Big Tex Diesel

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Marion, TX
Big Tex Diesel

04/01/2026

Keeping your fleet on the road starts with staying ahead of maintenance 🔧🚛

This Bullhorn Plumbing van is in the shop getting the attention it needs because downtime costs money, and prevention is always cheaper than repairs. From brakes to suspension and everything in between, we make sure your work vehicles are safe, reliable, and ready to roll.

Got a fleet? Let’s keep it running strong 💪
Bring your fleet vehicles in and let us take care of the rest.

☎️ 210-480-1443

03/25/2026

Ram 2500 in shop getting an oil change and fuel filters.

Oil changes keep your engine lubricated and prevent wear.
Fuel filters protect your injectors from dirt and water.

👉 Oil: every 5k miles
👉 Fuel filters: every 10k miles

Stay ahead of the breakdowns, maintenance is always cheaper than repairs 👊

📍 Big Tex Diesel
☎️ (210) 480-1477

03/16/2026

No start on this 3rd Gen 5.9 Cummins came in needing ether just to fire. That’s usually a sign the engine isn’t getting the fuel pressure it needs to start.

After diagnostics we found high pressure fuel pump and injector failure, preventing the system from building proper rail pressure during cranking.

On common rail Cummins engines, the truck needs adequate fuel pressure before the ECM will allow the injectors to fire. When the pump or injectors fail, you’ll often see:
• Long crank or no start
• Engine only starts with ether
• Low rail pressure while cranking
• Rough running or misfires

Proper diagnosis is key before throwing parts at it. Once the high pressure fuel system fails, components often need to be replaced together to restore correct fuel pressure and prevent repeat failures.

Big Tex Diesel
Marion, Texas
210-480-1443

03/12/2026

If it’s marking its territory… it might be time to bring it in.

2019 F350 came in with an upper oil pan and rear main seal leak. We’ll get it sealed up and back on the road.

📞 210-480-1443
📍 Big Tex Diesel | Marion, TX

03/11/2026

If you own a 6.0 Power Stroke, you NEED to know about these.

High-pressure oil standpipes are a common failure point that can leave your truck cranking forever.

Quick breakdown in this video from our very own

02/12/2026

🚨 NOW HIRING 🚨
Big Tex Diesel is looking for an experienced Diesel Technician to join our team. Pay based on experience.

Send your resume to [email protected]

02/02/2026

Roses are red, violets are blue,
If you keep ignoring maintenance,
That breakdown’s on YOU 💀
Show your diesel some love ❤️
10% off Preventive maintenance services all February

📞 210-480-1443
Big Tex Diesel | Marion, TX

01/22/2026

Just wrapped up this 2019 F-450 AlumiDuty 💪
Came in with a P0402 — EGR valve stuck and a 97% soot load (she was begging for help).

We got it handled and back to where it should be:
✅ EGR issue resolved
✅ Soot load addressed
✅ Truck is healthy and ready to head back to the customer

Another Super Duty brought back to life 🚛🔥

01/13/2026

🚨 CP4 Failure = More Than a Fuel Issue 🚨

This 2011 Ford F-350 was towed in for a failed CP4.
Upon teardown, we discovered failed lifter/cam damage that couldve been missed , leading to catastrophic engine failure.

Instead of patching it together, the customer opted for:
🔧 Newer long block
🔧 Transmission upgrade
🔧 Preventive failure mods

When CP4s fail, they don’t always fail quietly.

12/12/2025

Just wrapped up a solid upgrade on this Ford F-550 👇
• Reman 6R140 installed
• PPE deep pan for extra fluid capacity
• Mishimoto external trans cooler to keep temps down

Built for better cooling, durability, and serious work. 💪🚚

Address

Marion, TX
78124

Website

https://linktr.ee/bigtexdiesel

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