Q: Misfire on cylinder 1 causes spark too rich or lean fuel levels

asked by on

P0301 computer detected a misfire on cylinder 1 causes spark too rich or lean fuel levels what does that mean.

My car has 180097 miles.
My car has an automatic transmission.

Hello there, the P0301 Cylinder 1 misfire is a common code on your 2002 Chevrolet Trailblazer. When a misfire code is seen it is telling us that the cylinder is not firing as it is supposed too. This means the engine runs erratically on that one cylinder or not at all. The engine tries to compensate for this cylinder not firing and can cause the engine to run rich, or lean. Common causes of a misfire are spark plugs, wires, coil, fuel pump, fuel injector, vacuum leak, cap and rotor. A qualified technician, such as one from YourMechanic, will be able to determine what is causing your cylinder 1 misfire and perform any repairs required to resolve the issue.

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
  1. Home
  2. Questions
  3. Misfire on cylinder 1 causes spark too rich or lean fuel levels

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: P0301 code, steady misfire.

Hey there. In order to check the cylinder for spark you have to remove the coil and insert a spark tester into the coil after reconnecting it. Then you can check to see if it has spark. The injector will...

Q: My car keeps giving misfire cylinder 5

Hello - when you changed the plug and coil, was there oil in the spark plug recess? If so, the valve cover is leaking oil onto that plug and coil, and should be replaced. The oil can enable a misfire...

Q: When I turn left clunking sound and when steered right a rubbing sound abs and stabilitrak light is on

Hi Adele. Thanks for contacting us today. There are several possible reasons why your warning lights are illuminated, and likely are the source of the noises you're hearing as well. Some of the possible sources include worn tie rod ends,...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.