Can you pass a smog test with a bad catalytic converter?
Can you pass a smog test with a bad catalytic converter?
Catalytic converter malfunction: The catalytic converter’s job is to turn the hydrocarbons, carbon monoxide and nitrogen oxide released by the engine into carbon dioxide and water. Any problem with this component could lead to smog test failure.
Do you have to smog a 1985 car?
Under the current law, cars 30 years or older are exempt from smog testing. That means that this year a model 1974 car is exempt and next year a model 1975 will become exempt. What’s more, cars newer than 1976 are already passing their smog tests and the emission rules for these vehicles will be frozen in time.
How to pass a smog test with an old catalytic converter?
Instead, I will talk about a simple, no-cost technique on how to pass a smog test if your vehicle has already undergone one and failed because of a bad catalytic converter. Replacing a catalytic converter is expensive. This simple home remedy will avoid having to buy one and won’t cost a penny.
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.
When to use fuel additives before a smog test?
The use of fuel additives can be good and bad: Good if used consistently over many months prior to a smog test, Bad if you use the additives only for a short period before a test. Avoid a smog test on a hot day, or do the test very early in the morning when the temperature is still cool.
How to rack up mileage for a smog test?
If your commute to work is 30 miles per day round trip, then you need to do about 5 days of commuting to rack up the required mileage. Reset your odometer to zero and start monitoring your mileage. Start your 150-mile run. At the end of the mileage run, you are ready for a smog test.
Why does an old catalytic converter fail a smog test?
In most cases, the reason why an old CC fails a smog test is because the smog equipment is calibrated too sensitively. The CC is still good and still does its intended job of blocking pollutants from the vehicle’s exhaust, but unlike a brand new CC, it is no longer sensitive enough to pass a smog test.
How does an air injection system smog pump work?
Air Injection System & Smog Pump. The air injection system (AIS) is designed to introduce clean air to the engine exhaust as it exits the exhaust manifold or exhaust headers. Exhaust gases are at their hottest as they leave the combustion chambers.
Is it possible to bypass a catalytic converter?
A catalytic converter is essential to your vehicle’s emission system; it functions by transforming “raw” exhaust into less environmentally damaging gases. There are few instances in which it is allowable to remove the catalytic converter and install a bypass pipe.
When did they start using catalytic converters in cars?
A few other general facts: Catalytic converters were introduced into the auto industry for the 1975 model year. From 1975 on, catalytic converters were used on ALMOST all light duty emission standard vehicles (all states) but were not used on any heavy duty emission standard vehicles.
