---
title: "Kristy Bui — Clean Truck Check, Manteca, CA | CTC Finder"
description: "Kristy Bui in Manteca, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing. Phone, address and…"
url: "https://ctcfinder.com/tester/kristy-bui-manteca/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Kristy Bui

Clean Truck Check tester in Manteca, CA (San Joaquin 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 | Manteca, CA 95337 |
| County | San Joaquin County |
| Phone | (510) 935-6600 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Kristy Bui 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 |

## Clean Truck Check testers in San Joaquin County

Kristy Bui is one of 124 testing businesses in San Joaquin County on CARB's public tester list. 111 of them offer mobile testing and 53 do smoke opacity tests. In Manteca itself there are 19 listed businesses, 17 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 Kristy Bui offer mobile Clean Truck Check testing?

Yes. Kristy Bui 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 Kristy Bui test a 2012 or older diesel truck?

Yes. Kristy Bui 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 Kristy Bui charge for a Clean Truck Check?

Kristy Bui has not published prices with us; call (510) 935-6600 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 Kristy Bui a CARB-credentialed tester?

Kristy Bui 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

- **[Apple Xpress](https://ctcfinder.com/tester/apple-xpress-manteca/)** — Manteca, CA 95337 — (209) 629-9196 — 1 mi. Services: mobile testing, OBD testing.
- **[Baaz truck and trailer repair](https://ctcfinder.com/tester/baaz-truck-and-trailer-repair-manteca/)** — 1698 Chateau Ln, Manteca, CA 95337 — (510) 363-6007 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[CARB Quick Check](https://ctcfinder.com/tester/carb-quick-check-manteca/)** — 3563 Levanto Way, Manteca, CA 95337 — (510) 786-8378 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Diego Casillas](https://ctcfinder.com/tester/diego-casillas-manteca/)** — Manteca, CA 95337 — (209) 699-0461 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Imperial Truck Repair](https://ctcfinder.com/tester/imperial-truck-repair-manteca/)** — 2142 W Yosemite Ave, Manteca, CA 95337 — (209) 456-2383 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing.
- **[Nguyen Nguyen](https://ctcfinder.com/tester/nguyen-nguyen-manteca/)** — Manteca, CA 95337 — (408) 874-5500 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.