Knocking is the sound of abnormal fuel combustion. It is caused by abnormal combustion of the air-fuel mixture in the cylinder. When a spark initiates combustion in a spark-ignition internal combustion engine, the flame front should fan out from the spark plug and travel across the combustion chamber rapidly and smoothly.

If you have a 2000-2004 Isuzu, make sure you only use Denso K16PR-P11 spark plugs. Check the link below to buy them for 6.80/plug (note the dealer charges about 17/plug) The 2000-2004 engines have the GM/delphi "ion sensing" ignition system where the spark plugs are used as a sensor (when they are not firing) to measure the electrical resistance of the gasses in the combustion chamber. Other plugs may cause the ECU to register a code (misfire code: P1340).

Port knocking is a method by which a remote computer (client) communicates with another computer (server) across closed ports. Information is encoded in the sequence of ports to which the client attempts to connect. The information flows in one direction, from the client to the server. The server does not send any response to the client as receipt of the information. Once encoded into a sequence of port numbers, any information can be sent across closed ports.

Occasional light knocking or pinging won't harm your engine, and doesn't indicate a need for higher octane. But don't ignore severe knocking. A heavy or persistent knock can lead to engine damage.

Commonly this is caused by the idler tensor that keeps the serpentine belt (the only you can easily see on the engine) taught that is bad ? or ? the timing belt tensor is bad.

In the current TCP/IP paradigm, a server may offer a number of network services (e.g. SSH, POP, IMAP). Services listen to connections on specific ports (e.g. 22, 110, 143). These ports are open and any client may attempt to gain access to the services. To control access at the time of connection, a packet-filtering firewall is used to restrict client connections by their IP address.

Because I'm so much of a feminist I spread blame equally. In this case, though, most goes to women because they're (understandably) more preoccupied with their pregnancies. And because having babies is much more a loaded issue for women than men (again, understandably.)

Answer: This refers to the way in which a player uses the Ninja Rope to "knock" one or more worms. Sometimes to make a pile. This is done by swinging near a worm and letting go of the rope right before you hit the worm. Therefore sliding into another worm and pushing him. This is mostly used in Rope-Shopper games to create a pile. In Worms Armageddon Rope Knocking can only be done online. In offline games rope knocking is disabled.

If the police are investigating criminal activity and you are not a suspect but a potential witness or you have other information which could be helpful to their investigation then it is your civic duty to cooperate and help as much as possible. However, if you think for even an instant, and I am talking nano-seconds here, that the police suspect you of some criminal activity, Refuse to do any talking.

A knocking from the rear is more than likely going to be part of the exhaust hitting the chassis. The exhaust is very heavy and not particularly well located, and also grows in length when hot by about 1 1/2 inches! There are also known problems with the rear shocks causing knocking (although this should be only when cold), the differential bolts can work loose, the diff mount can fatigue and crack, or the diff mount bush can split.

While the fuel injectors have a distinct tapping noise (usually under higher throttle), at a light load and low speed there seems to be "piston slap" on some people's cars. This occurs in some of the Corvette LT1s as well. There doesn't seem to be anything in the service manuals. Most dealers seem to acknowledge the problem and say it's normal, which it seems to be. For some reason, the pistons shrink enough in the cold weather so as to "slap" around a little.

Yes, if you knock me out of a regular multi-table tournament, you'll receive as a bounty the amount of the tournament buy-in, PLUS a T-shirt that reads "I busted Andy Bloch at Full Tilt Poker." If the pot is split, you'll split the cash amount and will each get a T-shirt. Similarly, you'll get a bounty if you knock out any of the 20+ other red pros. Some special tournaments have increased bounties on one or more pros.

detonation and pre-ignition are about the same thing, they just happen at different times in the compression cycle. pre-ignition is either caused by hot spots that pre-ignite the fuel before the spark plug goes off or the actual compression of the air/fuel igniting the mix. remember, when you compress a gas, you heat it up. that's why too much boost can cause extra high cylinder temperatures and subsequent pre-ignition. a lot of people call this detonation, but it isn't.

The system has several different pieces of equipment that are hidden under the covers. Some of these are loops of wires that are imbedded in a very hard plastic material. These wire loops emit a radio frequency that, together with the powerful magnet, take the MRI picture. The radio frequency turns on and off very quickly, approximately every four milliseconds. Because this is so fast, the wires vibrate in the hard plastic and cause the knocking sound.

The tapping or knocking noise heard during the MR exam is created when "gradient coils" are switched on and off to measure the MR signal reflecting back out of the patient's body. Depending on the type of study being performed, the knocking may be loud enough to require ear plugs or head phones for the patient. Please discuss this with the technologist before your examination.

This may be the result of dough that is too hard and dry. The knocking noise is the result of the hard dough being “thrown” against the sides of the baking pan. Add water or milk one teaspoon at a time, until the dough forms a ball. If the Home Bakery breadmaker continues to make knocking noises, check to be sure that the baking pan is locked in place in the machine. If your Home Bakery breadmaker is old, you may need to replace the lock springs.

That is called a water hammer. Water hammer is a vibration in the pipes. Water hammer has many causes:

Noisy boilers are usually caused by hard water lime-scale and sludge deposit formations on the heat exchanger surface which causes the surface to become too hot, resulting in localised boiling, irritating noises and ultimately, failure. Scale forms because the solubility of its prime constituent, calcium carbonate decreases with increase in temperature.

Powerball is a finely tuned product which has been designed to run smoothly and quietly at all times of its operation and this knocking noise is certainly out of character with the product. There is one likely cause and we can go through it as follows: Whenever the unit is dropped onto a hard surface it can sometimes cause a knocking noise similar to this.