Skip the auto shop - Our mechanics make house calls

Q: Truck not passing emissions test

asked by on

My truck did not pass an emissions test, and a full tuneup was recommended. It's a V6.

For a vehicle that is over twenty years old, a full tuneup could mean a lot of maintenance, from plug, wires, filters and injectors, to major components, in order to fix the emission failure. These engines have a problem with the injection system that can cause the system to run too rich, or too lean. I recommend having a mechanic, such as one from YourMechanic, run a thorough diagnostic check to see what the engine would need to pass the test, and put together a repair list.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: What does the malfunction indicator Warning Light mean?

The malfunction indicator Warning Light is located on the instrument panel. When this light illuminates and blinks, then the vehicle has detected that the engine is misfiring. When the light illuminates and is steady, then there is an issue with...

Q: Difficulty shifting into first gear

It is possible that the clutch itself may have been worn down to the point where it can no longer engage the correct gear. Clutches are made of the same material as brake pads and can wear down over time....

Q: 1993 Chevrolet S10 Blazer will not shift into 3rd and 4th gears

There are a few years of this model Chevy Blazer that had some transmission issues much like what you are describing. I would recommend having the vehicle hooked up to an OBD-2 scanner to check the transmission trouble codes that it...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...