Q: Can't get power at all. Misfire with code P0303.
Can't get power at all.. misfire p0303
My car has 65000 miles.
My car has an automatic transmission.
Recommended Services
| Engine is misfiring Inspection | $94.99 - $114.99 | Get a Quote |
Hi there. The code P0303 means that cylinder number 3 has a misfire. There are three ways that the cylinder number 3 can be misfiring.
- Spark plug is fouled out and not creating a strong enough spark to ignite the fuel
- Fuel injector is clogged or has stopped working and not spraying any fuel
- A burned valve, burned piston rings, or a hole in the piston that will cause the cylinder temperature to drop causing the fuel to not burn
Check the spark plug on the cylinder number 3 and see if there is a suffucient amount of spark. If the spark is there and is strong, then check the fuel injector and see if it’s spraying or not by unplugging the injector as the engine is running. If the engine try’s to stumble more, then the fuel injector is working. If there is no change, then the fuel injector is not working. If the spark plug and fuel injector is working, then there could be internal damaged to the cylinder. 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
What does the Passenger Air Bag Off Light mean?
If the passenger sensing system detects that there’s no one sitting in the passenger front seat or if several other conditions are met, the Passenger Air Bag Off Light will turn on in the dash. It’s important that you know...
Electric front seat not moving forward
Electric seats run on a track with motors that adjust it in the direction you choose. The gears in the motors are sometimes made of plastic. Under normal situations the plastic gears hold up fine, but if there is an...
A wrench-shaped warning light showed up on my car
You may want to have faults read out of the powertrain control module. The wrench light generally means a transmission fault. If it does not come back it may not be a cause for alarm. However, if it lights up...
Engine problems.
Hello. From what you describe it would appear likely that the backfiring and performance issues are a result of the fuel problem. A rich fuel mixture can be caused by a wide variety of issues. A few things I would...
How do I deactivate an anti-theft system?
This model uses the GM Pass Key security system, which includes an "electronic" key with a raised contact and a lock tumbler with a sensor that detects the electronic key. Either the key or the sensor in the tumbler has...
My car won't start I just got a new starter , when I try to start my car it make a click sound nothing else.
Hi there. It sounds like a weak battery, however there are other possibilities that can create the same symptom. Has the battery been tested? Have it tested with a digital volt/ohm tester that provides current voltage, cold cranking amps, and...
Original gearbox but Engine swapped for a Golf 3 1.9. Is this causing a lack of power? 1988 VW Vanagon
Hello - once the turbocharger system is repaired, and the swapped engine is producing the power it is capable of, I would expect you will be pleasantly surprised at how well the Vanagon performs - as long as the swapped...
2005 Chrysler 300c has a code P0406. I believe EGR needs replacing, Don't know if it will make it 25 miles to dealer.
P0406 (https://www.yourmechanic.com/article/p0406-obd-ii-trouble-code-exhaust-gas-recirculation-sensor-a-circuit-high-by-spencer-clayton) involves the EGR system but that may or may not be the only factor causing your rough running condition. Typically, P0406 will set if you have a failed EGR valve, excessive carbon buildup, an open or short in...
2012 chrysler 200s 3.6l overheats when a/c is on and it pressurizes and be lows it out the overflow relief hose
Hi There, Overheating with the AC on is generally caused by a couple of possibilities. When the AC compressor (https://www.yourmechanic.com/services/ac-compressor-replacement) is beginning to fail, this may incur an increased load on the motor as it works harder than usual to...
Related articles
A Buyer's Guide to the 2012 Volkswagen CC
At At some point, most of us have to choose between the cars we wanted when were kids and the ones we need for our commute to the office or to pick up our own children. With the 2012 Volkswagen...
The Best Used Cars to Buy If You Need to Haul a Motocross Bike
Of Of course you would love to be able to ride your motocross bike everywhere, but the reality is, at some point you're going to need to transport it. A cargo van of almost any make or model would be...
Symptoms of a Bad or Failing Ignition Coil
Common signs include the Check Engine Light coming on, engine misfiring, rough idle, a reduction in power, and the car not starting.
Browse other content
Maintenance
Cities
Services