Skip the auto shop - Our mechanics make house calls

Q: Car not getting enough fuel

asked by on

After getting a tuneup, my car is now misfiring. Also, the engine light is blinking constantly with a code P300. It says that cylinders two and five are not receiving the proper fuel.

P0300 is an engine code for multiple misfires. These are possible causes, vacuum leaks, damaged hoses or improper routing, fuel contamination, ignition system (ignition module, coil, spark plugs and wires,) or a fuel system issue. If there are specific codes that point to specific cylinders, then injectors, plugs, coil packs, spark plug wires can be swapped to good cylinders to see where the misfires move, to eliminate faulty components. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the training and equipment to diagnose these misfire issues.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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. Car not getting enough fuel

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: Ongoing issues with misfires

With the engine light being on, the very first step is to have the vehicle scanned for diagnostic troubleshooting codes. These codes will tell you what system is malfunctioning and steer you in a general direction for inspection. Misfires are...

Q: Cadillac heater issue 2005 Cadillac DeVille

Hi there - I suspect your cabin heating scenario is a problem with the air blend doors in the heater unit itself. The lack of heater function typically has 5 causes: the engine is not getting up to correct temperature...

Q: The car won't start unless it sits for over four hours

Hello there. A few possible faults could cause this type of intermittent no start condition. The most common would be a battery, starter, battery cables, fuel pump, fuel injector, or a wiring issue. This type of failure indicates a fault...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.