J & M Diesel - Seattle Area Diesel Truck & Marine Services

Joe Dupree 

on Google

2 months ago

J&M Diesel is a great place to bring your diesel honest, far and in my opinion they truly care unlike other shops that wiil drain your pocket for nothing while these guys went through my 6.0 and it came back a new truck for a fraction of the price as the last place I went to witch charged me 1500 for a lift pump I put in my self so honest friendly and some excellent mechanics Thanks agian Joe Dupree you'll have my business and all my friends 

Matthew H 

on Google

4 months ago

My injectors were going out on my F350 6.7 so Mike and the team got my truck running like new. They even fixed my steering. They know what they are doing with Fords and lifted trucks. Only 2 stars because I only needed 7 of my 8 injectors replaced. Mike knew I just had Ford take 3 weeks diagnosing and fixing cylinder 1 and replacing cylinder 4. I spent around $2k and 3 weeks with my truck at Ford for that. When I picked up my truck Mike told me they tossed that genuine Ford injector that's was weeks old and they charged me f... read more

Chip Bayley 

on Google

8 months ago

I took my ‘04 F-250 diesel to J & M. I could not be more satisfied with the work. Mike and his team fully restored my aging diesel and completely fixed my sloppy steering issue. Mike was fully up front with the estimate and did outstanding work. My truck runs like new!! I would gladly return to them for any necessary service! I’ve tried a lot but J & M are definitely the best! Update - 3/13/2025 - my truck recently began suffering no starts. I replaced the FICM and relay, but no improvement. I took it back to Mike and they d... read more

Nicholas Upton 

on Google

9 months ago

I had my f350 towed in because it wouldn't start. Mike had it fixed in two days for less than expected. The whole crew was pleasant to work with. Good honest diesel mechanic. Thank you 

Tim Whitmarsh 

on Google

10 months ago

The crew at J & M took my 2000 F350 7.3 and got the front end back to it's original state, it goes down the road like new! They also fixed a bunch of little issues I had neglected for years, and I couldn't be more pleased. These guys know the business, with 250,000 miles on my truck I am glad to have them available to keep me on the road.