuel economy for Princeton drivers as well as delivering less power to the engine.

Fuel injectors are not cheap to replace. Direct injection fuel injectors are even more expensive. And we're talking a mortgage payment to buy a set of new fuel injectors for a diesel engine.

So keeping your fuel injectors clean is just good auto advice for Princeton residents. The best way to do this is to change your air and fuel filters regularly and practice other habits of good vehicle care and preventive maintenance at KPS Princeton Garage in Princeton. Cleaning additives in your fuel can also help.

If you do end up with gum or varnish in your fuel system, you'll need a professional fuel system cleaning. This will clean out your whole system, including the injectors. The good news is that with proper maintenance, your fuel injectors will last for a long time.

KPS Princeton Garage
3860 NJ-27
Princeton, NJ 08540
732-297-9515

Battery Replacement at KPS Princeton Garage in Princeton

Hello, welcome to KPS Princeton Garage. Today's focus is batteries. It seems like everything in Princeton runs on batteries. Of course, the batteries we're most concerned with here at KPS Princeton Garage are those in our customer's vehicles. Just like the batteries in our smoke detectors or TV remote, they wear out and need to be replaced . This can be thought of as the power output used to start a cold vehicle engine. The number of cold cranking amps you need depends on your vehicle and where you live in NJ, specifically how cold it is. (Many Princeton drivers have first-hand experience trying to start their car on a cold winter morning.) The two factors are that the colder your vehicle's engine is, the more power it takes to turn the engine over to get it started. It has all that cold, sluggish oil to contend with.

The other factor is that the chemical reaction in the battery that creates electrical energy is less efficient when the temperature dips. Let's say it's 80 degrees Fahrenheit (27 degrees C) in Princeton. At that temperature, 100% of the battery's power is available. At freezing, only 65% of battery power is available, but it requires 155% as much power to start the engine as it did at 80 degrees F (27 degrees C).

As you can see, the colder it gets, more power is needed, but the available power drops.

So if you live where it's cold in NJ, you need a battery with more cold cranking amps than you do where it's moderate or hot. The battery that originally came with your vehicle was based on averages. At KPS Princeton Garage, we like to remind Princeton drivers that they should always get at least as many cold cranking amps as their vehicle manufacturer recommends but may want to upgrade if they live where it gets real cold.

KPS Princeton Garage
3860 NJ-27
Princeton, NJ 08540
732-297-9515

The Importance of Princeton Drivers Following Service Intervals

Today in our KPS Princeton Garage blog, we're going to talk about following recommended service intervals. Your vehicle isn't the only aspect of your life in Princeton with recommended intervals: Let's start with twice yearly dental check-ups and regular physical exams. How about laundry, watering the lawn and paying the bills?

Now, what would happen if you didn't follow these intervals? Well, you'd get more cavities. You may not discover health conditions that could be more effectively treated with early detection. And you'd have to wear dirty clothes, be embarrassed by your brown lawn and have your utilities shut off.

Clearly, there are some things in life that we have to take care of regularly. If we don't, there are negative consequences. Our quality of life in Princeton takes a hit and it inevitably costs more money.

So why is it so hard to remember to follow regular preventive maintenance on our vehicles? Probably a couple of reasons. One is that automotive maintenance items just don't seem that urgent. All our Princeton neighbors can see our dead lawn, but no one knows how dirty our transmission fluid is. It's easy to put off. The other reason is that we're just not as familiar with automotive maintenance, so it's a bit intimidating.

From a practical standpoint, people in Princeton don't need to memorize their vehicle owner's manuals. You can let your KPS Princeton Garage advisor remind you of the guidelines established by the vehicle manufacturer; he has checklists of what the manufacturer recommends and can find potential problems when he inspects your vehicle. You really can rely on KPS Princeton Garage professionals to help you make good automotive decisions.

For Princeton drivers who want to be more proactive with their vehicle care, here are some simple ways for you to remember what has a maintenance interval.

First: Fluids. If it's liquid, it's got a replacement schedule. Oil, transmission fluid, coolant, power steering fluid, brake fluid, differential fluid, etc.

