Diesel Truck Inspection

Power Stroke, Cummins, and Duramax. A diesel is a big buy, and a bad one is a very big bill. We know where they hurt.

Diesel Truck Inspection from PPI Auto. A certified inspector checks it where it sits and gives you a written report, so you know where you stand.

At a glance

Diesels last a long time — if they were cared for.

The fuel system, the emissions parts, and the turbo are where the money is. We check all three.

What we check

CP4 vs CP3 pumps, injectors, and signs of past fuel-system failure.

DPF, EGR, and DEF health — and any illegal deletes or tunes.

Turbo play, boost leaks, and actuator function.

Head studs, blow-by, coolant condition, and oil analysis if needed.

Radiator, EGR cooler, and head-gasket history.

Shift quality on tuned trucks, clutch wear, and driveline.

What you get

Common questions

Why does the CP4 fuel pump matter?

If a CP4 fails, it can send metal through the whole fuel system. That's a huge bill. We check for it.

Can you spot an emissions delete?

Usually yes. A delete can fail smog and hurt resale, so it matters.

Where do you inspect?

All 50 states.

Do you scan for codes?

Yes, a full live scan every time.

One call gets it done

Ready when you are

Tell us the vehicle and where it is. We handle the rest.

Prefer to send details? We'll call you back.

Our own photos

Shot on real jobs, not bought from a stock library. This is the same work you get when you book one.

Every photo on this page is from a real PPI Auto inspection. Plates, names, VINs and signatures are blurred to protect the people involved.

Certified, unbiased, anywhere in the country.