Diesel Repair

In addition to our general auto repair services, we have mechanics specially trained in diesel maintenance and repair.

$25 OFF REPAIRS

$25 off repairs totaling $150 or more in labor expenses. One coupon per visit. Not valid with other offer or special. Coupon must be presented in advance.

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Diesel engines have some powerful benefits and can be a great asset to a vehicle. However, because diesel engines are significantly different from regular gasoline engines, you will want to make sure to use a specialized diesel mechanic to service and repair your diesel engine. Whether you are looking to service a larger truck, a pickup, a fleet vehicle, or even a passenger vehicle or other machinery, Clegg Auto has the diesel expertise to help meet your needs. Here are the basics of what you need to know about diesel maintenance and repair and how our diesel mechanics at Clegg Auto can help you keep your diesel engine running in top condition.

Some of the most common diesel problems and repairs include:

Oxidized oil
Humidity Reactions
Hard Starting
Lack of Power
Replacing defective glow plugs
Engine knocking
Wrong weight viscosity
Faulty Lead/Acid Storage batteries
Overly noisy engines
Discolored smoke from the exhaust.

Most diesel engine problems can also be commonly diagnosed through the color of smoke from the exhaust. Black smoke often indicates an incorrect fuel to air ratio and can be caused by many things such as faulty injectors, injector pumps, bad air filters, a broken EGR valve, or even a turbocharger issue. Blue smoke means that the engine is burning motor oil, usually caused by a leak in the engine. This can sometimes be a turbocharger issue or a problem with valves or an oil filter. Lastly, white smoke indicates that fuel isn’t being burned property within the engine either due to too much fuel being injected or not enough heat or compression.

Customer Reviews

Google Rating

4.8

Based on 1299 reviews

Clegg Auto Spanish Fork

4.8

Johan Stoop

15:16 20 Oct 22

Mark and the team are great to work with. I took my son’s 2001 truck in for inspection to see what can be done to save it. They took the time to walk me through and explain in detail the inspection process and results and then the same with repairs. Did not need to scrap the truck and at a very fair price my son now have a perfectly running truck again! Will for sure return with any future repair and service work for my vehicles.

Tyler Gill

22:39 14 Oct 22

From start to finish Clegg Auto Repair was fantastic! I took my car in for an alignment and to have my front tires replaced. They did a great job! They were honest, easy to work with and my car runs smoother than it ever has. A big thanks to Clegg I will definitely be back again.

Karlee Kaighn

15:20 14 Sep 22

Clegg is the best! Their tow truck driver was clean and quick, and drove all the way up to Salt Lake to pick up our vehicle after the brakes went out. Then, once it was at the shop, they did a thorough evaluation and found the problem. They even had a second technician double check everything before moving forward with work. They did an amazing job at communicating the progress of my vehicle with me and they were open and honest about everything. I will be using them again and again!

Weston Clark

15:04 03 Sep 22

They did a great job! The were fast ,efficient , thorough and friendly. My truck drives so much better thank you so much I will definitely bring my truck back here for repairs

Conner Richardson

15:05 02 Sep 22

Great customer service here! Took a car I was looking at buying in to get it checked over, they had it in and out in 15 minutes! They were super friendly and helpful in giving me the correct information and help I needed!

B Binkerd

12:09 17 Aug 22

My initial contact with Clegg Auto was for an oil change for my car. I made an appointment for the same day I called and took the car in. The service was great, the staff I interacted with were all very friendly and what really impressed my wife was the waiting area. She's the one who usually takes the cars for service and waits for them to be finished. She was so excited about the seating and overall cleanliness of the waiting area. I found the price reasonable for the service and the oil change was completed (along with a general inspection of the car) in a very short time. I'll definitely be coming back here for more service on the cars.read more

Rex McRee

02:16 01 Aug 22

Clegg Auto has fantastic leadership and impeccable workmanship. This outstanding leadership permeates the whole team. The leader is friendly, personable, empathetic and honest. Tim is an outstanding leadership example and he has lead his complete team to the same end and with that he has built a business the community of Spanish Fork can be very proud to have in their neighborhood. These folks have no idea who we are, they knew we arrived from out of town and still treated us like family or more likely just how they would like to be treated when in a similar situation. The result is quick honest thorough diagnostic and repair of a vehicle on a cross country trip. If I lived in the area this is the shop I would use for all of my vehicle maintenance and repair. Thank you for the outstanding service - Rex and Kelsiread more

joe wayman

01:16 07 Jul 22

Super nice honest people. Communication was great. My A/C is better then new. Great price.I will definitely recommend them to anyone I know who needs automobile repairs

Voyage Direct Primary Care

14:59 01 Jul 22

Clegg Auto is “next-level” car care. I took my truck in and they were able to get it diagnosed that day and treated with the next couple of days. They kept me updated every step of the way and reached out with updates. Very efficient and very good care!

