---
title: "Mor-Jon, Inc — Clean Truck Check, Crescent City, CA"
description: "Mor-Jon, Inc in Crescent City, CA is on CARB's Clean Truck Check tester list. Offers OBD testing, smoke opacity (non-OBD) testing, motorhome testing. Phone…"
url: "https://ctcfinder.com/tester/mor-jon-inc-crescent-city/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Mor-Jon, Inc

Clean Truck Check tester in Crescent City, CA (Del Norte 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 | 137 E Washington Blvd, Crescent City, CA 95531 |
| County | Del Norte County |
| Phone | (707) 464-4131 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Mor-Jon, Inc 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 | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Hambro Waste Solution Group in Crescent City, about 1 mile away. [See listing](https://ctcfinder.com/tester/hambro-waste-solution-group-crescent-city/).

## Clean Truck Check testers in Del Norte County

Mor-Jon, Inc is one of 3 testing businesses in Del Norte County on CARB's public tester list. 2 of them offer mobile testing and 2 do smoke opacity tests. In Crescent City itself there are 3 listed businesses, 2 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 Mor-Jon, Inc offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [Hambro Waste Solution Group](https://ctcfinder.com/tester/hambro-waste-solution-group-crescent-city/) (about 1 mile).

### Can Mor-Jon, Inc test a 2012 or older diesel truck?

Yes. Mor-Jon, Inc lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does Mor-Jon, Inc charge for a Clean Truck Check?

Mor-Jon, Inc has not published prices with us; call (707) 464-4131 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 Mor-Jon, Inc a CARB-credentialed tester?

Mor-Jon, Inc 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

- **[Hambro Waste Solution Group](https://ctcfinder.com/tester/hambro-waste-solution-group-crescent-city/)** — 445 Elk Valley Rd, Crescent City, CA 95531 — (707) 218-5661 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Michael Vancott](https://ctcfinder.com/tester/michael-vancott-crescent-city/)** — Crescent City, CA 95531 — (530) 514-6185 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.