Q: Duel exhaust on 98 f150 shakes when idling . Every so often get a fuel smell in cab

asked by on January 28, 2018

I have 98 f150 with dual exhaust it idles a little rough exhaust pipes and muffler shake it stalls in reverse sometimes

My car has 210533 miles.
My car has an automatic transmission.

The engine is not running well and combustion is not complete hence the fuel odor. However, fuel odors can also be caused by leaks and so that possibility should be considered, too. Rough operation could be due to a bad tank of gasoline, dirty fuel injectors (at the mileage you report, the injectors should be removed from the fuel rail for professional off car cleaning, and internal filter replacement, and that step alone may resolve your issue), incorrect idle speed, exhaust restrictions, vacuum leaks, incorrectly installed or damaged spark plugs, a defective or clogged fuel pump or fuel filter, failing electrical components such as the ignition control module, plug wires, coils, and spark plugs, a defective airflow sensor, dirty oxygen sensors and other causes. I would recommend that you request a rough operation/rough idle diagnostic and the responding certified mechanic will perform the required diagnostic steps to get this resolved. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
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

My steering wheel locked up or got stiff and the battery light came on and oil light came on but battery is fine and oil is there

Depending on whether your truck came with electric power steering or hydraulic power steering, this could have been caused by failing power steering whether it be hydraulic or electric. To provide steering assistance in an electronic power steering system, an...

Can I put E85 in my truck?

The last owner may have used an aftermarket computer programmer to alter the computer to only use regular fuel and not E85. If your gas cap says your truck is E85, it should be okay and you could try running...

changed out a dead battery on a 2013 Ford fiesta, got the wrench light warning now it won't change out of second gear

Hi Gary. Thanks for contacting us today. Usually, a damaged transmission position sensor will cause the symptoms you're describing, but it's very odd for a battery replacement to activate this problem. It's possible that this issue is non-related. The wrench...

Related articles

The Best Used Cars to Buy If You're an Uber or Lyft Driver
Are Are you thinking of becoming a driver for Uber or Lyft? That could be an exciting career change – you’ll get to meet a lot of interesting people, and if you love to drive, what better way to spend...
The Best Used Cars to Buy If You're a Carpenter
If If you're a carpenter, and working for someone else, the best used car is whatever you like that gets you to work on time and holds your tools – in short, practically any used car will do. If you...
The Best Used Cars to Buy If You're a Skier
When When summer ends, skiers start thinking about hitting the hills, and that means having to contend with winter driving conditions. Not just any vehicle is going to get the job done. We have evaluated several used ski-worthy vehicles, and...