Engine Problems

  • Age of the engine
  • Poor compression, with loss of power the engine stops starting.
  • Cracking of engine block causes overheating, smoke is released from the exhaust, coolant leaks.
  • Damaged cylinders, piston and rings: rattling sound and blue smoke from the exhaust.
  • Worn out or broken rods cause tapping or tickling sounds, decreases oil pressure, the engine oil spots residue of metal shaving which rattles on acceleration.

Used engines are better.

  • New engines cost around $4,000 for a 4-cylinder, around $5,500 for a V6 and $7,000 for a V8.
  • Used tested engines with warranty will cost from $400 and will be as much as an 80% discount from new prices. The price of the used engine varies according to the age and miles covered.

How to test the used motor?

  • Note down the vehicle identification number (VIN) and the Engine number. Each engine is represented by a code, for example the variety of Toyota engine for sale including the four-cylinder and V6 engines, the naming system is patterned first with numeric characters, specifying the engine block model, followed by the engine family in two letters concluded by a suffix, a dash specifying the engine features.
  • Try to buy a complete assembled used engine.
  • Ask if the used engine has a long block or a short block.
  • Check the used engine in the morning with eight or nine hours at rest, all the hidden problems will show.
  • If a few puffs of white smoke come out while checking, that is OK. But if you see the used engine exhaust blue smoke and make loud noises that means the engine is burning oil.
  • If you hear a sound like two metals are colliding, don't buy the used engine.
  • Check the oil leakage. If the dipstick has a lot of black carbon, then there has been improper servicing.
  • Check for sludge in the oil. If there is sludge outside the used engine, there is a problem.
  • Open the used engine hood and if there is a smell of burnt oil, then again there is some problem.
  • Look out for overheating, unusual vibrations, spark plugs getting too hot.

Know the engine:

Used Engine

Purpose: Engine converts energy into torque.

Major Role: The engine requires energy which it gets from fuel. It converts the fuel into mechanical work or torque. This torque is applied to the wheels to make the car move. The engine has cylinders with pistons that move up and down. These pistons are powered by controlled explosions, igniting the fuel. This is called combustion.

Part description: Engines of vehicles are designed around sealed metal cylinders. Modern vehicles have four, six or eight cylinders. Some also have up to sixteen. Family cars a decade ago had a 2.0-litre petrol engine. Now turbo-charged engines are 1.0 liters. Engine size is expressed in liters. One liter measure 1,000cc (cubic centimeters). While bigger engines produce more power, smaller ones are equally powerful. Majority of the BMW cars on sale are powered by four-cylinders while Chrysler engine are V6. The power of the engine is measured in horsepower. This is an important specification and shows the engine performance. An engine with more horsepower and torque will accelerate quickly, while an engine with lesser horsepower will offer fuel economy instead of high-speed luxury drive. The mechanism of a cylinder is simple. It has pistons designed to move up and down and ignite the fuel with a spark for internal combustion and release the exhaust gases. Engine components are many and here is a list of some of the major components.

Engine block: A core engine part is made of aluminum or iron with several holes and contains cylinders, provides a path for water and oil flow to lubricate and cool the engine. The blocks, both big block and small block, has pistons, crankshaft, camshaft and depending on the vehicle.

Piston: Cylindrical apparatus with a flat top surface. It transfers energy that is created from burning to the crankshaft to move the vehicle. Pistons move up and down within the cylinder for each rotation of the crankshaft. Cast or forged from aluminum alloys, crosshead pistons are for large slow-speed diesel engines and slipper pistons which are smaller in size, for petrol engines. Pistons will move up and down 2500 times per minute on an engine that rotates at 1250RPM. Rings lie inside the piston that help compression and reduce fiction by rubbing on the cylinder.

The crankshaft: Placed on the lower section of the engine block, within the crankshaft journals (shaft area that rests on bearings), the up and down motion of the crankshaft support the motion of the piston corresponding with the engine speed. There are two different measurements you will need to know regarding the crankshaft. (see Used Crankshaft for more information)

Camshaft: In many modern vehicles, they are located on the cylinder heads called dual overhead Camshaft (DOHC)or Single Overhead Camshaft (SOCH). They are supported by lubrication immersed high longevity series of bearings. The camshaft regulates the opening and closing of the valve, takes rotatory motion from the crankshaft, shifts to up and down movement, and controls the progress of the lifter, pushrods, rockers and valves. (see Used Camshaft for more information)

Cylinder heads: These are attached to the engines through cylinder bolts and sealed with gasket heads. This component contains valve springs, valves, lifters, pushrods, rockers, and camshafts. They are key to controlling air flow in and out of the cylinders and fuel deployment. Cylinder heads are available in aluminum and iron casting. Port heads can be rectangular or cathedral. Lightweight titanium valves are the standard equipment and are used in high-speed engines. A broad range of cylinder heads is available with us. (see Used Cylinder heads for more information)

Timing Belt /Chain: They synchronize the movement of the camshaft and crankshafts ensuring that the engine runs efficiently. The timing belt is a toothed belt while the chain is a roller chain. There are several tooth profiles 3mm, 5mm, 8mm and 14mm. To determine the exact pitch and tooth profile measure the width and overall length of the timing belt. You can count the teeth and the cogs and multiply with the pitch to get the length you desire. Common materials used are neoprene and polyurethane.

