---
title: "Ace Diesel Service — Clean Truck Check, Bell Gardens, CA"
description: "Ace Diesel Service in Bell Gardens, CA is on CARB's Clean Truck Check tester list. Offers OBD testing, smoke opacity (non-OBD) testing. Phone, address and…"
url: "https://ctcfinder.com/tester/ace-diesel-service-bell-gardens/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Ace Diesel Service

Clean Truck Check tester in Bell Gardens, CA (Los Angeles 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 | 8450 Garfield Ave, Bell Gardens, CA 90201 |
| County | Los Angeles County |
| Phone | (562) 307-2941 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Ace Diesel Service 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 | Not listed |

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Cox Automotive Dickinson Fleet in Bell, about 1 mile away. [See listing](https://ctcfinder.com/tester/cox-automotive-dickinson-fleet-bell/).

## Clean Truck Check testers in Los Angeles County

Ace Diesel Service is one of 516 testing businesses in Los Angeles County on CARB's public tester list. 465 of them offer mobile testing and 190 do smoke opacity tests. In Bell Gardens itself there are 5 listed businesses, 3 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 Ace Diesel Service 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 [Cox Automotive Dickinson Fleet](https://ctcfinder.com/tester/cox-automotive-dickinson-fleet-bell/) (about 1 mile).

### Can Ace Diesel Service test a 2012 or older diesel truck?

Yes. Ace Diesel Service 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 Ace Diesel Service charge for a Clean Truck Check?

Ace Diesel Service has not published prices with us; call (562) 307-2941 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 Ace Diesel Service a CARB-credentialed tester?

Ace Diesel Service 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

- **[Cox Automotive Dickinson Fleet](https://ctcfinder.com/tester/cox-automotive-dickinson-fleet-bell/)** — Bell, CA 90201 — (463) 231-7162 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Ace Diesel](https://ctcfinder.com/tester/ace-diesel-bell-gardens/)** — 8450 Garfield Ave, Bell Gardens, CA 90201 — (562) 307-2944 — 1 mi. Services: OBD testing.
- **[Alex's Auto Smog](https://ctcfinder.com/tester/alexs-auto-smog-bell-gardens/)** — 6301 Florence Ave, Bell Gardens, CA 90201 — (323) 250-2539 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[H and R Mobile truck repair](https://ctcfinder.com/tester/h-and-r-mobile-truck-repair-bell-gardens/)** — 6319 Gifford Ave, Bell Gardens, CA 90201 — (562) 523-5752 — 1 mi. Services: mobile testing, OBD testing.
- **[Josue Lucero](https://ctcfinder.com/tester/josue-lucero-bell-gardens/)** — Bell Gardens, CA 90201 — (323) 453-2944 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Tonys Clean Truck Test](https://ctcfinder.com/tester/tonys-clean-truck-test-maywood/)** — 6118 Woodlawn Ave, Maywood, CA 90270 — (323) 501-3778 — 2 mi. Services: mobile testing, OBD testing, motorhome testing.