Skip the auto shop - Our mechanics make house calls

Q: Loss of power

asked by on

driving down the road at 65 mph and all of a sudden lost power and put a lot of black smoke out the exhaust and barely could do 25 mph spark plugs on the right side are black like their not firing ones on the left all look good
My car has an automatic transmission.

Hello. From my experience with this truck this is usually caused by a wiring issue on that side of the engine. If the ground loses connection then one side of the engine will begin to misfire and this will occur. I usually check the grounds and all of the connections first. If they are fine then the issue may actually be the computer.

Further testing with a voltage meter and a scan tool would be needed to make for sure. If you want to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the loss of power firsthand for an accurate repair.

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: Engine won't fire

Hello. I suggest that you recheck the fuse that was replaced and ensure that it was the right fuse for the horn. You may have mistakenly pulled a more mandatory fuse and replaced it with the wrong one which is...

Q: Spark plug popping out

Hello. This is a common problem on the Ford modular V8. The new spark plug won't stay because the threads are stripped out. There are two repairs: 1) drilling, and installing a threaded insert into the head for the spark...

Q: Light and then no power

I can think of a couple of possible causes. The first think I would recommend is having the alternator checked to make sure that the battery is being charged. If the alternator is not charging the battery, the vehicle will...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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...