Here are some of the most common engine problems that may result in needing to pick up an engine rebuild kit:

- If you are hearing loud knocking sounds coming from the engine: Any type of noise that your engine makes that does not sound like standard running procedure is not a good sign. Your engine should never make loud noises while it is running. In some cases, noises can be caused by other malfunctioning parts. It is important that you have your car looked at as soon as you notice any unusual noises. Otherwise, you risk making the problem much worse. Problems with cars do not heal or get better over time – they only get wore. And they get more expensive the longer you wait to fix them.  Something that you could be fixed for relatively cheap today can turn into a problem that will cost you an arm and a leg tomorrow.

- If you notice large amounts of thick white, blue, or black smoke coming out of the tailpipe: Every car lets off fumes from the end of the tailpipe, so seeing what looks like smoke is not always a bad thing. In some cases, the smoke is actually exhaust fumes or condensation burning off, so there may be nothing to worried about. But in situations where the smoke is excessively thick and continues for an extended time, there is most likely a real problem. There is something going wrong with the engine which is causing that smoke to come out of the tailpipe like that, and you need to find out what that is and have it fixed immediately if you want to keep your vehicle running properly.

- If the engine is burning oil quicker than usual: Oil is what lubricates the various inner workings of an engine, and when your engine burns through oil at a faster rate than normal, it can be the sign of a very serious problem.

- If your engine uses up fuel faster than normal: One of the telltale signs that you have a faulty engine is that it is burning fuel too fast. This can mean that your engine is requiring more fuel to properly run that it should. It can also mean that there is something off in the computer or fuel injection system that is telling your engine it is not getting enough fuel when, in reality, it is. Regardless of the reason, if you notice that your gas is not getting you as far as it should, you might want to start looking into an engine rebuild kit.

It is important to keep in mind that engine rebuild kits will not get your engine back into a new state. The only way that you can have a new engine in your car is to buy a new one. But because new engines are usually very expensive, they are most likely not going to be your best choice if you are on a budget. Engine rebuild kits will allow you to recondition your engine so that it runs smoothly again. Because you are simply fixing the engine you currently have, these are considered the cheapest option.

Here is a quick overview of the various options you have when your engine starts malfunctioning:

- Purchase a new engine: As stated above, this is a very expensive option. In many cases, new engines can cost just as much as the car itself. In these situations, it probably would not make sense to spend that much money. Because of this, many people just go ahead and buy a new car entirely, rather than spend several thousand dollars on a new engine. That being said, new engines do come with excellent warranties.

- Purchase a re-manufactured engine: Re-manufactured engines are engines that were faulty at one point but have been sent back to the manufacturer to be fixed up and restored. They are not as expensive as new engines, but they are not the cheapest option. Almost all re-manufactured engines come with a warranty, but it is obviously not as good as the warranty you will get when you purchase a new engine.

- Purchase a used engine: Much cheaper than new or re-manufactured engines, used engines are what most people purchase when their existing engine breaks down. While they are considerably cheaper than the options listed above, most of them do not come with a warranty.

- Purchase an engine rebuild kit: Engine rebuild kits are the cheapest option on the table when it comes to getting your engine fixed. While they will not work in some severe cases of engine malfunction, in a lot of situations, they are the ideal option when it comes to engine repair. Fixing the engine that you currently have is going to save you much more money than if you were to spend the kind of money that is required to replace the engine altogether.

You can look at engine rebuild kits online in order to find the best deal for you. Before you make any final decisions, be sure that you have done enough research and that you understand exactly what type your car will need. Also, be sure that you will be able to fix your engine before you start the process. There is no point in checking out engine rebuild kits if your engine is so damaged that it can not be fixed at all.