Do you need a smog test for a diesel truck?

Do you need a smog test for a diesel truck?

These include Test Only and State Referee inspections. Diesel Smog Test Exemption: The DMV does not require a California emission inspection (smog check) for the following types of vehicles: Any diesel car or diesel pickup truck which is 1997 model year or older. Any diesel truck which weights over 14,000 GVWR.

What was the emissions limit for a Chevy truck in 1979?

For 1979 through the current day, the dividing line between light and heavy duty emissions was raised from 6,000 lbs GVWR to 8,500 lbs GVWR, forcing more trucks to comply with the stricter emissions standards than previously.

What happens if you fail a smog test in California?

Diesel cars and trucks which fail the diesel smog test will have to get their vehicles repaired at a diesel vehicle repair shop before retesting. Diesel smog inspections are required during a diesel vehicle’s initial registration in California and once, every two years, thereafter.

What kind of engine did GMC pickups have in 1987?

Only a few 30/35 series chassis cab models offered carbureted 292, 350 and 454 engines, and those were the only models that did not use catalytic converters for 1987 on. Note: The above applies only to U.S. vehicles.

For 1979 through the current day, the dividing line between light and heavy duty emissions was raised from 6,000 lbs GVWR to 8,500 lbs GVWR, forcing more trucks to comply with the stricter emissions standards than previously.

How to complete a drive cycle and pass emissions and smog test?

1. Ensure that the fuel tank is between 1/4 and 3/4 full 2. Start cold (below 86 F/ 30 C) and warm up until engine coolant temperature is at least 160 F (typically one to three minutes). 3. Accelerate to 40-55 MPH at 25% throttle and maintain speed for five minutes. (Coolant must reach 190 F or more). 4.

What are the emission standards for a 1973 GMC pickup?

For 1973 to 1978 all passenger cars and light trucks under 6,000 lbs GVWR must meet stringent light duty emission standards. All trucks heavier than 6,000 lbs GVWR must comply with heavy duty emission standards, which are much more lenient.

Only a few 30/35 series chassis cab models offered carbureted 292, 350 and 454 engines, and those were the only models that did not use catalytic converters for 1987 on. Note: The above applies only to U.S. vehicles.