Skip the auto shop - Our mechanics make house calls

Q: Engine problems.

asked by on

I replaced the spark plugs, spark plug wires, distributor cap and rotor. I can feel that it has all the power it needs but it doesn't want to give it. If I get on the throttle to much it back fires continually. It also has a rich fuel mixture. I just can't figure it out.
My car has an automatic transmission.

A: From what you describe it would appear li...

Hello.

From what you describe it would appear likely that the backfiring and performance issues are a result of the fuel problem. A rich fuel mixture can be caused by a wide variety of issues. A few things I would look into are the fuel pressure regulator, the fuel pump, and the injectors. If the Check Engine Light is on, I would also retrieve the trouble codes, as a sensor issue can also cause the engine to run rich. As engine performance issues can sometimes be difficult to diagnose, I would recommend having the vehicle diagnosed by a professional technician, such as one from YourMechanic, to diagnose the loss of power with your car.

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: My car is vibrating and shaking; is this related to the brakes and rotors?

What you're describing may be a sign of warped brake rotors. As you may know, when you press on your brake pedal, this activates a hydraulic pressure that forces small pistons inside your brake calipers to push the brake pads...

Q: Engine swap!

The main problem in such a swap is the engine computers for the two engines you are referring to are not interchangeable. And, you cannot flash re-program your existing computer to work with the new engine because the two use...

Q: Engine keeps misfiring on humid days

The humidity in the air will also affect the air pressure around your vehicle. When air pressure is affected, engine vacuum is also affected. The engine's positive crankcase ventilation system relies on engine vacuum to function properly. If the engine...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...