Engine Repair, Rebuild, Overhaul & Conversion in Lone Rock, WI

Diesel Engine Repair in Lone Rock, WI

Your truck’s engine is its heart—when something goes wrong, it can take your whole vehicle out of commission. At GJ’s Service, we’re here to make sure that doesn't happen. Whether your vehicle is idling rough, suffering from low oil pressure, or dealing with excessive exhaust smoke, our team is ready to diagnose and repair the issue.

Our technicians are trained to handle everything from fuel system failures to issues with the electronic control module (ECM) and engine compression. If your vehicle is showing signs like poor fuel economy or hard starts, it might be time for a truck engine overhaul or at the very least a thorough inspection. We work on fuel injection systems, perform engine diagnostics, and fix problems related to the ignition system and cylinder head gasket.

Additional signs of engine trouble include knocking sounds, excessive vibration, or frequent overheating. These symptoms can point to deeper problems like timing belt wear or flattened camshafts, which require expert attention to prevent further damage. Whatever your engine needs—repairs, rebuilds, or complete conversions—we’ll get you back on the road with peace of mind.

What Makes Us Different

When you bring your truck to GJ’s Service, you're not just another number. We're a family-oriented team that truly cares about your success and safety on the road. From the moment you call us to the time you drive off, you'll experience a level of care and professionalism that’s hard to find anywhere else.

Our shop is known throughout the Lone Rock community for unmatched quality of work. Every repair is treated with the same precision and dedication, whether it’s a full engine rebuild or a simple sensor replacement. We don’t cut corners, and we make sure every customer leaves satisfied.

We also understand how downtime affects your bottom line. That’s why we work efficiently while maintaining the highest standards, ensuring your truck is back on the job as quickly as possible. With four experienced technicians on staff, we provide a personalized, hands-on approach you can trust.

Contact Us About Engine Repair Now: Call 608-583-2200!

If you're dealing with engine trouble, don’t wait. Whether it’s a full rebuild, a conversion, or just a warning light on your dash, call 608-583-2200 today to speak with a knowledgeable technician. Your truck deserves the best care—schedule your service now and let’s get you back on the road.

FAQs

What Areas Do You Serve For Engine Repair, Rebuilds, Overhauls, Or Conversions?

We are based at 420 East Forest Street, near the intersections of Forest Street and Pearl Street. In addition to Lone Rock, WI, we also proudly serve the surrounding areas including Spring Green, WI; Gotham, WI; Sauk County, WI; Iowa County, WI; and Richland County, WI.

What Are Common Signs My Engine Needs Repairs?

If your truck struggles to start, emits excessive smoke, or makes unusual knocking sounds, these could be signs of serious engine issues. Poor fuel economy or warning lights are also indicators something may be wrong. It’s always better to address these symptoms early to avoid costlier repairs down the line.

How Long Does An Engine Overhaul Take?

The time required for an engine overhaul depends on the extent of damage and the make of your truck. On average, it can take several days to a week. We’ll always provide a timeline and keep you updated on our progress so you can plan accordingly.

Still Have Questions or Need a Quote? Call Us Today!

Your engine is too important to leave to chance. Don’t wait until a small issue turns into a major breakdown. Call GJ’s Service at 608-583-2200 to schedule your engine repair or inspection. Let’s keep your truck running strong.