How to troubleshoot a Honda Civic fuel injector?

START HERE: Troubleshooting A Bad Fuel Injector. TEST 1: Find the Dead Cylinder First. TEST 2: Measuring The Fuel Injector’s Resistance. TEST 3: Swapping The Fuel Injector. Fuel Injector Troubleshooting Guide. More 1.6L Honda Civic Tutorials. 1996-1998 Fuel Injector Circuit Diagram (1.6L Honda Civic).

What causes no power to fuel injector pulse?

Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line Question: What causes no power to fuel injectors?

When do you test the fuel injector pulse?

This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over. Most of the time this test is done when the engine is cranking over but not starting .

How to check fuel injector pulse using a Noid light?

This is a awesome test because it can be done very fast using a very inexpensive tool called a Noid light. This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over. Most of the time this test is done when the engine is cranking over but not starting.

Why is there no pulse on fuel injector?

If still no injector pulse, then the computer is not pulsing the injectors open for some reason and more testing will be needed. 4) Again, you want the Noid light to blink consistently when cranking the engine over. This is a good signal.

How does the engine control unit control the injector pulse?

Question: What controls the fuel injector pulse? Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line

What causes fuel injector to stop injecting fuel?

Here are the most common types of fuel injector failures: Fuel injector has fried internally and has stopped injecting fuel. Fuel injector is clogged. Fuel injector stuck On all of the time (as soon as the key is turned On). This is usually due to a bad fuel injection computer.

How do you swap out a fuel injector?

Swap the fuel injector with another on the fuel rail (if applicable). Depending on the test result you get in TEST 2, you’ll swap out the fuel injector, of the dead cylinder, with its neighbor on the fuel injector rail. TEST 3: Swapping The Fuel Injector. NOTE: You modify the above tests to suit your particular diagnostic needs.

What does it mean when there is no injector pulse?

In case of that, there is no injector pulse or spark, this means that is your ECU has failed in operating in this case you have to get your ECU changed or visit an expert. You May Like: Low Fuel Light Comes on When Tank Is Full Causes and How to solve it Question: What controls the fuel injector pulse?

What causes a Honda Civic fuel injector to go bad?

There are two main ways that your injectors can go bad. The first is for them to become clogged, dirty, or unresponsive. When this happens not enough fuel enters into your Civic’s combustion chamber. The other way is if the injectors are leaking.

Why is my throttle body injection not working?

When this automotive part is not working correctly, or its electronic sensors begin firing off readings to the onboard diagnostic computer showing problems, it can create car problems.

What happens when fuel injectors don’t work?

Less Fuel Mileage – Your Civic’s engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren’t working properly it can’t do that and fuel mileage suffers. Knock/Detonation – Detonation can cause your Civic’s engine to blow.

What to use to clean throttle body injection?

Spray carb cleaner or similar solvent to breakdown the carbon deposits inside the throttle body and flap. Scrub the part with the plastic brush to avoid scratching the sensitive flap. Scrub until thoroughly clean.

How to test the resistance of a fuel injector?

TEST 1: Find the Dead Cylinder First. Resistance test the fuel injectors . After finding the ‘dead’ cylinder, the next step is to measure the resistance of the fuel injectors with a multimeter and then interpreting the test results. TEST 2: Measuring The Fuel Injector’s Resistance.

How does the fuel system work in a Honda Civic?

The fuel system in your Honda Accord and Civic consists of many working parts. Each part is designed to work in sync with your car’s entire fuel system to deliver optimum fuel flow to the engine, and sustain the normal operation of your vehicle’s idling, acceleration, and speed.

Is the PGM-FI relay on a Honda Civic?

Due to the fact that the PGM-FI Main Relay is a critical component of the fuel injection system of your 1.6L Honda Civic, avoid buying a cheap knock-off brand-X relay. The following links will help you comparison shop for the Standard Motor Products and the original Honda Mitsuba relay:

Where does the power come from on a Honda Civic?

The wire that connects to female terminal no. 1 is the white with black stripe ( WHT/BLK) wire of the connector. Terminal no. 1 gets power from fuse no. 44 of the under-hood fuse and relay box. We’ll use a multimeter to make sure that it’s getting 10 to 12 Volts DC at all times.

