Complete Guide to Diesel Engine Rebuilds at Kash Diesel & Auto

August 11, 2025

Complete Guide to Diesel Engine Rebuilds at Kash Diesel & Auto

Diesel engines are known for their power and durability—but even the toughest engine reaches a point where a rebuild is necessary. Whether your Cummins, Powerstroke, or Duramax engine is blowing smoke, losing compression, or just showing its age, a diesel engine rebuild can restore performance, extend lifespan, and even save you money compared to a full replacement.

At Kash Diesel & Auto in Sicklerville, NJ, we specialize in comprehensive diesel rebuilds for trucks across New Jersey, Pennsylvania, and Delaware. Here’s everything you need to know.


What Is a Diesel Engine Rebuild?

A rebuild involves disassembling the engine, inspecting and replacing worn or damaged parts, and restoring it to OEM or better-than-stock condition. This includes:

  • Removing and inspecting pistons, bearings, rods, crankshaft
  • Resurfacing cylinder heads
  • Replacing gaskets, seals, and rings
  • Addressing valve issues, timing, and injectors
  • Precision reassembly and tuning


Signs You Might Need a Diesel Rebuild

1. Excessive Oil Consumption

Burning through oil fast? This could indicate worn piston rings or valve seals.

2. Blue or White Exhaust Smoke

Smoke at startup or under load can be a sign of oil or coolant leaking into the combustion chamber.

3. Loss of Power or Compression

A tired engine often struggles under load or idles roughly. Poor compression readings confirm deeper issues.

4. High Mileage with Past Repairs

If your diesel has 200k+ miles and has had multiple repairs, a full rebuild may be more cost-effective than piecemeal fixes.

5. Knocking or Clattering Sounds

Loud engine noises, especially on cold start, often signal bearing wear or timing issues.


Why Choose Kash Diesel & Auto for Your Rebuild?

We’ve rebuilt dozens of diesel engines for drivers, contractors, and fleet managers who depend on reliable power. Our Sicklerville shop features:

  • 5 bays, capacity for 9 vehicles at a time
  • Diesel specialists with deep knowledge of Cummins, Duramax & Powerstroke
  • Performance upgrade options during rebuilds
  • Custom warranty support for every job
  • Fast turnaround times and honest diagnostics


Rebuild vs. Replace: What’s Better?

A full engine replacement can cost $10,000–$15,000 or more. A rebuild, done right, typically costs less while offering comparable results:

Factor | Rebuild | Replace

Cost | $4,000–$9,000 | $10,000+

OEM Part Retention | Yes | No

Performance Tuning | Yes | Limited

Warranty | Custom per job | Factory default


FAQs

How long does a diesel rebuild take?

Most rebuilds take 1–2 weeks depending on parts and shop schedule.

Can I upgrade performance during a rebuild?

Absolutely. Many clients add turbos, studs, or tuning while the engine is apart—saves on labor.

Will a rebuilt engine last as long as new?

With proper care, yes. Many rebuilt diesels go another 200k+ miles.

Do you rebuild for fleets or businesses?

Yes, we work with contractors, trucking companies, and diesel fleet managers across the Tri-State area.

Do you warranty your rebuilds?

Yes—we offer custom warranties based on each job, part type, and usage.


Schedule Your Diesel Engine Evaluation

Think your diesel might be ready for a rebuild? Don’t wait for a roadside failure. Call Kash Diesel & Auto at (267) 978-6620 or visit us at 883 Jarvis Road in Sicklerville, NJ for a full engine inspection and rebuild quote.

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