Engine Repair & Rebuilding by San Antonio’s Auto Service Experts
Engine repair and rebuilding in San Antonio — diagnosed first, options explained clearly before any work is authorized. Whether the problem is isolated to one component or requires a complete overhaul, our ASE-Certified Master Technicians identify the exact cause and walk you through the right path for your vehicle.
Why choose our Family Run Engine Repair Shop?
- Certified Expertise – All work performed by ASE-Certified specialists.
- Advanced Diagnostics – State-of-the-art technology for accurate troubleshooting.
- Comprehensive Service – From preventative care to complete rebuilds.
- Wide Vehicle Coverage –
- Domestic gas & diesel: Chevrolet, Ford, Chrysler, Dodge
- Imports: Honda, Toyota, Acura, Mitsubishi, Subaru, Lexus,
- European: Porsche, BMW, Mercedes, Volkswagon, Audi
- Exceptional Warranty Coverage – lasting repairs designed to extend the life of your vehicle and provide long term value.
- Hybrid Capabilities – See our Hybrid Vehicle Services page for information on hybrid electric motor repair, give us a call and speak with a knowledgeable automotive service consultant.
Certified Engine specialists at Auto Service Experts
ASE Certified Master Technician with over 20 years of experience specializing in gas and diesel engine repair on duty at all times.
Repair or Overhaul?
Understanding Your Engine Repair Options
When a major engine problem is confirmed, there are five repair paths. The right one depends on which components failed, the overall condition of the engine, and how long you plan to keep the vehicle.
Targeted Repair When the problem is isolated — a blown head gasket, failed oil pump, or specific bearing damage — and the rest of the engine is in sound condition, replacing only the failed components is the most practical solution. We inspect the full engine before recommending this path to confirm the damage is truly contained.
Engine Rebuild Complete disassembly, inspection, and replacement of worn components — soft parts including gaskets, seals, rings, and bearings, plus hard parts such as timing components and pistons where needed. The engine is reassembled to factory specifications. Our rebuilds are backed by a 3-year/36,000-mile warranty on parts and labor.
Remanufactured Engine Factory-disassembled and rebuilt to OEM specs, then shipped to the shop for installation. Quality varies by remanufacturer — some reuse more components than others. We work with remanufacturers whose standards we have verified over more than 20 years.
Used Engine Lower upfront cost but carries unknown wear history. A practical short-term option for high-mileage vehicles or tight budgets, but not a long-term solution in most cases.
New Engine The highest cost option. Worth considering when the vehicle has significant remaining value and no other path makes sense.
Chevy Express Van Engine Replacement: Step-by-Step Photo Story
When a vehicle reaches 259,000 miles, major components can begin to fail. At Auto Service Experts in San Antonio, our ASE-Certified mechanics specialize in remanufactured engine installations that restore performance and prolong the life of your vehicle. Here’s a detailed look at the removal process on a 2021 Chevy Express Van, documented step-by-step through photos.
Under Hood Before Removal
This first photo shows the original engine bay with the old motor still intact and the front clip (radiator, condenser, bumper, grill, and headlights) removed. At over a quarter of a million miles, this Chevy Express had given years of service but was ready for a fresh start. Our technicians begin every job with a full inspection and preparation of the workspace.
Engine Ready for Extraction
The old unit is now visible and ready to be removed. To ensure a smooth removal process, wiring, belts, hoses, and accessories have been disconnected. This step requires precision to avoid damaging surrounding components.
Engine Bay After Removal
The failed unithas been removed, and the engine compartment is now empty. Proper support equipment is required to safely lift and remove heavy components in motor or transmission replacements.
Remanufactured Chevy Engine Ready for Installation
This image showcases the remanufactured unit. It has been cleaned, tested, and is ready to bring this Chevy back to life. Remanufactured units are rebuilt to factory specifications and backed with a warranty to provide performance and reliability. They can also save you a great deal of money compared to a brand-new engine.
