Honda Civics are often built with the best technology and mechanical components on the market. However, old models could encounter fuel systems problems. Fuel injectors and pumps are an essential part of the process, so any errors need to be corrected as soon as possible to preserve the car’s longevity.
If your Honda Civic fuel injectors or pump are not working, it could be due to a lack of voltage, malfunctioning sensors, or low fuel. Other common causes include old spark plugs, improper cylinder compression, or there’s not enough power from the battery. Check the engine light manual, if possible.
Throughout this article, you’ll also learn the following details about why your Honda Civic’s fuel injectors and fuel pump are experiencing issues:
- Common explanations if they’re not firing or spraying
- Why your vehicle isn’t getting enough fuel from the pump
- Solutions to each problem listed on the page
Honda Civic Fuel Injectors Not Firing
Fuel injectors move fuel through the system from the fuel pump to the cylinders. In most cases, there’s one injector per cylinder. For example, if you’re driving a four-cylinder Honda Civic, there are four fuel injectors. If one of them isn’t working correctly, there’s a 25% discrepancy that can negatively impact the engine.
Here’s a list of reasons your Civic’s fuel injectors might not be firing:
- Damaged or broken spark plugs could cause the issue. Spark plugs supply power to various components of the vehicle. Without them, your Civic wouldn’t function properly. They’re relatively cheap, but these small components are crucial to the continued operation of the fuel injectors.
- Clogged fuel filters could limit the fuel going through the injectors, causing them not to work. If there’s not enough fuel and oxygen in the mix, you might have one or more injectors working improperly (or not working at all). A clog can be repaired or replaced to fix the problem.
- If there’s not enough fuel in your vehicle, the injectors won’t fire. They need fuel to run. If your gas meter shows you’re above empty, but it’s not supplying fuel, the meter might be broken. Keep track of how long a tank lasts you. If it’s well beyond the usual timetable, the meter is likely broken.
- A bad cylinder compression is another cause of malfunctioning fuel injectors. If the cylinders aren’t compressing enough, they’ll deliver an improper mixture of fuel and oxygen. A bad compression won’t use the fuel injectors, causing them to not fire.
Honda Civic No Start Has Spark and Fuel
Fuel injectors can last up to 80,000 miles. If your injectors are outside of the predicted range, they’re likely too old to function. Corrosion ruins them, rendering them useless or less effective. Make sure you follow the manufacturer’s manual for exact replacement times.
While fuel and spark plugs are often the source of the problem, there are a few other issues to investigate. For example, there might not be enough power going to the fuel injectors. They need enough voltage (12 volts, in most cases) to pull and push fuel. Use a multimeter to check the voltage. You can also use it to test the spark plugs and battery terminals for the same reasons.
Another issue could be an error within the wiring. There’s a harness that connects the fuel injectors to the plugs. If there’s a disruption caused by tears, bent wires, or loose connections, your fuel injectors won’t work properly. Your Honda Civic might experience infrequent misfires until it becomes damaged beyond repair.
Honda Civic Not Getting Fuel
Honda Civics work like most cars. Here’s the process:
- The fuel pump pulls the fuel from the tank.
- It pushes fuel through the fuel filter and into the fuel injectors.
- The injectors spray fuel into the cylinders that compress and combine with oxygen to create controlled explosions.
- The process leads to power, which you control with the pedal to accelerate.
As you can see, an interruption would ruin the whole sequence. If your Civic isn’t getting enough fuel, there are typically four problems:
- There’s not enough fuel in the tank (or the sensor is off, claiming there is while there actually isn’t any fuel).
- The fuel pump is malfunctioning.
- The fuel filter is clogged, broken, damaged, or misplaced.
- Its fuel injectors aren’t working correctly.
Other issues include cylinder compression errors and improper wiring. In most cases, the vast majority of problems stem from the four points mentioned above.
Honda Civic Fuel Injector Problems
Honda Civics are built with durable fuel tanks, pumps, filters, and injectors. However, they’re not immune, just like any car company on the market. Common fuel injector problems include:
- One or more fuel injectors won’t spray. This issue causes cylinders to compress without enough fuel, leading to misfiring, slow acceleration, and more. It can also cause overheating if left unattended for too long.
- There’s an improper fuel and oxygen ratio. If there’s a fuel filter clog, the Civic’s fuel injectors won’t spray the correct combination. When this happens, it can cause overheating, coagulation, and misfires.
- Old fuel injectors need to be replaced. Sometimes, they’ve gone through too much wear and tear. Slamming the acceleration every time you get on the highway can cause this, but it’s inevitable with any vehicle’s engine after thousands of miles of operation.
Honda Civic Fuel Injector Won’t Start
In most cases, a Honda Civic’s fuel injector won’t start because it’s not getting enough fuel. This issue is often a result of a clogged filter, not enough fuel in the gas tank, or a malfunctioning fuel pump. Any of these three problems will limit the fuel going into the injectors, causing them not to have a purpose.
However, your fuel injectors might not start because the wiring harness or spark plugs aren’t working. Check the Civic’s user’s manual to locate the corresponding spark plug, then test it with a multimeter. If you’re getting enough power, test the voltage at the harness. If there’s enough power, test your car’s battery.
Clogs and broken sensors are also worth investigating. Most mechanics recommend starting with the cheapest replacements before you dive into expensive repairs. Spark plugs, batteries, and filters aren’t too pricey. You might have to spend more to replace the injectors, pump, tank, or wiring harness.
What Can Cause Fuel Injectors Not To Spray?
Most of the reasons fuel injectors don’t work are listed above. If they’re not spraying, they probably don’t have enough power or fuel. Check for 12V at the plugs, battery, and wiring harness. Ensure the spark plugs and wiring harness are secure. Loose connections can limit or prevent the injector’s effectiveness.
If your Honda’s fuel injectors aren’t spraying, they won’t supply fuel to the cylinder. Failure to replace or repair the injectors can lead to a damaged cylinder sits it’ll run dry. The longer you wait, the more expensive the repair will get. If you hear misfiring, jerking while accelerating, or the car won’t move at all, locate the problem immediately.
The copyright owner of this article is Knowmyauto.com and was first published on Feb 10, 2021..
Honda Civic Bad Fuel Pump Symptoms
Fuel pump issues are very easy to spot. They include the following list:
- Sputtering or putting to a stop while you’re driving.
- When you’re driving at high speed or carrying a lot of weight in the car, it’ll stop or slow down drastically.
- Your car’s fuel efficiency will drop.
- The engine might get hotter since there’s not a proper fuel to oxygen ratio.
- The Civic could accelerate and decelerate randomly based on the fuel pump’s distribution.
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KnowMyAuto is the sole owner of this article was published on Feb 10, 2021 and last updated on .