Q: Starts fine then after a minute or so starts to misfire.

asked by on January 28, 2017

Ill start it up fine and it runs like a dream. Then it like flips a switch and starts missing on a cylinder then it just keeps getting worse like more cylinders are missing.

My car has 169000 miles.
My car has an automatic transmission.

Engine is misfiring Inspection $79.99 - $89.99 Get a Quote

Hi there. Check the oil pressure to the fuel injectors and see if the pressure is dropping. The injectors require the oil pressure to make them work and if the pressure is dropping, then the injectors will not fire. If you need further assistance with your engine misfiring, then seek out a professional, such as one from Your Mechanic, to help you.

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

What others are asking

My f150 bogs down to about 400 rpms when I put in reverse or drive and instantly goes back to normal idle

I would recommend having the transmission fluid flushed and replace fluid. The solenoids may need to be replaced if they are sticking.

Brand new clutch installed and on the way home it grinds while shifting into 3rd and it never did that before.

Hello. I share your dismay. When a clutch is replaced it does not implicate any of the internal gearing of the transmission. Although it would seem improbable (because you are not experiencing grinding in gears other than 3rd) you might...

Water pump leak

Hello. A very common concern and almost expected on earlier vehicles, the water pump is generally an easy fix. I will never recommend the use of a stop leak solution on any leak large or small. Leaks need to be...

Transmission cooling hose keeps blowing off of radiator

The retainer clip needs to be replaced. It is not able to secure the line under high temperature and pressures. Get the part from the dealer and have the line checked for any problems, and replace as needed. If the...

my lincoln town car rear suspension is low what do i do

The vehicle height could be low due to an air compressor/control failure, break in an air line, faulty air spring, faulty level control sensor and other causes. These systems are fairly straightforward and thus if you request an air spring...

Non stop jerking when gas pedal is pressed to floor

Hey there, thanks for writing in about your 1999 Ford Escort. You may have to have the vehicle checked for misfires. You could have a bad coil pack putting out weak spark or the fuel pressure is low. It would...

Driving on torn CV boot?

If you have been driving on torn CV boots and now have noise when turning and have driven like that for a while then you should have the axles replaced as soon as possible. You do not have to go...

2003 Hyundai Sonata 2.7 v6. Hello my car randomly bucks / jerks at stop lights in drive and is way worse and constant when the ac is on.

Hi there. It sounds like your engine is misfiring. Check the spark plug and wires to see if they are firing. If the spark plugs are firing, then the fuel pump could have an issue or the injectors could be...

2017 fusion dead battery.

Hello. This is a common issue on this vehicle. Most of the time it is caused by a parasitic drain caused by a programming issue with the integrated control module. This module controls most of the functions of the interior...

Related articles

The Best Used Cars to Buy if You're Hauling a Horse Trailer
Horse Horse owners need a vehicle with towing capacity. Depending on the size of your trailer and the weight of your horse or horses, you probably won’t be able to get away with less than a 3,000-pound towing capacity, and...
A Buyer’s Guide to the 2012 Ford F-450
The The 2012 Ford F-450 is a serious truck with major towing and hauling capacity. What it lacks in gas mileage, it more than makes up for in durability, suspension, power, and torque. Plus, with a six-speed shiftable automatic transmission,...
How to Buy a Good Quality Fuel Pressure Regulator
There There are all kinds of shapes, styles, and capacities of fuel pressure regulators – from fuel-injected applications to carbureted vehicles and diesel-powered and E-85 engines. The fuel pressure regulator works with the fuel injection system in order to send...