The first instinct after a hurricane passes is to get back to work. Loads are sitting. Dispatch is calling. You’ve already lost two or three days, and every hour the truck sits is an hour you’re not getting paid.
I get it. But running a rig that sat through a Florida hurricane without checking it first is how owner-operators end up with a $25,000 engine bill instead of a $300 inspection.
This is what we look for at our shop after a storm rolls through, and what you should be checking yourself before you put a load on.
Where Was the Truck Parked? That’s the First Question
If you parked at home, at a yard, at a Pilot off I-4, or at a customer’s distribution center, the answer changes everything about what you need to inspect.
A truck parked on high ground that only saw wind and rain is a different inspection than a truck that sat in eight inches of standing water for two days. Most of what kills a diesel after a storm isn’t the wind. It’s water — where it got in, how long it sat, and whether you started the engine before you knew.
Saltwater is worse than freshwater. If you were anywhere within about 60 miles of the coast, salt spray rode the wind inland and settled on everything. NOAA’s hurricane research notes salt aerosol can travel well past the immediate coastline during a major storm, and it eats through aluminum, brake lines, and electrical connectors faster than most drivers realize.
Figure out the worst-case water exposure your truck saw. That tells you how deep the inspection needs to go.
Don’t Start the Engine Until You’ve Checked These Things
This is the part most people get wrong. The truck’s been sitting, you climb in, you turn the key. If water got into the cylinders through the air intake, you just hydrolocked the engine. That’s a rebuild. Sometimes a replacement.
Check first:
- Air filter housing. Pop it open. If there’s water, mud, or debris in there, do not start the engine. Water in the intake almost always means water in the cylinders.
- Oil dipstick. Pull it. Oil should look like oil. If it looks milky or like coffee with cream, water got into the crankcase. Don’t start it.
- Coolant reservoir. Same test. If the coolant looks oily or has a film on top, you’ve got contamination.
- Fuel/water separator. Most trucks have one. Drain it. If a lot of water comes out, drain the tanks too before you crank.
- Visible water lines on the chassis, frame, or inside the cab. A water line tells you exactly how high it got. If it’s above the bottom of the doors, the electrical harness probably got wet.
If any of those four checks come back bad, get it towed in. Don’t crank it. We’ve seen drivers turn a $1,200 fix into a $20,000 problem because they didn’t want to wait on a tow. If you need help getting it here, our 24/7 roadside team can come to you.
What Florida Heat Does to Wet Components
Something most drivers don’t think about: even if your truck only got rained on — no flooding, no surge — the days after a hurricane in Central Florida are usually 90 degrees with full sun. Water that got into wiring harnesses, sensors, or behind connectors doesn’t dry. It steams, then it corrodes.
A lot of post-hurricane electrical problems don’t show up the day the storm passes. They show up two weeks later, on a load to Atlanta, when a sensor that’s been quietly oxidizing finally throws a code and forces a regen that won’t complete. Or worse — the DPF system goes into derate on a grade and you’re sitting on the shoulder.
If you suspect water got anywhere near the electrical bus, bring it in for a full computer diagnostic scan before your next long haul. We’d rather find a flaky sensor in the bay than have you find it in Macon.
Tires, Brakes, and Trailer Connections
Wind damage isn’t just trees on the cab. Debris on the road during and after the storm chews up tires, and most drivers don’t see the sidewall damage until they’re already loaded.
Walk the truck. Every tire, all the way around. Look for:
- Cuts or punctures in the sidewall
- Anything embedded in the tread (nails, screws, glass)
- Pressure that doesn’t hold
For brakes, the issue is usually rust on the rotors and drums after a few days of sitting in moisture. That part normally works itself out in the first few miles, but if you hear grinding or pulling that doesn’t go away after a short test drive, get it looked at. Brake chambers and slack adjusters can also pick up water if the truck sat low.
Trailer connections — gladhands, the seven-pin connector, anything that exposes contact surfaces — get sandblasted by storm debris and can corrode within days. Pull them apart, clean them, dielectric grease, reconnect. Five minutes of work that saves you a roadside on the Turnpike.
The AC and Cab Stuff That Gets Overlooked
If water got into the cab, the floor insulation holds it. You’ll smell it before you see the damage. Mold under the floor mats is annoying. Mold in the HVAC blower that’s been running humid air through the cab for a week is a health issue. If your AC is throwing weak air, smelling musty, or icing up after the storm, get the AC system looked at before you put 600 miles on it.
The Insurance Side Nobody Tells You About
If your truck took flood damage, your commercial policy may cover it, but only if you document the damage before any repairs start. Photos with timestamps. Water lines visible. Don’t move the truck if you don’t have to. Call your insurance before you call us, and call us before you call a tow.
We’ve worked on enough flood-damaged trucks to know the claims process eats time. The drivers who came out of it best were the ones who had photos from the day they got back to the truck, before anyone touched anything.
Things That Are Worth Fixing vs. Things That Aren’t
Not every post-storm issue is worth a shop visit. Surface rust on the frame, a few dings in the cab, a cracked side mirror — that’s a weekend with a wrench.
What’s worth bringing in:
- Anything electrical that’s acting weird (intermittent gauges, slow cranks, ghost codes)
- Any sign of water in oil, coolant, or air intake
- Any time the truck sat in standing water above the wheel hub
- Engine that’s running rough, idling weird, or losing power
- DPF or aftertreatment warnings that came on after the storm
- Brake performance that hasn’t normalized after 50 miles
If any of that is happening, bring it in before your next load. We’re a semi truck repair shop in Orlando, FL at 9640 Sidney Hayes Rd, off the Turnpike. Call (407) 591-6747 to schedule, or just pull up if you’re nearby.
One Last Thing About Timing
The week after a hurricane, every shop in Central Florida gets slammed. We try to prioritize trucks that are clearly dangerous to run — anything with possible water in the engine or aftertreatment. If that’s you, mention it when you call.
If you’re checking in for a “just to be sure” inspection and the truck seems fine, we’ll get to you, but it might be a day or two. That’s still better than finding out in Tifton that the storm did more damage than you thought.