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Monday 7am - 3:30pm Tuesday 7am - 3:30pm Wednesday 7am - 3:30pm Thursday 7am - 3:30pm Friday 7am - 3:30pm

J & M Diesel Inc

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Lynnwood, WA
J & M Diesel Inc

Premier Lynnwood Diesel Service and Repair for Over 35 Years Marine Diesel Service and Repair, Fleet and Diesel Pickups.

Ford, Dodge, Chevy, Detroit Diesel, CAT, Cummins, Komatsu, John Deere, Perkins, Lugger. Oil Change, Brake Service, Brake Repair, Engine Rebuilds, Transmission Service, Complete Vehicle Maintenance

11/21/2025

Injector issues don’t hit all at once. They drop hints first.

• More smoke than usual
• Truck feels flat when you’re trying to get on I-5
• Rough idle
• Fuel mileage goes downhill
• Strong fuel smell
• Hard cold starts

Catching injector problems early saves a ton of money down the road. If your truck is doing any of this, stop in and we’ll take a look.

📍 JM Diesel
3418 121st St SW, Lynnwood, WA 98087
📞 (425) 745-6922

11/20/2025

Diesel Check Engine Light??

On a diesel, a check engine light usually means something real. It could be emissions issues, turbo concerns, injector balance, DEF problems, or fuel system wear.

The sooner you catch it, the cheaper it is to fix. Bring it by and we’ll scan it and talk through what’s going on.

📍 JM Diesel
3418 121st St SW, Lynnwood, WA 98087
📞 (425) 745-6922

11/14/2025

Glow Plugs vs Spark Plugs

Diesel engines don’t use spark plugs! Instead, they rely on glow plugs to heat the air inside the cylinders for cold starts. If your diesel struggles to start on chilly mornings, those plugs might be worn out. We can test and replace them fast.

Contact J & M Diesel at (425) 745-6922

11/11/2025

Today we pause to honor the brave men and women who served our country. Your sacrifice, discipline, and dedication inspire us every day here at J & M Diesel.

From all of us in Lynnwood, thank you for your service and commitment to keeping America moving, on and off the road.

J & M Diesel, Inc.
3418 121st St SW, Lynnwood, WA 98087
(425) 745-6922

11/07/2025

Here’s a quick one for all the diesel folks out there. A dirty air filter can kill your fuel economy and slow down your turbo. We recommend swapping it every 15 thousand miles, or sooner if you’re driving dusty routes. JM Diesel keeps OEM-grade filters in stock and can get you in and out quick.
📞 (425) 745-6922 | 📍 3418 121st St SW Lynnwood WA 98087

11/04/2025

November’s here and that means cold mornings, wet roads, and trucks that need a little extra care. JM Diesel is offering full winter checkups: battery testing, coolant flushes, fuel filters, and hose inspections. Don’t wait until it’s freezing out to find a problem. Give us a call and get your truck ready for winter in Western Washington.
📞 (425) 745-6922 | 📍 3418 121st St SW Lynnwood WA 98087

10/31/2025

Winter Reliability Package

Winter doesn’t care how new your truck is — be ready.
JM Diesel’s Cold Weather Reliability Package includes:

Battery + charging system test

Fuel filter replacement

Winter-weight synthetic oil

Coolant + pressure test

Block heater check

Keep your diesel dependable, powerful, and ready for work all season.

📍 JM Diesel – 3418 121st St SW, Lynnwood, WA
📞 (425) 745-6922
🌐 jmdiesel.com

10/27/2025

Turbo Warm-Up Tips

Don’t hammer your turbo cold.
Cold oil means dry bearings — one hard rev and you’re shortening your turbo’s life.

Let your diesel idle 30–60 seconds on start-up and let EGTs drop before shutdown. JM Diesel can clean and service your VGT turbo so it spools smooth and holds boost all winter long.

📍 JM Diesel – 3418 121st St SW, Lynnwood, WA
📞 (425) 745-6922
🌐 jmdiesel.com

10/24/2025

Check Your Coolant & Degas Bottle

Cold weather + weak coolant = broken parts.
When temps drop, old or diluted coolant can freeze and crack your degas bottle, radiator, or even the block.

JM Diesel pressure-tests your cooling system and replaces worn hoses, bottles, and thermostats before they fail. Don’t wait for leaks — get ahead of winter damage.

📍 JM Diesel – 3418 121st St SW, Lynnwood, WA
📞 (425) 745-6922
🌐 jmdiesel.com

10/22/2025

Cold Weather Oil Change

Thick oil = slow starts + worn engines.
When it’s cold out, your oil thickens — that means more resistance and less lubrication at startup.

We use high-quality synthetic oil and OEM filters so your engine stays protected all winter long. Stop by JM Diesel for your winter oil change and keep that truck running smooth.

📍 JM Diesel – 3418 121st St SW, Lynnwood, WA
📞 (425) 745-6922
🌐 jmdiesel.com

10/20/2025

Block Heaters Save Engines

Don’t make your engine start dry and cold.
A working block heater means your oil is warm, your engine fires instantly, and your turbo isn’t straining on thick oil.

JM Diesel installs, tests, and repairs block heaters and cords for Powerstroke, Cummins, and Duramax trucks. Plug in and protect your investment this winter.

📍 JM Diesel – 3418 121st St SW, Lynnwood, WA
📞 (425) 745-6922
🌐 jmdiesel.com

10/17/2025

Battery & Electrical Check

Cold weather kills weak batteries fast.
If your truck turns over slow or the lights dim at idle, you could be days away from a no-start.

JM Diesel offers battery and charging system diagnostics — we test voltage, glow plug relays, alternators, and block-heater circuits to make sure your diesel is ready for winter mornings.

📍 JM Diesel – 3418 121st St SW, Lynnwood, WA
📞 (425) 745-6922
🌐 jmdiesel.com

Address

3418 121st Street SW
Lynnwood, WA
98087

Opening Hours

Monday	7am - 3:30pm
Tuesday	7am - 3:30pm
Wednesday	7am - 3:30pm
Thursday	7am - 3:30pm
Friday	7am - 3:30pm

Telephone

+14256783843

Website

http://www.jmdiesel.com/

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