• Schearer’s Sales & Service, Inc
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  • Mon – Thurs: 7:30 AM – 6:00 PM
  • 5530 Crackersport Rd
    Allentown, PA 18104
  • Call Schearer's Sales & Service (610) 395-2514

    5530 Crackersport Rd
    Allentown, PA 18104
    Follow Us on: Google

Jaguar Engine Misfire

What Leads to Jaguar Engine Misfires?

by schearerswpadmin October 4, 2020

A Jaguar’s engine requires an exact air-to-fuel ratio to run properly. When everything is working right, the air-to-fuel mixture is ignited and provides power to propel your Jaguar on the road. If ignited prematurely or too late, your engine will misfire. This misfire often results in a loud bang. Let’s take a closer look at what happens during engine misfires and give you a bit of advice on how to repair and where to go for help when your Jaguar needs service.

Symptoms of a Misfiring Engine

There are several different symptoms that may occur when your engine experiences a misfire, some are severe but others are more of an annoyance. Regardless, you should always pay attention to odd or unusual symptoms your car is experiencing, because they can lead to worsening issues:

  • slow acceleration
  • rough idle
  • engine stumble
  • jerking during acceleration
  • vibrations
  • sound of the engine changes
  • check engine light
  • stalling
  • loud popping sound
  • heavy gas smell

What Causes Engine Misfiring in a Jaguar

Depending on the problem, fixing it can be easy or complicated. Determining the cause of the misfire can be difficult to do without the proper equipment. At Schearer’s Sales & Service, our expert technicians can run a diagnostic check. They will determine what needs to be done to solve the problem. The most common causes of engine misfires are:

  • Bad Ignition Coil: The most common reason for engine misfires in a Jaguar is a bad ignition coil. In Jaguars, spark plug cables have a tendency to malfunction or over-function. This produces an extremely high temperature that damages the wires. In return, this causes the ignition coil to fail.
  • Low Fuel Pressure: A clogged fuel filter or defective fuel pump can lead to low fuel pressure. When you have low fuel pressure, your Jaguar’s engine will receive too much air resulting in misfires.
  • Bad Spark Plug: A bad spark plug is the second most common cause of misfires. Spark plugs wear out over time and need to be replaced.
  • Intake Manifold Gasket: The worn-out intake manifold gasket can cause a vacuum leak. A leak leads to an improper fuel to air ratio. This can lead to misfires, stalling, reduced fuel economy and a decrease of power.
  • Mechanical Issues: Mechanical issues can also cause misfires, such as leaking vacuum lines or a slipped timing belt or chain. If the misfires are from mechanical issues, you may notice a persistent thumping.
  • Transmission Problems: Misfires aren’t always produced at the engine. Your transmission could be the problem. If you experience jerking as your Jaguar misfires, the transmission may not be shifting properly.

Driving your Jaguar with Engine Misfires

Misfiring isn’t typically dangerous, but you can lose power. If you continue to drive your Jaguar, your engine can be permanently damaged. Misfires also reduce fuel efficiency, decrease power, and increase emissions.

Fixing Engine Misfiring in a Jaguar

There are many issues that can lead to a misfire in your Jaguar. Some issues can be easily diagnosed and others are harder to decipher. Our ASE-certified, factory-trained technicians will make sure that your car is fixed right the first time.

Jaguar Ignition Coil Replacement

We always go the extra mile to make sure you get the best possible service. Our technicians are detail-oriented and find issues that others miss. You don’t have to take your car to a dealership for service. We can provide better service faster and at a cheaper rate.

Book Your Appointment Today

When you choose Schearer’s Sales & Service as your service center, you are hiring the best. You will receive high-quality professional service. Our staff will make your experience quick and painless.

If your Jaguar is experiencing engine misfiring, call to schedule your appointment today. Continuing to drive your car can lead to engine damage. If you are located in the Allentown, Bethlehem, and Macungie, PA areas, you can come visit us at 5530 Crackersport Rd Allentown, PA 18104. You can also reach us on (610) 395-2514. We are here to help you with all your Jaguar service needs.

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