Q:I am looking at buying a 2001 Pontiac Bonneville and the guy said the car's check engine light says it had a problem with the EGR valve and so he bipassed it somehow. He said a EGR valve isn't needed. Is this valve very important or needed? What does it do? Thanks

I have a 1996 Firebird with the same 3.8L V6 motor. I recently had to have the EGR valve replaced, as well. I am not sure- but I think that the EGR valve has to do with the emissions. It may not pass an emissions test if the EGR valve has been bypassed. If you have to have it replaced, it probably won't be that expensive. Good luck. EDIT: here is an explanation of what an EGR valve is, and what its function is, thank you to this gentleman named Shovelkicker for providing an answer elsewhere in 'answers.' This was not my own post- this mechanic whose name is Shovelkicker wrote this explanation, which was written about one year ago in response to another individual's question regarding what an EGR valve is. (The) EGR valve is the Exhaust Gas Recycling valve. This is for when a motor is cold and needs extra fuel to keep running. Back in the days of chokes you would restrict the air going into the carburator to make the car run richer. With fuel injection cars more fuel is added to the engine to richen the mixture. This richer mixture causes the exhaust to have unburnt hydrocarbons, meaning not good for the environment. The EGR opens and allows some of the exhaust to be added back into the intake to be reburned. Once the engine warms up to operating tempurature the EGR closes. The EGR should be a UFO looking item about the diameter of a big coffee cup. Should be brownish metal, lightly rusted from the heat. A a steel pipe, around 1/2 to 1 inch in diameter, will run from the EGR to the exhaust at the back of the engine. Some EGR valves are on the front of the engine, some at the rear. Most frontwheel drive cars with will be right above the exhaust manifold on the front of the engine.

Q:The Hawker Tempest was the fastest piston powered airplane ever made, it had a sleeve valve engine. It was made obsolete, by the Me 262 and other jet engined fighters, But it's engine was the ultimate piston aircraft engine. Then piston engines became something for inexpensive planes, but why has the sleeve valve not undergone further development as a sports car engine?

i like to call them the two creation memories of Genesis the 1st tale which starts Genesis a million and ends Genesis 2:3 the 2d tale starts with Genesis 2:4 and keeps onward. on the tip of Genesis a million:27 it states that God created the two guy and lady which gave upward thrust to the perception that guy and lady have been created on an identical time interior an identical way wherein the guy replaced into Adam and since the story is going the female replaced into Lilith. yet of direction you will desire to comprehend that the Lilith tale is basically that a narrative in fact the Hebrews did no longer even supply her a acceptance the call originated latter on however the Lilith tale is folklore. The Lilith tale began for the period of the Babylonian exile of the Jews in spite of the undeniable fact that it would evolve for the period of the middle an prolonged time in Europe.

Q:what exactly is thc pcv valve and what does it do

PCV stands for positive crankcase ventilator all engines need this device to work properly

Q:Okay, so veins have valves to help counteract the pull of gravity. I'm wondering, do the veins in the head have this same adaptation, seeing as these veins are simply bringing blood down to the heart, and are not pulling against gravity.

Valves counteract the pull of gravity. They also prevent blood clotting. Yes, because if they didn't, the blood could flow too fast and pool in your veins, which causes blood clots, which isn't good. So to monitor the amount of blood going through veins in the head or neck, the valves close, and open. Hope I helped. -Selene

Q:Hey quick Q, I heard somewhere that you could degrease the the reed valve? I love cleaning up my CR250 as much as I can. I just want to know if this is done, and if you could, tell me where I'm supposed to clean.Thanks.

Spray degreaser down the air intake-that should fix it.

Q:where are the proportion valves located on a 1991 buick skylark?

Brake light staying on in the dash? The proportional valve, or transfer valve is a part of your brake system. Look directly under the brake master cylinder, there is a long square block of steel or brass, about 4 to 5 inches long. It will have two brake lines from the master cylinder going in, and two more coming out, going to the four wheels. In the middle, or one end, will be a wire attached. If your brake light on the dash is on, it means the valve shifted off center, because one wheel cylinder/caliper may have failed, or one of the two reservoirs in the master cylinder is out of fluid. Once you find out what the real problem is with te brakes, the system must be bled in a certain way to re-center the valve, so the light goes out.

Q:Does anyone out there have any tech info or schematics for state of the art camless engines that run pneumatic valve train?

not really

Q:What are the function of reed valves on a motorcycle?

there are quite a few types,reeds/reed valve/disc valve..all 2 strokes have some sort of reed system...idea is that fuel is sucked past the reeds,these then close letting the fuel travel where it needs to go,opening when its time to suck fuel in....and so on

Q:What exactly is a flow valve for an ice maker on a refrigerator? Any idea what it would cost to replace it? Is it easy to replace?

Hi, Yeah. The site I found (source) has some pretty good information. Find the model number on the refrigerator and call repair services. You may need to replace a part. If there is no water flow, maybe something is clogging the line and it can be cleaned. With today's economy prices are difficult to predict. PJ

Q:I'm drawing a complete diagram of the heart, but I'm unsure of the positions of the different valves. I know there are the pulmoary valve, the aortic valve, tricuspid/right AV, bicuspid/left AV, semilunar valves, mitral...but I know there are several names for some of them, like I think the mitral and the bicuspid are the same...but there are so many sources online I don't know which to believe. If anyone knows for absolute sure the right names and where they are it would be very appreciated if you could help :)

the bicuspid is the same as the mitral valve it seems like anatomy has 12 names for everything In anatomy, the heart valves maintain the unidirectional flow of blood in the heart by opening and closing depending on the difference in pressure on each side. They are mechanically similar to reed valves. There are four valves in the heart (not counting the valve of the coronary sinus, and the valve of the inferior vena cava): The two atrioventricular (AV) valves between the atria and the ventricles, also called tricuspid and bicuspid. The two semilunar (SL) valves, in the arteries leaving the heart, also called pulmonary and aortic. This I know for sure. Drawing pictures always helped me keep it straight and I just got an A in anatomy. best of luck to you