Fast Shipping

Big Mouth Direct ships the used engines directly to your home, business, or mechanic within 24hours of your order. Send your preferred address to get the used engine for sale at no extra cost. Our headquarter is in Florida, your used motor parts are sourced from 4,000 salvage yards and warehouses. The engines we sell are 100% reliable. Whether you are repairing your vehicle or restoring a classic automobile, we save you the effort of looking through many sources. You can relax and rest assured when you purchase from Big Mouth Direct.

Quality Engines

Find 4-6-8-cylinder used engines for sale, along with fuel cell, electric and hybrid drive units with us. High quality used engines for luxury cars and affordable cheap engines, based on their efficiency in horsepower, torque, comparative specs, noise reduction, fuel efficiency and adapted to the new technology, all these used quality engines for sale are available with Big Mouth Direct.

BMW engines for sale from inline 6-cylinder engine in the BMW 328 (1936) to BMW M5 CS featuring 635 PS,750 Nm (553 lb-ft) and below a power-to-weight ratio of 3 kilograms per horsepower.

The Chrysler engines for sale from the first generation of "Firepower" Hemi engines to Supercharged Hemi V-8 Demon Engine, 440-cubic inch big block used in Dodge engines delivering 390 horsepower and 490 lb.-ft of torque.

The Flathead V8 Ford engines for sale to Eco-Boost turbocharged economic engine spotted in the modern Ford Mustang.

Honda engines for sale that cover anything from the 1983 CBR400 to modern VTEC systems.

Pontiac engines V8 set-upL-head engine to the 301 (100 mm) of 4 inches, 3 stokes.

The FB20D Subaru engines for sale includes the affordable EJ20T WRX STI. The engines display a power output range of 197 HP at 6,000 RPM, 217 HP at 6,400 RPM and can be identified from the coil on the plug.

Find Toyota engines for sale. The 2JZ-GTE is one of the most powerful engines on Toyota to 2ZZ-GE, the most common low fuel consumption petrol unit ranges from 169 to 240 horsepower and high compression ratio of 11.5: 1.


All-new, used and recycled OEM used engines are original equipment manufactured. They come with a 30-day warranty. Each used engine is tested thoroughly by our skilled technical team. Mention your vehicle model and we will get the specific engine for your car, SUV or truck. We are in the business since 1975 and guarantee customer satisfaction.

Benefits of used engines for sale The cost of used engines for sale

Buy cheap engines from Big Mouth Direct, your trusted used engine store online. They make used engines affordable at 80% less than the manufacturer's suggested list price.

Tested used engines.

Buying from us will ensure that you are buying a fully tested used engine that will last for years.

Get the exactly used engine for the exact model.

Some engines are no longer manufactured, and you cannot get them from the original manufacturer. Try Big Mouth Direct. Find used engines for sale, identically matched with your engine. Big Mouth Direct is the best place to buy used engines.

You will be fully aware of the used engine condition.

When you purchase a used engine for sale from Big Mouth Direct, you will be informed of the engine health. You will know the limitations before you purchase and work your vehicle accordingly.

You will buy a fully assembled used engine.

The assembled engine will have to be fitted in your vehicle as a unit.

The used engine for sale comes with a warranty.

Big Mouth Direct gives you a warranty on the used engine for sale. Test within the warranty period and get back to us if there are any troubles with your used engine. We stand behind our used engines.

Why choose Big Mouth Direct?

  • Big Mouth Direct is connected with 4,000 junkyards across the U.S.
  • Find the engine of any brand and check the website for the brand that you are searching for. Find BMW engines for sale, Chrysler engines, Dodge engines, Honda engines for sale, Ford engines for sale among many others.
  • We sell tested engines at a price you will not find anywhere else.
  • A team of technicians test the engines carefully.
  • The engine comes with a warranty.
  • We are in the business since 1975 and are a name you can trust.


Is it better to repair an engine or replace it with a used engine?

That depends on the condition of your engine. Complex engine repairs can be challenging and often lead to more complications. The cost can exceed your estimation. However, if the problem is basic, then repairing is a better idea. Engine troubleshooting begins on a lighter note and then turn massive. So, consult with your technician and fix your engine. If you do not have the budget for a company manufactured engine, then buying a used engine is a sensible idea. Used engines, if bought from a reliable source, will last for years without complaints. You can enjoy a smooth drive at less than half the price of the original engine.

What is a used engine?

Used engines are taken from another vehicle that may have been out of use for various reasons. Vehicles with relatively low mileage that might have suffered wreckage, are not roadworthy. Their engines are directly taken from the vehicle and tested thoroughly to check their increased usability.

What is a fully assembled used engine?

A fully built used engine includes forged pistons and connecting rods, the ductile iron cylinders that can sustain high pressure, the valvetrains that can easily bear surmounting engine speed, the hardware that has the right buildup to hold everything together with well-lubricated machinery.

What are OEM Engines?

OEM or Original Equipment Manufacturer engines are made by engine manufacturers and not third-party manufacturers. These are the exact replacement for the original engine. They have a one process engine software selection which makes the replacement of the engine hassle-free. They are supported with a warranty. However, they are much more expensive than used engines. Big Mouth Direct has access to the proper used OEM engine that the car manufacturer installed in the vehicle when it was manufactured. We can provide certified (original equipment manufacturer) OEM used engines at a much lesser price.

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