I have known Juan for a while now always done work on our vehicles I came in the morning with my truck on a tow truck. I explained what had happened and he fixed the problem within minutes even the tow driver was surprised . I got on the freeway and headed to work . recommend 1000% read more

I limped my truck there because i was down the street and got a nasty vibration and noise. After keeping it overnight for diagnostic, I was told that my front passenger wheel bearing was bad. The noise was coming from underneath the cab, the wheel bearing was less than 2 years old (Moog), and the noise/vibration was nothing like a bad bearing. Furthermore, the tire did not wiggle at all when lifted off the ground. After taking it home, i did my own diagnostic and found the transfer case fluid burnt and full of metal shavings, the forward u-joint on the rear driveshaft was getting hung up, and the middle u-joint on the rear driveshaft had completely destroyed the needle bearings. Swapped out the transfer case and the 2 bad u-joints and both the vibration and noise went away. Take caution of what they diagnose for you. I'd been out easily $500 for the bearings and it would have not solved anything. read more

Juan and his crew at Diesel Master's are the best! Honest, reliable, overall great service. Only place I'll take my truck.

Juan does amazing job repairing my Ford F-450. Got my truck back on the road quickly. Great with communications, honest and to the point on repair needs. read more

Very professional and great service, lots of experience on FORD Diesel trucks . RECOMMENDED 100% read more

Juan is very honest and reasonable with prices. Definitely recommend for any repairs needed on diesel trucks.

Great place for your Ford 7.3! They are Ford specific and know exactly what they are doing. Shop is clean, they are honest, and get the job done right the first time. They had my truck back on the road and didn't break the bank! I would definitely recommend them over that diesel shop in Chino...just saying! read more

Juan! Diesel Masters! Thank you! I appreciate you guys going above and beyond to get my truck back into working order. It's a means to provide for my family. Between Fritts Ford and Hemborg collectively having my truck for over 2 months and not solving the issue at hand. Diesel Masters came in and resolved the issue within a day, communicated along the way, and schooled me on some things ha. Juan even hit me with a follow up call to check if everything is still everything. As long as I have my 6.7 the Diesel Masters of Corona will be my trusted shop. Thanks again. read more

This place was professional, kind, reasonable , reliable, and clean!!! I believe I have found my new repair place!!!! Just amazing.

After wasting my money at other local shops I found this place. The owner and his crew know exactly what they are doing, they know diesel trucks, my F250 had a weird electrical issue that left me stranded a few times and he fixed first time correctly. I went back again for an EGR cooler and oil cooler replacement and they did it for me for such a great price, he went the extra mile and even did some extra stuff for me on the job. Save yourself money and stress and go to Diesel Masters! read more

Amazing customer service! I took my diesel truck in and right away I was helped. Recommend this shop 100% for all your diesel truck needs! read more

Diesel Master's - Auto Repair Near Me - Riverside, California

See all

I happened to breakdown near and in the Riverside area. Looked up reviews and this place is golden. While I had the worst news about my truck engine... these guys were honest. Juan walked me through my options and frankly could have taken for a lot of money. Instead he was understanding, explained exactly what was going on with my engine and had a good conversation while I waited for a tow. This is the guy I'll come back to every time; to inspect before purchase or service my truck going forward. Thanks for all your attention Diesel Masters! read more

Great customer service. They fixed my 2019 F450 in a timely manner. Upper oil pan leak. Thanks guys. I'll be back

They were upfront, honest, thorough. I had a check engine light on for months. I had 2 other mechanics try and look into it. Diesel Masters had my truck back to me in a few days with the issue resolved by properly diagnosing the issue the first time. Very pleased with the service. They even contacted me a week later to make sure my truck was running good still read more

Great location, very professional and repairs done in a timely manner. I refer him and diesel masters to anyone.

Honest, knowledgeable and reliable. The best Powerstroke mechanics in Southern California. I have taken my 6.0 Powerstroke to Diesel Masters on two separate occasions. Both times I was impressed with their knowledge and passion for these trucks. What keeps me coming back is their exceptional customer service, quality of work and dedication to doing the job the right way the first time with quality parts. I am happy to have found these guys and will definitely be back! read more

Honest people with knowledge If I ever need anymore work on my powerstroke il take my truck to them

My F250 was going into wrench protection mode during towing. Diesel Master's found and fixed the issue.... Great service and communication! He knows what he's doing and this is the ONLY place I trust my truck to be worked on. Thank you so much! read more

I called for a diagnosis for white smoke coming from my 2006 F-350 6.0. I found their location very easy. I was immediately greeted and assisted with my truck. I felt very comfortable leaving my truck in the capable hands of Jaun. If you have any question or concerns these guys are the best. Don't be fooled by the other shops in town that rhyme with walls diesel. These guys will take care of you. My truck is running great and was a very quick turn around. Thank you Jaun! read more

Great diesel shop! Good people. Honest and reliable. I have a 2000 ford 7.3. Wont take my truck anywhere else. Highly recommend. read more

