---
title: "Stop Smog — Clean Truck Check, Delano, CA | CTC Finder"
description: "Stop Smog in Delano, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/stop-smog-delano/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Stop Smog

Clean Truck Check tester in Delano, CA (Kern County).

> 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 | 829 Main St, Delano, CA 93215 |
| County | Kern County |
| Phone | (661) 421-4096 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Stop Smog 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 Reuchon Transport in Mc Farland, about 8 miles away. [See listing](https://ctcfinder.com/tester/reuchon-transport-mc-farland/).

## Clean Truck Check testers in Kern County

Stop Smog is one of 107 testing businesses in Kern County on CARB's public tester list. 89 of them offer mobile testing and 53 do smoke opacity tests. In Delano itself there are 6 listed businesses, 6 of them mobile.

## 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 Stop Smog offer mobile Clean Truck Check testing?

Yes. Stop Smog 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 Stop Smog test a 2012 or older diesel truck?

Stop Smog does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Reuchon Transport](https://ctcfinder.com/tester/reuchon-transport-mc-farland/) (about 8 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Stop Smog charge for a Clean Truck Check?

Stop Smog has not published prices with us; call (661) 421-4096 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 Stop Smog a CARB-credentialed tester?

Stop Smog 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

- **[Bertha Gonzalez](https://ctcfinder.com/tester/bertha-gonzalez-delano/)** — Delano, CA 93215 — (661) 586-9130 — 1 mi. Services: mobile testing, OBD testing.
- **[CVM truck and trailer repair](https://ctcfinder.com/tester/cvm-truck-and-trailer-repair-delano/)** — 1230 Lexington St, Delano, CA 93215 — (661) 586-0995 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[CVM Truck and Trailer Repair](https://ctcfinder.com/tester/cvm-truck-and-trailer-repair-delano-2/)** — 1230 Lexington Street, Delano, CA 93215 — (661) 370-7911 — 1 mi. Services: mobile testing, OBD testing.
- **[Hronis inc.](https://ctcfinder.com/tester/hronis-inc-delano/)** — 10443 Hronis Rd, Delano, CA 93215 — (661) 586-3221 — 1 mi. Services: mobile testing, OBD testing.
- **[Reyes Automotive LLC](https://ctcfinder.com/tester/reyes-automotive-llc-delano/)** — 315 High St, Delano, CA 93215 — (661) 778-5587 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Reuchon Transport](https://ctcfinder.com/tester/reuchon-transport-mc-farland/)** — 12239 Garzoli Ave, Mc Farland, CA 93250 — (661) 709-0460 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.