Skip the auto shop - Our mechanics make house calls

Q: lack of power

asked by on

my truck has no power and has a sputtering sound , like a misfire but i had put new spark plugs and wires , the rotor and cap is still good but my truck is running horrible

My car has 223000 miles.
My car has an automatic transmission.

A: If you replaced the fuel filter, it would h...

If you replaced the fuel filter, it would help to know what the spark plugs look like when they were removed.

If you engine is running good at idle, but starts running bad if you try to accelerate, then you may have a blocked exhaust catalyst. Check to see if you can accelerate the engine when the truck is not moving. If there are no problems there, see if the issue occurs only when you put a load on by putting it into gear. If the problem occurs here, then you most likely have a blocked catalyst. A full diagnosis of your sputtering issue will be needed to see if this is the cause by checking for a misfiring plug or injector. From there, any necessary repairs can be made to help resolve this issue.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My brake lights quit working and I can't find the fuse for them. It's NOT in the under the hood fusebox.

The stop lamp fuse is in the left kick panel inside the vehicle. It is a 15amp fuse that powers the stop light switch on the brake pedal. The brake light switch sends power to rear brake lights.

Q: Truck tugs during acceleration when letting off the brake pedal

What you'd want to do is jack the car up when it acts up like this. Check the wheels and see if they are sticking. If they are sticking, fix that first. If the back ones are sticking, you'll need...

Q: Stalling at cold start, runs fine when warm

Diesels are in fact notorious for being cold blooded by nature and can be even worse on cold starts. This is mainly due to the manner in which diesel fuel is ignited vs regular gasoline. Diesel fuel has a much...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.