article thumbnail

Freeze Frame Diagnostics

Tomorrow's Technician

This standardized many of the onboard emissions protocols and codes and allowed states to perform onboard emissions testing. As time passed, even large trucks and motorcycles adopted this same method to test the emissions status of a vehicle. For technicians, it opened a whole new world of diagnostics.

article thumbnail

Diagnosing Misfires

Tomorrow's Technician

Unfortunately, a misfire also will cause a considerable increase in hydrocarbon (HC) emissions, which can cause a vehicle to fail an emissions test. Then, the crankshaft rotational velocity and acceleration are compared in the event of a power loss from each cylinder. What are you looking for?

Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

Deciphering An Engine Misfire Code

Tomorrow's Technician

Unfortunately, a misfire also will cause a considerable increase in hydrocarbon (HC) emissions, which can cause a vehicle to fail an emissions test. Then, the crankshaft rotational velocity and acceleration are compared in the event of a power loss from each cylinder. What are you looking for?

article thumbnail

Fleet Maintenance in San Antonio: What to Expect + Solutions

RepairSmith

Compliance Checks Skilled technicians will: Perform DOT inspections , emissions testing, and safety checks as required. Data Tracking and Reporting Expert technicians will: Log each service event digitally for accurate recordkeeping. Maintain detailed documentation for audit readiness and regulatory compliance.

article thumbnail

P0442: EVAP System Leak Detected (Small Leak)

RepairSmith

So when the leak detection pump in the exhaust system suspects a small EVAP leak event, it immediately turns the Check Engine Light on. A Failed Emissions Test or Smoke Test One of the main indicators of the P0442 code is a failed emission test or a smoke test.

article thumbnail

What different engine misfire codes mean

Tire Review Magazine

Misfires also significantly increase hydrocarbon emissions, which can cause a vehicle to fail an emissions test. Scan tools can access Mode $06 data when diagnosing misfires, which provides detailed information about the vehicle’s emission-related monitors. In some cases, it might feel like a vibration.

article thumbnail

These Jalopnik Readers Want To Be President Of Car Culture, Here Are Their Campaign Promises

Jalopnik

The events of recent weeks have shown how easy it is for police to get away with everything, and for someone impersonating an officer to literally get away with murder. Plus (minimal) annual national safety and emissions testing. Same rules as rolling coal. And yes, this means you too motorcycles. -

Car 50