Where is the battery negative terminal on Honda main relay?

Consult your owner’s manual or vehicle repair manual and remove the main relay. Attach the battery positive terminal to the No. 4 terminal and the battery negative terminal to the No. 8 terminal of the main relay.

What does the main relay on a Honda do?

The main relay in a vehicle controls the fuel pump and supplies power to the injectors. Knowing how to test a Honda main relay can help you better pinpoint the cause when an electrical issue arises. There’s a pretty simple way to tell if your main relay is affected. Simply turn on the vehicle and see if it continues to run.

Why do I need to Reset my ECU on my Honda Civic?

After you install aftermarket parts, resetting the ECU will help your car’s computer “learn” and accommodate the new parts. Sometimes a faulty check engine light may appear, so resetting the ECU can make it go away. If any of these problems are affecting your Civic or Accord, it is very simple to reset the ECU.

Where is the fuse box on a Honda Civic?

If any of these problems are affecting your Civic or Accord, it is very simple to reset the ECU. Keep reading and this how to will guide you through the process. Open the hood and look for the fuse box, which is located near the passenger’s side.

Where does coolant leak in 1997 Honda Civic?

In 1997 Civics with the 1.6 liter engine, coolant leaks are most likely to occur where the hoses connect to the engine, but it can also leak from the reservoir or from the hoses. When fixing antifreeze leaks, it is important to check the condition of the hoses – they wear out over time and small cracks are only going to get bigger.

Can a Honda Civic del Sol have two misfiring cylinders?

Since the engine in your 1.6L Honda Civic (Civic del Sol) has only 4 cylinders, having just one ‘dead’ cylinder will wreak havoc with the engine’s idle and performance. If the engine has two misfiring cylinders, it’s not gonna’ start and run.

What causes a blown head gasket on a Honda Civic?

The most common cause of a blown head gasket is that the engine overheated due to one of the following: 1) The radiator fan not working, 2) Engine has No Coolant, due to a leak somewhere in the cooling system 3) Thermostat went BAD and is stuck closed. The most common symptoms a blown head gasket are:

How much does it cost to get gas out of a Honda Civic?

Honda Civic Fuel is leaking from gas tank Inspection costs $89 on average. Over time, a gas tank may begin to corrode and fail. When this happens, gas may leak from the vehicle, having an effect on fuel economy, and potentially leading to a dangerous fire or explosion.

What should I do if my Honda Civic won’t start?

The check engine light will likely appear if your car won’t start. If the engine won’t turn over, or if there’s no sound from the starter when turning the key, the battery is likely dead. The easy way to test the car battery is with a multimeter. Connect the multimeter to the positive and negative battery terminials.

Where is the relay on a Honda Civic?

Trouble shooting the fuel pump starts with the relay. It’s located under the dash in the driver’s footwell on the left hand side. Disconnect the main relay connector and jump the Black/Yellow #5 wire to the Yellow/Green #7 wire. The fuel pump should come on and whirr like it normally does.

What does misfire code mean on Honda Civic?

Misfire (hesitation) under load (which means: when you step on the accelerator pedal). Lack of power when accelerating your Honda. Bad gas mileage. Misfire codes (P0300, P0301, P0302, P0303, P0304) lighting up the check engine light (CEL).

What causes bad fuel economy in a Honda?

Poor fuel economy can be exacerbated by a loose gas cap, clogged fuel filters and fuel lines, or clogged injectors. Check for trouble codes in your car to diagnose a faulty fuel system.

Can a 1999 Honda Civic start while driving?

i have a 1999 honda civic ex which has 165,000 miles. Within the last few months the car will shutoff while driving. i have no power steering, nothing. i have to pull the car to side of the road and put the car in nuetral to start. Sometimes it will start right away and other times it will take about 5 to 10 turns of the ignition.

Can a Honda Civic shut off while driving?

Within the last few months the car will shutoff while driving. i have no power steering, nothing. i have to pull the car to side of the road and put the car in nuetral to start. Sometimes it will start right away and other times it will take about 5 to 10 turns of the ignition.

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