Truck Heavy-Duty Engine Repair, Rebuild, Overhaul & Conversion in St. John’s, FL

Small leaks. Unusual knocks. Sluggish starts. These early signs of engine trouble can snowball fast. Our expert engine repair and rebuild services in St. John’s, FL, stop minor issues before they wreck your route—or your revenue.

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Diesel Engine Repair in St. John’s, FL

When your engine is off, everything else suffers. Small issues like minor leaks or strange noises can quickly snowball into major failures. Whether you're hauling long-distance or working locally, engine problems mean downtime, lost revenue, and risk. You may need repair or a full overhaul if you're seeing:

  • Excessive black, blue, or white smoke
  • Knocking, grinding, or misfiring
  • Loss of power, poor acceleration, or stalling
  • High oil consumption or coolant loss
  • Frequent overheating or warning lights

Our engine services include:

  • Complete diesel engine diagnostics
  • In-frame and out-of-frame engine overhauls
  • Full engine rebuilds for power and reliability
  • Engine component replacement (turbochargers, injectors, fuel pumps)
  • Engine conversion services for specific use cases or performance needs

Experience the All In One Difference

Customer-first approach: You’ll get clear advice based on your truck’s condition, your budget, and how you use it. No cookie-cutter solutions here!

Unmatched warranties: Whether it’s a minor fix or a full rebuild, your engine repair is backed with coverage that gives you lasting peace of mind.

Top-tier repairs: Your engine is worked on by skilled mechanics who specialize in heavy-duty diesel systems and complex engine builds.

Fast turnaround times: Every day counts. That’s why we work fast without cutting corners—so your truck gets back to earning.

Tailored service: Whether you're an owner-operator or managing a fleet, your service is built around your truck’s specs and job demands.

Contact Us About Truck Engine Repair Now: Call 904-870-1511!

A weak or failing engine can sideline your entire operation. Call 904-870-1511 today and schedule your inspection. From quick diagnostics to full overhauls and rebuilds, whatever you need, we’ve got you covered!

FAQs

What areas do you serve for heavy-duty engine repair?

St. John’s Location

Based at 1261 County Rd 210, St. John’s, FL 32259, near County Road 210 and I-95, we proudly serve Jacksonville, FL; Orange Park, FL; St. Augustine, FL; Green Cove Springs, FL; Fleming Island, FL; Fruit Cove, FL; Julington Creek, FL; Nocatee, FL; and Ponte Vedra Beach, FL.

Palatka Location

Located at 558 US-17, Palatka, FL 32177, we serve St. Augustine, FL; Green Cove Springs, FL; Crescent City, FL; Interlachen, FL; Keystone Heights, FL; and Hastings, FL.

What does an engine overhaul include?

An engine overhaul replaces or restores all critical internal components—like pistons, rings, bearings, seals, gaskets, and sometimes the camshaft or crankshaft. It’s designed to restore factory-level performance without replacing the entire engine.

When should I rebuild a truck engine?

Rebuilds are ideal when your engine shows significant wear, but the block is still in good shape. If you're experiencing low compression, high oil consumption, or poor fuel efficiency, a rebuild can bring it back to life without the cost of full replacement.

How can I get heavy-duty engine services?

Give us a call at 904-870-1511, and we’ll schedule your inspection and walk you through the repair or rebuild process. Whether it’s restoring lost power or converting for better performance, we’ve got you covered.

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Heavy duty Truck Repairs

No guesswork. No delays. Just diesel repairs done right. Whether you're dealing with DPF issues, electrical faults, coolant leaks, or brake problems, you’ll get fast, brand-specific diagnostics and solid fixes. From highway haulers to heavy equipment and RVs, the team tackles each job with precision—so you don’t come back for the same problem twice.

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Testimonials

Albert

Shoutout to Pedro and his staff of great people. They do a good job on diagnosing and making sure your truck is fixed the right way.

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Ride the Wave Trucking

I had a great experience here. The quality of service and professionalism of the staff were terrific. There were some issues with the truck, and after bringing it to this location, they were able to fix the problem right away.

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Ricardo Montevon

Go see Pedro. I had a major gear failure on a 2014 Volvo and the shop worked with me to get it resolved. He allowed me to get some parts that saved me some money and he stuck with the truck til it was done right.

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Andrew Elliot

My name is Andrew to all my truck drivers out there ALL IN ONE TRUCK CENTER is the place to visit had my injectors and rear differential replace and the job was excellent

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Victoria Roy

Absolutely a God send. Very helpful, friendly, and understanding. Alanzo communicated with me on everything that needed repaired on my 2016 Freighter, and offered me alternatives.

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Ryan Huffman

I spoke with both Pedro and Alonzo about an issue with my fuel/water separator. They were both very patient and understanding and gave me great advice to try to save me from a tow bill.

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