Frequently Asked Questions

EGR cleaning removes carbon deposits and residue from the exhaust gas recirculation valve and cooler. This restores a proper air and fuel mixture, improves engine efficiency, and reduces harmful emissions caused by clogged components.

No. The EGR valve recirculates exhaust gas back into the intake to lower combustion temperatures, while the DPF traps soot in the exhaust. They serve different purposes and require separate cleaning and maintenance processes.

Warning signs include white smoke from the exhaust, rough idling, reduced power, engine overheating, and check engine codes. Driving with a failing EGR system can lead to overheating and turbo damage, so prompt inspection matters.

A diesel EGR cooler often lasts around 80,000 miles, though this varies with driving habits, maintenance, and operating conditions. Coolant loss, overheating, or white smoke can signal a clogged or leaking cooler that needs attention.

Power loss can come from clogged fuel injectors, a failing turbocharger, restricted air or fuel filters, a blocked DPF, or emissions system faults. Accurate diagnostics pinpoint the real cause so we can recommend targeted repairs.

Hard starts often trace back to fuel system issues, worn glow plugs, weak batteries, low compression, or contaminated fuel. We use advanced diagnostics to identify the source and restore reliable starting in cold and demanding conditions.

Oil change intervals usually fall between 5,000 and 10,000 miles, but heavy hauling or frequent idling may call for more frequent changes. Always follow your manufacturer guidelines or ask us for advice based on how you use your truck.

At I&T Diesel Repair, we service medium and heavy duty trucks, trailers, and commercial fleet vehicles. From single work trucks to larger fleets, we handle routine maintenance and complex mechanical repairs for diesel equipment that depends on consistent performance.

Yes. We offer welding and fabrication to repair structural damage, build custom parts, and reinforce weak points on trucks and trailers. This work supports safety, durability, and D.O.T. compliance for vehicles under heavy daily use.

Yes. I&T Diesel Repair is fully licensed and insured, giving you confidence that every service meets professional and industry standards. Our credentials reflect our commitment to safe, reliable, and accountable diesel repair work.

We serve Green Bay, Wisconsin and surrounding communities across Brown, Door, Kewaunee, and Oconto counties, including Allouez, Ashwaubenon, De Pere, Howard, and Sturgeon Bay. If you are unsure whether you are in our service area, just reach out.

Yes. We support owner operators, small businesses, and larger fleets. Our shop is equipped to keep working trucks and fleet vehicles running reliably, with maintenance and repair plans built around how each vehicle is used.

If your truck breaks down, contact us right away. We coordinate with a trusted local towing company to bring your vehicle in, then our team moves quickly to diagnose the issue and outline clear repair solutions.

Preventive maintenance helps avoid sudden breakdowns, extends engine life, improves fuel economy, and supports resale value. For commercial operators, it also helps prevent D.O.T. violations and keeps trucks working when a stalled vehicle would otherwise mean lost time.

Removing or deleting DPF and EGR systems is illegal across most of North America. Rather than delete these components, we clean, repair, and service them to protect emissions performance while keeping your engine healthy and compliant.