Well, once again, Diesel Master's has come to my rescue. I was out, pretty far from home with my truck and horse trailer loaded for a fun day. Well, later when it was time to go, engine idiled horribly, no go, and black smoke. I had someone follow me home in case we died...enough of that, we got home. Next morning Ima knocking on the door, and I apparently have a stuck open fuel injector suck gas like no tomorrow. Luckily I was under warrently for previous work done. They got me in and out in one day....Jaime and Juan are good guys, great mechanics and take care of their customers. I admire their work ethic and dedication to our vehicles and keeping us on the road! Thanks Guys! read more

Diesel Master's - Auto Repair Near Me - Riverside, California

Diesal Masters helped me with a bulletproofing kit on my F350 about a year and a half ago. The price was better than most shops that I got quoted and my truck has been running amazing ever since they touched it haven't had any issues I'm super happy with the quality of work and attention to detail five stars all the way! read more

Diesel Masters is the best. I've had the turbo removed and rebuilt, bullet proof ERG cooler, water pump and oil cooler installed. The install required that the AC system be evacuated and recharged. As a result of this work I had a refrigerant leak, they were prompt in getting the leak repaired at not additional charge. I will be taking it back in to have the heads bullet proofed and a bullet proof FICM intalled. Can't say enough about these guys. read more

Lleve mi troca Ford 350 Diesel y el muchacho Juan me atendió muy bien y me explicó lo que necesitaba la troca de mantenimiento. Me la regresó rápido y me salió muy bien el precio por lo que le hizo a la troca. Recomiendo ir a esta locación si tienen problemas con sus trocas ford Diésel. read more

I don't even know I have that many words to describe how awesome this place is. When I'm in town I don't go anywhere else for my Powerstroke repairs. Juan and the gang WILL take care of you and your truck and give it the attention it needs. Nothing but quality work here!!! read more

They rebuilt and bullet proofed my 2005 Ford Excursion and chipped it. Simply awesome. I only trust this treasure to them. They will not do anything that isn't needed, and they stand behind their work read more

A couple of weeks ago I took my truck into their facility due to an oil leak. I left the truck on a wednesday evening and received the call to pick it up friday afternoon. The customer service was really good and they were upfront about price and repairs needed. As of this review writing, the oil leak is still gone and I am extremely happy with their work. I will definitely be a return customer. read more

I couldn't be more pleased with the speed of service and quality of work from Juan. He answered the phone immediately. My F250 decided to not turn on. He told me to bring it in and within a day had it narrowed down to what the problem was. Juan called me every step of the way to ensure I understood what was being replaced and the cost associated. I will definitely be returning for future servicing on my truck. Two thumbs up Thanks Juan! read more

These guys know there stuff, rebuilt my 6.0 at my request and left it running like a champ. Been a few months since the job was complete and feels great. Thanks Juan , Jaime and helper read more

Diesel Master's - 6.0 engine out - Auto Repair Near Me - Riverside, California

See all

Let's just say the name Diesel Masters is not false advertising. I recently purchased an '02 F250 after my previous truck was wrecked by a hit and run driver on the freeway. My new F250 had a couple of problems that I knew about when I purchased it. I knew it had an oil leak, steering sloppy (notorious), etc etc and I figured it would be a simple fix. Well I couldn't work on it due to back/neck pain so I take it up to a shop that was recommended to us up in San Jacinto (About an hour drive one way) and the guy took a look at the truck. He stated I had multiple oil leaks coming from different areas of the truck (Some I even questioned because I didn't understand how it could happen. Now I'm not a mechanic, but I'm not an idiot and I usually work *cough cough break cough* my own stuff), and all different things were wrong with it. He originally quoted me $1500, then moved it to $2500, and he said it could potentially cost even more. I drove home, and was pondering it when *DING DING DING* I remembered there there was a Diesel Mechanic (Diesel Masters) a couple doors down in our business suites. I shoot on down there and talk to Jaime in which he told me he wants to fully inspect it. I brought my truck in the next day at 8:00 AM. He took my truck to the pressure washer, washed the bay to clear out all the oil then drove it back and inspected it. Once he did this, he inspected it. At 11:53 I received a text from him and he found the source of the leak. I went down there when I could break away for a couple minutes from work and he explained everything. There was 1 oil leak and I asked How much will it cost to fix it? *Drum Roll* Jaime said $10.00 I was in shock, how can he spend all that time inspecting the truck, drove it to the pressure washer, took time out of his day to do this and only charge me $10 for the part. I told him YES! Please replace it, he called his guy and same day the part was replaced. I couldn't believe he didn't want any money for the labor and I felt like I owed him, and couldn't let that go. Total cost: $10 for a replacement plug (I believe off the HPOP?) Couple bucks for the pressure washer Case of beer. Thank you so much Jaime, P.S This guy is so awesome, when my truck threw a code (simple sensor more than likely) I shot him a quick text with the code just to make sure it wasn't anything major. When I talked to him I immediately liked him, he seemed honest, responsible and overall a pretty good dude. Taking the time to drop my truck off at Diesel Masters was probably the best thing I could've done after buying it. You've definitely earned my future business and loyalty. read more

