---
title: "Direct Diesel Repair — Clean Truck Check, North Richland Hills, TX"
description: "Direct Diesel Repair in North Richland Hills, TX is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone…"
url: "https://ctcfinder.com/tester/direct-diesel-repair-north-richland-hills-tx/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Direct Diesel Repair

Clean Truck Check tester in North Richland Hills, TX.

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 8408 Hillcrest Ct, North Richland Hills, TX 76182 |
| Phone | (817) 989-0796 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Direct Diesel Repair can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is AIRLIMITS - FT Worth in Fort Worth, about 18 miles away. [See listing](https://ctcfinder.com/tester/airlimits-ft-worth-fort-worth-tx/).

## Clean Truck Check testers in Texas

Direct Diesel Repair is one of 46 testing businesses in Texas on CARB's public tester list. 37 of them offer mobile testing and 18 do smoke opacity tests.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Direct Diesel Repair offer mobile Clean Truck Check testing?

Yes. Direct Diesel Repair says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Direct Diesel Repair test a 2012 or older diesel truck?

Direct Diesel Repair does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [AIRLIMITS - FT Worth](https://ctcfinder.com/tester/airlimits-ft-worth-fort-worth-tx/) (about 18 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Direct Diesel Repair charge for a Clean Truck Check?

Direct Diesel Repair has not published prices with us; call (817) 989-0796 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Direct Diesel Repair a CARB-credentialed tester?

Direct Diesel Repair appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[AIRLIMITS - FT Worth](https://ctcfinder.com/tester/airlimits-ft-worth-fort-worth-tx/)** — Fort Worth, TX 76116 — (800) 788-5241 — 18 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Truck Check Express LLC -Fort Worth Mobile Testing](https://ctcfinder.com/tester/truck-check-express-llc-fort-worth-mobile-testing-fort-worth-tx/)** — 200 Garden Acres Dr, Fort Worth, TX 76140 — (214) 709-0552 — 19 mi. Services: mobile testing, OBD testing.
- **[DPF Filter LLC](https://ctcfinder.com/tester/dpf-filter-llc-dallas-tx/)** — 2202 Manana Dr, Dallas, TX 75220 — (972) 807-5757 — 19 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Joshua Leek](https://ctcfinder.com/tester/joshua-leek-mansfield-tx/)** — Mansfield, TX 76063 — (214) 200-1592 — 22 mi. Services: mobile testing, OBD testing.
- **[TEAL D - Mobile Diesel & Auto Technician](https://ctcfinder.com/tester/teal-d-mobile-diesel-and-auto-technician-mansfield-tx/)** — 7730 Grimsley Gibson Rd, Mansfield, TX 76063 — (214) 840-3195 — 22 mi. Services: mobile testing, OBD testing.