Started having issues with a 2004.5 Cummins motor. Grayish smoke on initial start-up, then lugging/sputtering at low rpms but fine above 1500+. Did a bunch of searching for a reputable diesel shop. Found it. Stopped in, explained my issues, Mike was attentive and had a pretty good idea what it was. Set up an appointment for diagnostic check. Dropped the truck off the night before. Next morning Mike calls with 45 minutes of opening with the results and an estimate. He allowed me to keep the truck their while injectors were ordered and set an install date roughly 1½ weeks out. Truck was done as scheduled, estimate was spot on, and the truck runs like it did when new. Thank you.

Mike was super straight forward- did a great job- had awesome communication- overall a great experience - thanks so much for taking great care of my truck.

My neighbor used the words honest and integrity after his truck came back from Mike. As soon as we talked a few minutes when I stopped in, I knew exactly what James meant by honest and integrity. Monster Diesel did a great job on my front end and was open from the estimate to the final cost. Monster is definitely a 5 star in my opinion.

I searched for years to find a good diesel mechanic. I thank the Lord for sending Monster Diesel Repair to Gilbert. Quality service from soup to nuts!!! My ‘04 Superduty is still going strong. Thank you Mike and your team.

Mike replaced my 2003 6.0 injectors, FICM, harness, etc. It was worth every penny. I have towed several pieces of heavy equipment and horse trailer loaded, in my move to the mountains of Young AZ. My truck runs like brand new. I have taken my truck to Mike since it was new. Best Diesel mechanic period. You may wait for appt, but he gets it done when he says.

Mike was awesome! Had some air flow issues with my 2017 F-350 and he went above and beyond to get it handled. I will definitely be back for any of my service needs!

I took my 2000 F250 to have a turbo problem checked out, They gave me several options for the fix. Cheaper to not so cheap. I went with their recommendation and put a new turbo on. It was fixed and ready when they said it would be and at the price they said. They answered all my questions and concerns. They will definitely have a return customer and will recommend them to friends.

I took my 99 F350 in for leaky injector cups. They gave me a start date and a finish date. Even with a fair amount of other problems. They got it done when they said. They went the extra mile of fixing a bad fuel pump to get the injector pressure up to spec. My truck runs nearly like new, even with 400,000 plus miles. Forget the dealer, this is the place!