Shay Hansen

19:03 27 Jun 22

From beginning to end of process by far the best! Communication was amazing! They kept me in loop to know what the status was of repairs. Fair pricing!! Will recommend to all was amazing experience. Thank you!!!!

Anna Palmer

01:17 31 Mar 22

Love this place! It was my first time going there and i’ll never go anywhere else! it genuinely felt like they cared and wanted to help me and my car runs better than ever! they kept me updated on what they were fixing and they have great prices! 10/10 recommend!

Aylín López Villalobos

16:21 22 Feb 22

They were really great! We trust them to do our car maintenance because a few years back our dealer said we needed new break pads so we took it to cleggs and they checked it out and they told us we didn’t need them replaced! Super honest people and I love that. I dropped the car off and they were able to give me a ride home and were amazing at communicating. Definitely will keep taking my vehicles here

Kelsey Carpenter

16:58 09 Feb 22

Went in to get my brake pads replaced and I’m a few minutes they called me and told me that my brake pads looked great that they just needed fluid. I appreciate their honesty and for not trying to rip me off like other places have done. I would highly recommend

Aaron Chournos

16:36 09 Feb 22

Brought in my Subaru, which was purchased at auto source a few years ago, with a variety of issues. WARNING out there to those who may be looking at purchasing a vehicle from auto source with a wrecked title.I asked the team at Clegg Auto auto to find the problems that were causing all kinds of noise and vibrations on the front end of the car. They communicated and every step with photos and explanations. In the end, they returned my Subaru to me running better than it has in a couple of years. More quiet, more powerful, and no more vibrations.Of course, they didn’t do it for free. Their clear and proactive communication was excellent. They also found a $100 solution for an $800 repair. I salute the team at Clegg. For recommendations.read more

Tervarous Ellis

03:23 23 Nov 21

A&E Trucking was treated like royalty from the beginning to the end. Outstanding customer service and excellent communication. I want tobsend a personal thank you to Tim and Mike and everyone of there techs. They went above and beyond to get me back up and running. So thank you from the me personally and the the entire A&E Trucking family much love.

Avery Bishop

23:45 20 Sep 21

LOVE this business! they fixed my car so fast and were super helpful, accommodating, and did everything they could to make sure customers got the fixes they needed. Sam fixed my car and it was clear he knew exactly what he was doing and was so happy to help and kind. love their business and they do great work. Would absolutely recommend to anyone needing body work done on their car. Thank you clegg auto!!!

Todd Milne

16:31 17 Sep 21

These guy are AMAZING!!I had my truck at a different shop and really felt like I was getting the run around. I was told the repairs on my truck would be $6800 to $11000. When Clegg Auto got my truck they looked at it and called me to talk about what they had found. Turns out the shop that had it earlier had put too much oil in the truck casing it to leak. Clegg Auto changed my oil and told me to come back in a week or two if it was still leaking oil. My problem was solved with a simple diagnostic, phone call and an oil change (which I still need to pay for. They told me to see what happens and then come back….who does that these days?!).I value honesty above all else. These guys are as honest as they come. They very easily could have done the more expensive repairs and I would have been none the wiser. THANK YOU FOR YOUR HONESTY AND INTEGRITY!!!!I recommend them to anyone looking for a great auto repair shop!read more

Paul Ashby

15:16 02 Sep 21

My 1996 Toyota Avalon, which has 300K+ miles on it has been running a little hot, and the driver side Windows regulator and motor quit working so I had a window that was down all the time. They gave their initial estimate to fix the window but they were aware of my financial situation so they worked with me and helped me find ways to locate a regulator and motor and then worked a plan for me that saved me a lot of money. They were willing to let my car stay on their lot until the issues were fixed, which was a huge help! Dave, who worked on my car kept me posted via text almost every day, which was extremely helpful. Laramie and Tim were also great to work with in helping me find options that could help me keep my old car from heading to the car graveyard just yet. My car is running great now and my pocket book wasn’t beat up in the process! Clegg Auto is amazing and I will always recommend my friends, family, and anyone who needs car repairs to go to them. They are a class act!!read more