Then think tires. They need air, rotation, balancing and alignment. And while you're thinking tires, don't forget brakes and shock absorbers.

And what makes your vehicle go? Air and fuel. Air filter replacement, fuel filters and fuel system cleaning. Of course there are more items, but if Princeton car owners remember to take their vehicle in to KPS Princeton Garage for these things, their service advisor will help them with the rest.

And if you don't follow recommended service intervals? You get lousy fuel economy, your vehicle doesn't run as well, your safety is compromised and you'll spend more money in the long run. So it's the same as everything else: The quality of your motoring life takes a hit and it ends up costing you more.

Reason enough for me to follow recommended service intervals.

KPS Princeton Garage
3860 NJ-27
Princeton, NJ 08540
732-297-9515

KPS Princeton Garage Brake Service for Safe Stopping in Princeton

Let's talk about something critical for all Princeton drivers: your brakes. Your vehicle is heavy, and it takes a lot of muscle to bring it and your passengers to a safe stop – so everything needs to be in good working order.

Here's an explanation on how your disc brakes work:

The wheel hub keeps your wheel attached to your vehicle. The brake disc – or rotor – is attached to the hub and rotates with the wheel as you drive around Princeton. Your brake pads clamp onto the rotor to slow the wheel.

The brake caliper straddles the rotor and squeezes the rotor to slow it down. The calipers contain brake pads which press on the rotor when you put your foot on the brake. The brake piston causes the calipers to squeeze and release as you use your vehicle brakes.

Your brake pads start to wear the first time you step on the brakes. Eventually the pads wear out and need to be replaced. If you don't replace the pads when they're worn out, the metal parts of the brake will grind against the rotor and carve grooves into the surface. We've all heard grinding brakes and it's not a pretty sound.

If a rotor isn't scored significantly, your friendly and knowledgeable KPS Princeton Garage technician can put it on a lathe and smooth it out. If the grooves are too deep or if the rotor is warped or cracked, you need to replace it.

Sometimes brake pistons can stick and must be replaced. Typically it's cheaper to replace the entire caliper at KPS Princeton Garage in Princeton than to rebuild the piston.

So there you have it – an important lesson on how your disc brakes work. If you replace brake pads on time, it will not only keep your vehicle stopping safely but could save you cash on unnecessary repairs down the road.

KPS Princeton Garage
3860 NJ-27
Princeton, NJ 08540
732-297-9515

See the Light (Automatic High Beam Dimmers)

It's happened to all of us.  We're driving down a highway at night and over a crest appears a car with its high beams blazing.  You are momentarily blinded, hoping the other driver will switch them to their low beam setting and restore your vision.

Not only do we not appreciate being blinded, face it; we don’t want to be that other driver, either.  You know, the one who forgets to turn down their high beams.

Why do we want high beams in the first place? They can improve safety when used correctly, giving drivers more reaction time since they can see farther down the road.  But research has found many drivers either don't use them or, when they do, they frequently forget to switch to low beams.  Enter the automatic high-beam dimmer.

The quest for the perfect one began back in the 1950s, General Motors invented something it called the "Autronic Eye." It was a phototube which sat on the dashboard and turned down your beams when it saw other headlights.  While touted as being the biggest advance in night driving safety in 30 years, it didn't work all that well.  But as technology got more advanced, systems improved.

Today's automatic high beam dimmers usually have a camera in the rear view mirror (pointing forward).  When the camera sees lights, software in the system's computer attempts to determine the source of the light, whether it is an oncoming vehicle, taillights, ambient city lights, street lights or the reflection off of a street sign.  It then adjusts the headlights to operate high beams if appropriate or a less-blinding mode if they’re not.

Some automakers are striving to make their headlight systems smarter and safer by developing lamps that can avoid blinding oncoming drivers by means other than simply dimming them. One idea? Splitting the beams so they will block just the portion that shines into the eyes of oncoming drivers.

It's a long way from the Autronic Eye. 

KPS Princeton Garage
3860 NJ-27
Princeton, NJ 08540
732-297-9515