Side View of the Remanufactured Motor
From this side view, you can see the craftsmanship and attention to detail that goes into the remanufacturing process. Every component is inspected and replaced as needed, including seals, gaskets, and wear items, to ensure factory-fresh dependability.
Installation in Progress
In the final steps, the new unit is lowered into place and carefully directed into the bay. Ensuring proper alignment and connection of mounts, wiring, and fluid lines is essential for proper functioning. Once secured, the van will be tested by an ASE Certified Master Mechanic to confirm everything operates smoothly before returning to the road.
Auto service Experts is San Antonio’s Top Chevrolet Repair Dealer Alternative
Engine Repair & Rebuilding Advice
The manufacturer recommended preventative maintenance schedule is designed to help you avoid costly damage to your vehicle. For example, if you do not have a timing belt replacement BEFORE it breaks, it can bend valves and damage the cylinder head. Failure to have a coolant flush or cooling system on time can cause your car to overheat and destroy the engine. If you don’t change your oil frequently enough it turns to sludge, does not provide adequate lubrication, and damages expensive components.
Automotive maintenance, including timing belt changes, coolant changes, and oil changes, keeps your car or truck running at peak performance. It also helps to prevent damage, which can require a rebuild or replacement to fix.
***Click Here to See the Benefits of and Differences Between
Engine Repair, Rebuilding, Remanufacturing, and Replacement.
Engine Failure Diagnostics
ASE Master Technician at Auto Service Experts performs diagnostics on an Audi A6 2.0.
A mechanic error caused this blown motor while the oil was being changed at a different local San Antonio repair shop.
We back all of our motor rebuilds with a 3 Years/ 36,000 Mile Warranty on all parts and Labor.
Complete Overhauls involve machine work including:
• Overboring Cylinders
• Rebuilding Cylinder Heads
• Rebore Engine if needed, and replace pistons with the correct size
• Regrinding Exhaust and Intake Valves and Seats
• Resurfacing Cylinder Heads
• Turning Crankshaft
If your vehicle has a blown head gasket, this often causes damage to other components and automotive systems, such as your auto cooling system. See our article on blown head gasket repair in San Antonio, TX for more information. Topics include common symptoms of a blown head gasket, its function, how it is tied to other internal systems and head gasket repair cost.
Engine and Transmission Replacement on Diesel Ram 2500
Get Directions to the most reliable Nearby engine repair shop, Auto Service Experts.
Rebuild on Ford F250 by ASE Certified Mechanic
A complete overhaul gasket kit includes the following replacement parts:
• Antifreeze – replace
• Bearings – When worn, they may cause low oil pressure or noise. Bearings may also come loose and cause damage to the crankshaft and connecting rod.
• Damaged bearings may be due to inadequate lubrication, failure to keep up with necessary maintenance and oil changes, or worn or clogged fuel pumps.
• Cam Bearings (if applicable)
• Main Bearings
• Rod Bearings
• Head – completely disassemble and replace.
• Exhaust Manifold Gasket
• Exhaust Valves
• Intake Manifold Gasket
• Intake Valves
• EGR Tubes and Gaskets
• Head Gasket
• OEM Spark Plugs
• Oil Pan Gasket
• Oil Filter
• Oil Pump
• Pistons – Cracked pistons may fail to seal properly, causing damage to cylinders or bearings, reducing power and fuel economy, increasing emissions, oil dilution & sludge formation.
• Piston Rings
• Valve Guide Seals
• Valve Springs
• Water Pump
• Water Pump Gaskets
• Timing Chain/ Timing belt (depending on vehicle design)
• Tensioners and Guides on timing chain
***At Auto Service Experts, when our mechanics perform a rebuild, we do not charge additional labor fees for minor extras or incidentals such as motor mounts, spark plug wires, etc. You pay for the additional parts only, as there is not a great deal more labor involved.