Linda Baldwin

19:58 13 Aug 21

We had our fuel filter module go out. Clegg Auto diagnosed it and got it repaired very quickly and economical. Very pleased with their care. We are from out of town was in Spanish Fork for a wedding celebration. Very nerve racking when you have no idea what’s going on with your vehicle or who the mechanic is working on it. These people were great, professional, up front with costs and quick to squeeze us in with their scheduled repairs. Would recommend them. And a big thanks for taking care of us.read more

Raquel Laking

15:08 12 Aug 21

Quick, easy, efficient service. We like Clegg and their prices and how honest they are when it comes to repairs needed and the best way to go about them. The mechanics were very nice and let us know of any issues and did not try to pressure us into getting anything extra. They have a nice waiting room as well.

Shalyn Adams

16:18 28 Jul 21

I have gone here sence I started driving and I will keep going. They are always very helpful honest and friendly. They go over what they are doing so your not left in the dark. I loved Steve sad to see him go but the new manager is just as good. Always appreciate the team there.

Spencer Flint

15:13 21 Jul 21

Very happy with Clegg. I love that I don’t need to worry that I’m being overcharged. If they run into any trouble while working on my car they call and keep me updated before continuing. Definitely going to continue using them for my car service.

Phill Crawford

16:59 12 Jul 21

Clegg’s was amazing. I walked in, they were slammed and said they would work me in the next couple of days. They called that afternoon and told me what was happening and what needed to be done. Laramie gave me all the options and what she recommended and asked what I wanted to do, she gave no pressure one way or the other. Very good experience, I don’t like to pay for a mechanic because I’m pretty handy but rest assured I will be back for any future repairs.

Travis Raff

15:21 10 Jun 21

My car’s AC didn’t work, so I took it in and they said the condenser had a hole in it. They replaced the condenser and charged it, and now it cools like a fridge! They also did some work on the sway bar and I’ve noticed my handling around corners is better now. Everyone was friendly, and it didn’t cost me an arm and a leg. I also received timely shuttle rides to and from the shop. Clegg knows what they’re doing!

Chris Bosselman

15:36 24 May 21

We developed brake trouble on our way from Wyoming to Utah. We had a commitment later that day that we could not miss. They were able to perform the brake replacement and accommodate the needs of our adaptive vehicle in a very gracious manner. It was obvious that they went out of their way to accommodate both our schedule and our unique vehicle needs. Excellent service and very courteous staff! I would recommend them to anyone.

Jessica Grace Crandall

18:02 31 Mar 21

I come here for my car maintenance on my Hyundai, and I know that I'm always getting a good value. I drive a lot of miles on my car and they are always so good to bring up concerns but speak to me honestly about what it takes to do maintenance repairs. One time I noticed my car was leaking antifreeze fluid, so I took it into the shop and they came back out a quick 5 mins later and said "no charge!" What? really? Yes, it was just the gasket head needed to be adjusted. As a non-car person non-handy person there would have been no way for me to know even if they had decided to charge me $200, so I appreciate their honesty.read more

Hal W

16:27 05 Feb 21

Clegg was recommended by my tow driver. I am very happy with the professional services provided. There was close contact & reasonable planning for the repairs. I didn't ask for prioritizing repairs but they seemed to know exactly what I was thinking and answered it right away. My vehicle started and drove without any problems and I am grateful that Clegg Auto is where my van was taken. I am looking forward to Clegg Auto providing the automotive and service repairs and maintenance for my vehicle. Yes it is a drive to get there but I know it will be done right. The employees were extremely friendly. It was almost like I was having my van worked on by friends.read more

Jared Burton

19:09 31 Jan 21

I had a great experience here. The customer service was awesome. They were welcoming and listened to me. This is what people want in a mechanic shop! Plus they worked hard and quickly and stayed on quote. Thanks for being good.

George Bayles

15:06 08 Oct 20

They were courteous, patient, and friendly. The girls in the office were especially so. Clint couldn’t have been more accommodating. It was a refreshing experience.

Ryan Spaulding

15:04 19 Sep 20

Very impressed with these guys. Excellent service. Best communication I have EVER seen from an auto shop, and final bill came in lower than anticipated. Will be back in the future!

Mary Ann Miller

17:04 03 Sep 20

Service was great! Laramie was very friendly and went out of her way to make me feel like a valued customer. I will go back.

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DIESEL REPAIR

$25 OFF REPAIRS

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Customer Reviews

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Auto Body and Collision (Spanish Fork)