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Engine Repair

From a stubborn check engine light to a full rebuild — we diagnose accurately, fix it right, and stand behind the work.

Signs You Need Service

  • Knocking, ticking, or unusual engine noises
  • Loss of power or sluggish acceleration
  • Excessive smoke from the exhaust
  • Engine running hot or overheating
  • Check engine light staying on

How We Handle It

  • Complete engine diagnostics and inspection
  • Targeted repairs for damaged components
  • Full engine rebuilds when required
  • Engine replacement options if needed
  • Performance and reliability testing post-repair

Service Details

Engine problems don’t get better on their own. A small knock becomes a big knock. A minor oil leak becomes a smoking exhaust. The longer you wait, the more the repair bill tends to grow.

Here’s the good news: most engine issues can be caught and fixed long before they become catastrophic. Our job is to figure out what’s actually going on — not guess, not throw parts at it — and then tell you straight what your options are.

Sometimes that’s a $200 repair. Sometimes it’s a rebuild. Occasionally it’s a replacement. We’ve done all of it, on almost every make and model, for 16+ years. And we’ll always lay out the options clearly: what it costs, what it gets you, and what we’d do if it were our car.

Frequently Asked Questions

My check engine light is on. Does that always mean something major?
No. Check engine lights cover everything from a loose gas cap to a serious internal issue. Free diagnostic scans tell us which it is. Don’t ignore it, but don’t panic either.
Depends on the engine, the vehicle, and what’s wrong. Rebuilds preserve the original — important for classics and customs. Replacements are sometimes faster and more cost-effective for daily drivers. We’ll walk you through which makes sense for your situation.
The engine comes out, gets fully disassembled, every component is inspected, worn parts are replaced, and it’s reassembled to spec. Done right, a rebuilt engine can run as long as a new one. We’ve rebuilt engines that are still on the road a decade later.

Yes — that’s a big part of what we do at MAC Speed & Custom. Classic V8s, performance builds, custom configurations. If it has pistons, we’ve probably worked on it.

24+ Years

4.7 ★ Google Reviews

Guaranteed Workmanship

Contact Us
Call (714) 580-7848
Open Mon – Thu, 6:30am – 5pm