L.I. Diesel Guys

09/02/2026

Your diesel is trying to tell you something. 👂

Swipe for the 5 signs it needs to be seen 👉

⚠️ Warning light on
🐢 Loss of power
💨 Excess smoke
🔑 Hard starts
⛽ Filling up more than usual

Catch it early, save yourself the big repair.

Spot any of these? Let's take a look. 🔧

📞 631-823-1000

08/31/2026

Not every shop will touch an older truck. We will. 💪

Carlo brought us his 1990 International that had lost power. A lot of shops turned it away. We took it in.

Mike and our mechanic Pete tracked it down and got it running again. 🔧

⭐⭐⭐⭐⭐
"Solid guys. I'd 100% recommend this shop. They know what they're talking about and good communication. 10/10."

Old or new, diesel is diesel. Bring it in. 🚛

📞 631-823-1000

08/29/2026

This is what a real repair looks like. 🔥

Cab off. Frame bare. Every system exposed.

This is the deep, dealer-level work most shops won't touch, and we bring it to life. 🔧

If it runs on diesel, we've got it. 🚛

📞 631-823-1000

08/28/2026

Every shop has a story. Here's ours. 👇

We started LI Diesel Guys in 2021 with one idea: build the shop we always wished existed.

Our founders came up in the dealer world and kept seeing the same thing. Trucks treated like numbers. Owners rushed through.

So we did it differently.

Dealer-level diagnostics, OEM parts, and factory training. Paired with the honesty and respect you only get from a family shop.

Our motto hasn't changed since day one: fix it right the first time. 💪

📞 631-823-1000

08/27/2026

When it comes to diesel, trust is everything. 🛠️

🏆 3X Best of Long Island winner
🔧 Factory-trained technicians
💻 OEM diagnostic equipment
✅ 2-year, unlimited-mileage warranty on most repairs

We built our name on fixing it right the first time.

📞 631-823-1000
🌐 lidieselguys.com

08/21/2026

Behind every repair is a team that does not cut corners.

Factory trained, award winning, and built on doing it right the first time. That is the standard here, whether it is a medium duty truck or a piece of heavy equipment.

Ready to book? Call 631-823-1000 or visit lidieselguys.com.

08/19/2026

Quick one that saves you money.

Check your coolant regularly, especially in the summer. A low or dirty cooling system is one of the fastest ways to cook an engine, and it is one of the easiest things to stay ahead of.

Two minutes now beats a tow later.

08/18/2026

08/15/2026

Heavy duty repair up close.

Parts pulled and laid out before everything goes back together. This is where the real work happens.

08/13/2026

Heavy equipment repair done right.

Long Island's diesel and equipment guys.

631-823-1000
lidieselguys.com