An exhaust leak isn't just loud. It's carbon monoxide where it shouldn't be, failed emissions tests, wrecked oxygen sensors, and a check-engine light that won't go away. We weld, replace, and repair exhaust the right way.
A modern exhaust system has four jobs: route combustion gases out from under the vehicle, muffle the noise, scrub pollutants through the catalytic converter, and provide feedback to the engine computer from the upstream and downstream oxygen sensors. When any part of that system fails, the others start to work against you. A pinhole leak before the oxygen sensor makes the sensor think the engine is running lean, so the computer adds fuel that the engine doesn't need. A clogged converter chokes the engine and kills power. A failing sensor makes you fail emissions and tanks your fuel economy at the same time.
Most shops either weld everything or replace everything. We do what the situation calls for. A small crack in a flex pipe can often be welded for a fraction of the cost of a new section. A rotten muffler needs to be replaced. A cracked manifold is sometimes repairable and sometimes not — and we'll tell you straight which your vehicle needs. We also do OE-quality catalytic converter replacement with parts that meet EPA and California CARB standards, so you don't end up with a part that won't pass a future emissions test.
Georgia drivers in covered counties need to pass emissions for registration. An exhaust leak, a failed converter, or a bad oxygen sensor will all fail you. We diagnose the real cause with a smoke test, a scan of both upstream and downstream sensors, and a physical inspection — not a parts-cannon guess.
From the exhaust manifold bolted to the head all the way back to the tailpipe — here's the work we do on exhaust systems.
Leak location matters — a leak before the catalytic converter causes fuel-trim and emissions problems the driver may never hear. A leak after the converter is usually just loud. We smoke-test the system and identify the exact leak points before we quote anything.
Rust-through, broken baffles, or a blown-out muffler — we use OE-fit direct replacements or quality aftermarket units depending on what fits the vehicle and your budget. Welded in for a permanent, leak-free installation.
Flex sections, mid pipes, tailpipes — whatever rusts through gets welded or replaced. We use mandrel-bent tubing where it's needed so gas flow stays smooth and the engine doesn't see back-pressure changes.
When the converter is honeycomb-plugged from burning oil or contaminated with coolant, it needs to come out. We install EPA/CARB-compliant replacement converters so the part is legal now and legal later.
Upstream O2 sensors tell the computer how to meter fuel. Downstream sensors grade the converter. A lazy sensor kills fuel economy and fails emissions. We test and replace the right sensor — not a bank of them on a guess.
Cracked manifolds cause exhaust-tick sounds on cold start that go away when the vehicle warms up. We replace bolts, gaskets, and manifolds — including the notoriously difficult ones on cylinder heads that have been exposed to years of heat cycling.
Broken exhaust hangers cause the system to droop, vibrate, and crack. A flange gasket leaks at the collector or cat joint. We replace the hardware that holds the system up and keeps it sealed — so the repair lasts.
Full mig-welded repairs with the right alloy tubing, aluminized or stainless as the situation calls for. For odd or orphan vehicles where a bolt-in part isn't available, we fabricate sections from scratch.
After any exhaust or converter work, we verify oxygen sensor signals, run the readiness monitors to completion, and confirm the vehicle is ready to pass emissions before you drive it out.
Some exhaust problems are loud. Others you can only detect from a check-engine code or a failed emissions test. Either is worth bringing in.
A leak starts small and gets worse. A noise that began as a "ticking" on cold start and grew into a constant drone is a leak that's opened up. The bigger it gets, the farther back in the system you need to replace.
That's carbon monoxide — odorless and colorless on its own, but the unburned hydrocarbons you smell travel with it. A leak upstream of the cabin air intake is a safety issue. Don't drive it, get it fixed.
A P0420/P0430 catalytic efficiency code is the #1 reason for emissions failure. It's usually the converter, sometimes a sensor, and sometimes an upstream problem like burning oil that's killed the converter early.
A failing upstream oxygen sensor, or a small exhaust leak before the sensor, makes the computer over-fuel the engine. The check-engine light may not be on yet, but miles per gallon will drop.
A clogged converter is the classic "rev it up and it won't accelerate" complaint. The engine revs but the vehicle crawls. A back-pressure test at the front of the converter confirms it.
A dislodged heat shield is a cheap, loud rattle that drives you crazy. A broken internal baffle inside the muffler or converter is a different rattle — one that needs the part replaced. We tell them apart and fix the right one.
A broken hanger drops the exhaust low enough to catch on speed bumps and driveways. Cheap hanger replacement now is a lot cheaper than replacing everything you rip off when the whole system pulls loose.
P0135 (heater circuit), P0171 (lean), P0420 (catalyst efficiency), P0430 (bank 2 catalyst). Each tells a different story, and the right fix depends on the story, not the code number.
Whether it's a noisy muffler, a failed converter, a stubborn O2 code, or an exhaust system that needs a complete rework — we handle it.
Oxygen sensor codes, catalyst efficiency codes, and emissions-readiness issues all start with a proper diagnosis — not a parts swap.
A burning-oil problem or a coolant leak can destroy a catalytic converter. Fixing the engine problem first protects the exhaust work.
Oxygen sensor circuits, heater circuits, and exhaust system wiring all need proper electrical diagnosis when the problem isn't the sensor itself.