In a world where having full faith in a repair shop can be next to impossible, Diesel Masters proved to be 100% upfront and honest on work the deemed necessary and work that could be deferred. They were responsive, informative, and professional. Happy to say I have a diesel repair shop that I feel safe taking my truck to. read more

Can't say enough about Juan and Jaime. Being new to the area, I came to them since they were very close to where I live and also that they are Powerstroke specialists. I have been to them a few times now since my van is a 2002 7.3 Powerstroke and needed some maintenance. Also being a van, it is a little more difficult to work on in some cases. Every time I've taken it in, they resolve the issue each time and in a timely manner. Never once have I felt that they were dishonest with me with any of the fixes. I'm not a mechanic but I do know enough about engines to keep up in conversation with these guys. It is very difficult to find an honest mechanic alone but to find a good, honest DIESEL mechanic is almost rare. You will not be disappointed taking your Powerstroke to guys. read more

The only shop I let service my F450 Super Duty Work truck since I bought it is Diesel Masters. Juan and Jamie really know there Diesel's. Service is excellent. I recently had a braking emergency I needed it serviced ASAP I called Juan he said bring it in, they got me in and out in w/new pads up front and a new driver side caliper. Thanks to Diesels Masters I was able to make service on that load. Thx Guys read more

I took my truck into Diesel Master's because it needed a new fuel system. Juan took great care of the repairs and returned my truck to me in great working order. I will be taking my truck to Diesel Master's from now on for routine maintenance. read more

First let me tell you how I found out about DIESEL MASTERS. My '05 6.0 was broke down on the side of the road. Juan, one of the owners stopped to help me. He rigged up a quick fix to get me home, gave me a business card, and quoted me a very reasonable price for the repair. They say actions speak louder than words. Juan's actions, after a long day of work, told me this is the type of person I want to give my business to. Fast forward 5 years, and I have yet to be disappointed by DIESEL MASTERS. This is the only place I will ever take my truck. If anyone needs further evidence that DIESEL MASTERS is the right place for you, here's an incident that happened 12/17/20. Juan is about to leave on holiday vacation. I call to inquire about a repair. He says they are booked until he comes back from vacation. I tell him my story about my son wrecking our spare vehicle and that my 6.0 has an electrical problem. Juan did not want me stranded until he returned! He had me tow the truck into him so he could diagnose the problem. He gave me a quick tutorial on what needed to be done. A sensor!!! Easy fix for a somewhat capable home mechanic. DIESEL MASTERS are honest hard working guys that obviously care about their customers. Dave. read more

Got completely bamboozled by these guys for $800+. Took F450 in for cold start problems - ended up replacing ONE injector and not a factory injector for $800+ - absolutely no difference in truck. Took the truck 3.5 hours away to Holtville CA and got truck diagnosed, fixed (needed all 8 OEM injectors, module and sensor) and back on the road in 1 week. These guys are an absolute joke. read more

Great customer service with fare prices guys answered all my questions and had my excursion out in a timely manner highly recommended

For the past 2 months I have noticed that my 6.0 powerstroke has been progressively loosing more and more coolant I have 150k miles and have heard that is when they usually go. I found diesel masters through a friend and dropped my truck off within a day or two I get that dreaded call that my headgaskets are gone so immediately I must decide weather to get rid of the truck or fix it. I bought the truck brand new and it is always garaged I wasn't sure If I wanted put such a large investment into this old of a truck. I talked to Juan and he assured me that if I bulletproof the truck that it will be completely dependable and all the ford problems will be fixed. I told Juan to give me a little time to look around at trucks and do a little research before I go forward. The next day I called Juan and told him to go ahead and bulletproof the truck . I picked up my truck about a week later and it was ready to go. I picked it up and couldn't be happier with the work. I later found out Juan is a factory trained ford mechanic and diesel specialist with many years of experience working at the ford dealer. I do not worry about my truck I even have a tuner now that its bulletproofed before when it was stock I would of never considered putting a tuner on it to due to the poor reputation of the stock motor. If you have any year of ford diesel this is the place to go without a second thought. read more

I will only trust the repairs of my 2007 Diesel Ford F-250 to Jamie and Juan of Diesel Masters in Riverside CA. I currently live in Buckeye, Arizona and I schedule a trip to California ever couple of months, about 315 miles away to have Diesel Masters give my truck a maintenance check up. they're very thorough, giving me an account of what work has been done on my vehicle and suggestions on work that needs to be done either now or in the near future.. The one thing I've always liked about Diesel Masters is no pressure, and knowing I've come a long distance to have work done on my Truck they get right on it making it possible for me to get back on the road home. If you need a Ford Diesel Mechanic look no further than DIESEL MASTERS Riverside CA. Tell'm Fred sent ya read more