Q:ex: 4 stroke 16 valve engine

To give you an example: my car has a 4 stroke Otto cycle 4 cylinders engine. It has 16 valves. Every cylinder has 4 valves, 2 to intake fresh combustion fluid ad 2 for the exausts. It's a double over head camshaft engine (DOHC). A 2 stroke engine doesn't have valves as a 4stroke. In a 2 stroke engine (in Otto cycle, I don't know in Diesel cycle) the piston works as a valve. Take care

Q:Mostly suction apparatus with dual head motor, consist a non-return valve, what is its function to have it on the apparatus and not to have it?

It depends on the size and pressure rating as to the material used. Small lower pressure valves can be brass or bronze while larger high press valves will be made from cast steel. Brass can be used for some internals because it is corrosion resistant. It is also softer which makes is good for seating material.

Q:will adding a bypass valve onto an air filter effect gas milage or horsepower?

bypass valves are for cars with forced induction IEturbocharger,supercharger it allows the air that would normally be expelled into the atmosphere blow off valve and instead putting it back into the intake which helps with less lag in building boost again. If your car is not turboed or supercharged then forget it.

Q:Hi all, I found oil leakage in my distributor and am about to change the o rings. however, i feel that a blocked PCV valve is causing the pressure to push oil into the distributor. I have been searching for the PCV valve. Can someone please tell me where it is?

The PCV valve is located beneath the intake manifold on the right (passenger) side. It threads into the breather seperator and points toward the center of the car. To remove it, you'll have to remove the Idle Air Control valve located on the end of the manifold log. Be aware that you'll have to do at least part of this task underneath the car, and that the IAC valve has antifreeze circulating through it Get a mechanic to do it if you can afford it

Q:I have a no start on a briggs and straon 16.5 OHV. It has spark, and fuel. and backfire's through the intake. I took off the top of the motor to check the key way and it was in place. I think its a valve timing issue but what times the valve? I have not removed the flywheel yet because i need a puller. Is there another key way under the flywheel that times the valves

No, there is not another key. Valve timing is controlled by a gear on the camshaft and a gear on the crankshaft. There are marks stamped on the gears that have to be matched when putting the engine together. Without breaking one of the gears, valve timing will not change. I would guess that you have something wrong with the intake valve or valve seat. Take the valve cover off and see if the valve is moving, and check the clearance. I believe it should be .003-.005. If the valve is moving freely and the clearance is ok the head will have to come off to check the valve head and the seat. Did you hit something with the mower? Are you certain that the key is intact? With the flywheel nut off you should be able to see both keyways and the key. Make sure that you torque the flywheel nut back on to 60 ft lbs or so or you will shear the key when it starts.

Q:How many valves are involved in th etypical 4-stroke cycle? Is it the intake and exhaust valves only? If my car engine has 12 valves, how many cylinders does it have?

nowadays usually it's four valves per cylinder, though still u may find 2 valves per cylinder. u cann't know how many cylinders u have from knowing the number of valves, it depends on the design.

Q:How would this affect the functioning of the heart valves?How would this be detected in a routine examination?

Endocarditis is usually caused by bacteria. When symptoms are prevalent, blood cultures are done to detect what sort of bacteria is present. Many types of bacteria can cause endocarditis. Normally, blood flows smoothly through heart valves. But if they have been damaged, by some other medical condition, defense mechanisms (such as white blood cells) cannot enter the valves. Then bacteria can have a chance to take a hold on these valves. So if bacteria establishes a hold on the valves, the body cannot get rid of them. Antibiotics can be used to treat the infection. If antibiotics does not work, then the infected valves are removed surgically and replaced with transplants or artificial valves. I hope this helps. good luck

Q:ok im 17 and had really bad chest pains for like 2 years and the dr told me last year my valve was leaking and the pains have been getting worse what should i do?

Your doctor should have referred you to an heart specialist. Don't be asking kids here, ask the doctor!

Q:i believe it's to do something to the valve guide to make it the right clearance n not go straight to the valve seat right? or is valve seat next?

Once the valve guide is installed, it has to be reamed to fit the valve stem. After it has been reamed to fit the valve stem, the new valve needs to be seated in. (The valve seat should have already been done by this point) This can be done with a machine tool, or it can be ground in by hand with valve grinding compound. Once this is accomplished, the valve is removed, everything is cleaned thoroughly, and the valve is reinstalled with the spring and keeper. Normally you would do all the operations to all the valves at the same time. (That is, you don't grind in one valve, then go back and ream another valve stem. You do all the operations required at one time. So you would install all the valve guides, then ream them all, then grind or face the valve seats, then check the valve contact area, then remove all the valves, clean the head and valves up, and then reasemble into a completed head unit.)

Q:Its a 1981 Monte Carlo SS with a GM 350 crate motor. There is oil all over the heads valve covers. It isn't my car, but I was thinking of buying it..Thank you.

If my reasoning is correct.. the answer is all to obvious.. the oil spot saturation is caused by none other than Loki, god of mischief and mayhem. If you could kindly point me in the direction of my half-brother I would be more than happy to hit him with my big dumb hammer. -THOR