🚛 Semi-Truck Diesel Engine Repair (Detroit • Cummins • CAT)
Power Loss? Overheating? Strange Noises? Your Engine Is Talking to You.
When a diesel engine starts acting up, drivers feel it immediately — less pulling power, higher temps,
rough idling, or smoke that wasn’t there yesterday. These symptoms aren’t “normal wear.”
They’re early warnings from the heart of your truck: the engine.
In Dallas–Fort Worth, long hauls, heavy loads, and extreme heat make Detroit, Cummins, and CAT engines
work overtime. When something goes wrong, you can’t afford guesswork.
⚠️ Common Signs Your Diesel Engine Needs Immediate Attention
- 🔧 Loss of power going uphill or under load
- 🌡️ High engine temps or frequent derates
- 💨 Excessive black, white, or blue smoke
- 🛑 Hard starts or long cranking times
- 💧 Coolant or oil consumption increasing over time
- 🔊 Knocking, chattering, or metallic engine noises
These issues point to injector failure, coolant intrusion, worn piston rings, bad sensors, fuel delivery issues,
or turbo problems.
Ignoring them can lead to cracked heads, rod damage, or complete engine failure — repairs that can put your
truck down for weeks.
💥 Why Early Diesel Engine Repair Saves You Thousands
Diesel engines rarely fail overnight. They deteriorate slowly — one sensor, one injector, one seal at a time.
Fixing the issue early prevents:
- ❌ Overheating that warps heads
- ❌ Injector wash that damages cylinders
- ❌ Turbo failure from oil starvation
- ❌ Full engine shutdown during loads
For fleet owners, early intervention means predictable maintenance, reduced downtime, and lower cost per mile.
🔧 Dealer-Level Diesel Engine Diagnostics (Dallas, TX)
At Salazar Semi-Truck Repair Inc., we run the same diagnostic capabilities as big dealerships — without the
long wait times. We service all major diesel platforms:
- 🔥 Detroit Diesel (DD13, DD15, DD16)
- 🔥 Cummins (ISX, X15, ISB, ISC)
- 🔥 Caterpillar / CAT (C13, C15, 3406E)
Our diesel engine services include:
- ✅ Full ECM/ECU diagnostics & fault isolation
- ✅ Injector testing, replacement & coding
- ✅ Turbocharger diagnosis & repair
- ✅ EGR/DPF/DEF system troubleshooting
- ✅ Cooling system pressure testing
- ✅ Fuel system cleaning & high-pressure pump inspection
- ✅ Top-end rebuilds & head gasket repairs
- ✅ Full in-frame overhaul (Detroit, Cummins, CAT)
🛠 In-Frame Overhauls Out-frame
Whether your engine is blowing smoke, losing compression, or burning oil,
our experienced diesel mechanics perform precision overhauls with OEM-grade parts.
Every rebuild includes:
- 🔧 New pistons, rings, and cylinder kits
- 🔧 Rod and main bearings
- 🔧 Head resurfacing and valve work
- 🔧 New oil pump, gaskets, and seals
- 🔧 Overhaul calibration & break-in procedure
We verify every parameter boost, fuel pressure, timing, temps — to ensure your engine pulls stronger than before.
📍 Dallas Location Near I-30 & Loop 12
Our shop is strategically located for truckers moving through Dallas–Fort Worth.
With in-stock diesel engine parts and same-day diagnostics, we keep downtime to a minimum.
Why Drivers & Fleets Choose Salazar Semi-Truck Repair Inc.
- ✔ Experienced diesel engine mechanics with real dealer experience
- ✔ Transparent diagnostics — no guessing and no unnecessary repairs
- ✔ Fast turnarounds and honest timelines
- ✔ OEM parts for Detroit, Cummins, CAT
- ✔ Fleet-friendly pricing
📞 Your Engine Won’t Heal Itself — Fix It Before It Breaks
If your diesel engine is losing power, making noise, or overheating, don’t wait.
These issues escalate fast — and expensively.
👉 Call Salazar Semi-Truck Repair Inc. at (214) 761-9082
Same-day diesel engine diagnostics available.