Working Hours
  • Mon 8:00AM - 5:00PM
    Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
    Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
    Sat Closed
  • Sun Closed
settings

ENGINE WORK

Ensuring your engine is up to par is an important component of a well-maintained vehicle. But you shouldn't trust your engine repair needs to just anyone! Jeffrey Auto Repair Service offers affordable engine repair services that are hassle-free and reliable every time. Contact us at 641-423-1310 or send us an email for more details!

Our internal engine services include:

Diesel
Although diesel engines don't require tune-ups and tend to last longer than gasoline engines, they do require regular maintenance. Typical maintenance tasks include:

  • Changing the oil & filter
  • Changing the air filter
  • Changing the fuel filter
  • Bleeding the fuel system
  • Draining the water separators
  • Refilling the urea injection system
You can count on the experts at Jeffrey Auto Repair Service to help your diesel engine last a long time.

Belts & Hoses
Timing belts and serpentine belts are the most common types of belts in trucks.

A timing belt (also referred to as the camshaft drive belt or the Gilmer belt) is a notched belt that allows the crankshaft to turn the camshaft. Failure of the timing belt would lead to failure of the engine. A loose timing belt could lead to its slipping. When slipped, valves will open at the wrong time putting them at the risk of being struck by the pistons. To avoid this, have your timing belts inspected and serviced regularly.

A drive belt transfers power from the engine to the front mounted accessories such as the cooling fan, power steering pump, air injection pump, the air conditioning compressor and more. Failure of the drive belt means that all the engine accessories it's powering will stop working leading to overheating of the engine. To prevent this from happening, have the belt regularly checked for wear, cracks and stripping.

Hoses (or coolant hoses) are the heater and radiator hoses (upper and lower). The hoses facilitate the flow of coolant between the radiator, engine, and heating block. Old and worn out hoses can easily burst resulting in an overheated engine. To prevent this from happening, have the hoses inspected for cracks.

For belts and hoses maintenance and replacement services, visit Jeffrey Auto Repair Service in Mason City, IA 50401-5632 today. Remember, working belts and hoses will lead to a properly working engine.

Cooling System
Although a truck's engine operates most efficiently at high temperatures, the surplus heat produced during combustion can damage engine parts. To keep the engine safe from the surplus heat, trucks come with a cooling system. The system helps the engine maintain the required temperature and release any surplus heat to the environment.

The cooling system is made up of various parts that work harmoniously. These parts are the radiator, fan, pump, pressure cap, hoses, thermostat, and overflow tank. Failure of any of the parts will result in a poorly functioning cooling system.

To have a properly working cooling system (and thus a healthy engine), consider having periodic servicing of the parts that make up the system. At Jeffrey Auto Repair Service, we can service or replace (if necessary) radiators, fans, water pumps, hoses, thermostats and pressure caps.

Exhaust
An exhaust system is a piping that directs exhaust gases away from the internal combustion engine to the outdoors. A truck's exhaust system is made up of one or more exhaust pipes. An exhaust system can be modified to increase engine power (and performance), reduce pollution, or reduce noise. Also, a properly operating exhaust system is required for operator safety.

To get the most from your truck, you need regular exhaust service. For exhaust repairs, exhaust modification, or exhaust replacement, call 641-423-1310 or visit Jeffrey Auto Repair Service today.

Water Pumps
A water pump is a vital part of your truck cooling system. A water pump is a centrifugal pump that circulates fluid whenever the engine is running. A belt connected to the engine's crankshaft drives the pump. Water pumps have vanes that fling the fluid to the outside of the pump (using centrifugal force) where it can enter the internal combustion engine. After going through the engine and the cylinder head, the fluid flows back to the water pump.

If the water pump develops a leak or the hub becomes loose and noisy, you need to have it replaced. Faulty water pumps will lead to poor cooling of the internal combustion engine. To have faulty water pumps repaired or replaced, call 641-423-1310 or visit Jeffrey Auto Repair Service today.

Engine
This is where your truck's combustion of fuel occurs. The ignition, which takes place in a combustion chamber, provides force to the pistons, turbine blades, or a nozzle. The engine provides power that drives your truck. With a poorly operating engine, you will have a poor performing truck. Visit Jeffrey Auto Repair Service in Mason City, IA 50401-5632 today, to have all your engine needs addressed. At Jeffrey Auto Repair Service, we have engine specialists who will make sure you get the most from your truck's engine.


What Our Customers Are Saying

Excellent service, professional and friendly staff. Knowledgeable techs and gear guys. Respectful and thorough. Thanks for getting our vehicle back on track!


-Kip & Joan

The staff at Jeffrey Auto Repair were very professional and explained what repairs my auto needed. I would recommend them to anyone. The building and grounds are very clean and neat. They know how to treat their customers.


-Dolores K.

I would highly recommend you guys. You were courteous throughout the six weeks you had the vehicle. You made a ton of repairs including the transmission and radiator. But that is not all. I felt as though I had an honest advocate working for me that thought as much of my vehicle as I did. I continued to get options on things that SHOULD be done to keep it running good and things that WILL need fixing in the future. You did not suggest I do everything and that shows your honesty. I feel very confident in the repairs. You even tried a less expensive solution to fix the transmission. Thank you. In the end, I needed the transmission, though, and you had options for me. But all along the way you explained what was wrong and gave me options when there were some. You even went above and beyond and cleaned up the Suburban before I picked it up. I can honestly say no one else has repaired my cars since moving to Mason City 9 years ago. In fact you fixe! d my F-150 when the Ford dealer was unable to do so for 2 years! I have no need to find anyone else to work on my cars. Feel free to share this with any customer. You can even use me for a reference.


-Randal

It was great to have the charges actually be around $30 less than the estimate. Very pleased with all the work you have done for us on each vehicle we have owned over the years.


-Melvin A.

I called at the last minute and made changes to the work I wanted completed on the vehicle. Brian and his mechanics were very accommodating and completed the work before the time the vehicle was promised. I always feel completely comfortable leaving our vehicles for service because I am confident the work will be completed professionally and correctly. Jeffrey's services our vehicles like they are their own. Thank you.


-Linda M.

We've been going to Brian (Jeffrey Repair Service) since we moved into the area in 2012. We found him on accident, but have come to realize that we are extremely lucky in that!! Since then, we have had 5 different cars and he (and his staff) have been amazing on the work with each one of them!!


-Sara S. - Mason City, IA
  • Jasper
  • ASE Master Technician
  • BBB Accredited Business
  • Car Care Aware
  • Call Us For Service: 641-423-1310