Why does the valve come alive when I start the engine?
Whenever you start the engine, the valve comes alive and waits in a closed position, blocking the flow of exhaust gases.
What can cause an EGR valve to be stuck?
An increase in hydrocarbon emissions isn’t necessarily caused by a stuck-open EGR valve. Problems in other systems may cause this same symptom as well: a leaking fuel injector, bad ignition timing, bad cylinder compression, bad oxygen sensor, or other problems.
Where are the EGR Jets in the intake manifold?
A more radical design, implemented in a few models, was the replacement of the valve with EGR jets at the bottom of the intake manifold. Some newer high-efficiency engines, for example those with variable valve timing (VVT), don’t even use an EGR system. If playback doesn’t begin shortly, try restarting your device.
Is there a problem with my 98 civic?
With my response, “just because every 98 civic with a crack has not drove into your dealership and reported you the problem DOES NOT MEAN the problem with your companies manifolds does not exist!” She shrugs her shoulders, it was going no where.
How to tell if you have a problem with your exhaust manifold?
1 Excessively noisy engine One of the first symptoms of a problem with an exhaust manifold gasket is an excessively noisy engine. 2 Decrease in power, acceleration, and fuel efficiency Engine performance issues are another common symptom of a problem with an exhaust manifold gasket. 3 Burning smell coming from the engine bay
What are the symptoms of a failing IAC valve?
Symptoms of a failing idle air control valve. Your check engine light is on: The computer monitors the IAC valve to make sure it’s working correctly. If something’s wrong, it will turn on the check engine light. 3. The car stalls: A faulty IAC valve can prevent the engine from getting enough air to idle properly. As a result, the car may stall.
Why does my car not start when I Turn on the ignition?
The car won’t start: In extreme cases, the IAC valve may cause too much or too little air from entering the engine when you turn the ignition, resulting in engine that cranks but doesn’t start. Get it diagnosed by a professional The IAC valve is used to control your engine’s idle speed and prevent it from stalling.
What does it mean when your fuel pump wont start?
Of those, the easiest thing to check is to see if there is any gasoline in the vacuum line going to the fuel pressure regulator. If there’s any at all in that line, it means the diaphragm has sprung a leak and the fuel pressure regulator needs to be replaced. I checked the regulator and theres no sign of gas leaking.
What causes a car to not start with no gas?
Problem may be at wiring connector on top of fuel tank (hard to reach!). No gas in fuel tank (Check the fuel gauge, and keep in mind the gauge may not be reading accurately). Bad gas (Contaminated with water or too much alcohol or diesel fuel). If you just filled up with gas and now your car won’t start, suspect bad gas.
What are the symptoms of a bad EGR valve?
A rough idle upon starting the engine (that is, when the engine is cold) and sometimes at a stop light or while looking for a spot in a parking lot (that is, at low engine speeds in a warmed-up engine). Stalling when the engine idles. Increase in fuel consumption.
Where to check for no start fuel pump?
The first thing you want to do is check the fuse panel to see if the fuse is blown. If your car has two fuse panels than the one in the engine compartment; should be the correct one to check. The fuse panel or circuit box is usually located near the battery; and is a small black box with a removable lid.
Problem may be at wiring connector on top of fuel tank (hard to reach!). No gas in fuel tank (Check the fuel gauge, and keep in mind the gauge may not be reading accurately). Bad gas (Contaminated with water or too much alcohol or diesel fuel). If you just filled up with gas and now your car won’t start, suspect bad gas.
Why does my fuel pump fail when I restart the car?
So when you restart your car, the pump runs hot and un-primed until it can refill the fuel chamber. Over time this will burn out the pump motor. This is why many pumps fail right after shutting off the car and restarting it while it is hot.