plug
A spark plug (sometimes, in British English, a sparking plug, and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within the engine. A spark plug has a metal threaded shell, electrically isolated from a central electrode by a ceramic insulator. The central electrode, which may contain a resistor, is connected by a heavily insulated wire to the output terminal of an ignition coil or magneto. The spark plug's metal shell is screwed into the engine's cylinder head and thus electrically grounded. The central electrode protrudes through the porcelain insulator into the combustion chamber, forming one or more spark gaps between the inner end of the central electrode and usually one or more protuberances or structures attached to the inner end of the threaded shell and designated the side, earth, or ground electrode(s).
Spark plugs may also be used for other purposes; in Saab Direct Ignition when they are not firing, spark plugs are used to measure ionization in the cylinders – this ionic current measurement is used to replace the ordinary cam phase sensor, knock sensor and misfire measurement function. Spark plugs may also be used in other applications such as furnaces wherein a combustible fuel/air mixture must be ignited. In this case, they are sometimes referred to as flame igniters.
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Spark plugs may also be used for other purposes; in Saab Direct Ignition when they are not firing, spark plugs are used to measure ionization in the cylinders – this ionic current measurement is used to replace the ordinary cam phase sensor, knock sensor and misfire measurement function. Spark plugs may also be used in other applications such as furnaces wherein a combustible fuel/air mixture must be ignited. In this case, they are sometimes referred to as flame igniters.
View More On Wikipedia.org
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Plastic drain pipe screwed access plug removal
My house (built in the 1980s) has number of solvent welded screwed access plugs to clean the drain pipes in the bathroom, kitchen etc. They are similar to the polypipe one shown below but have a lower profile cross shaped grip which makes them difficult to remove and refit. Is there a special... -
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Can you help identify the jacuzzi / whirlpool / spa bath so that I can replace the drain plug seal?
Hello I am trying to identify a jacuzzi / whirlpool / spa bath so that I can replace the drain plug seal which I suspect is leaking. Unfortunately I cannot get to the actual bath to investigate myself a common problem at the moment I think. The owner has supplied pictures of the bath, plug seal...- paul-h
- Thread
- bath drain help identify plug replace seal whirlpool
- Replies: 3
- Forum: Bathrooms, Showers and Wetrooms
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Radiator plug part identification
Hello everyone, the piece shown below broke when removing it from the T-piece from one of my radiators. The outside screw piece broke in two. It seemed to be closing the steam trap. I need to replace it but don't know what it is called and my local (South London) plumbing supply store didn't... -
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Looks like the bath plug is leaking...
It looks as though the bath plug is leaking even though the water is dripping further up the basin as it were (i.e. in the direction of the overflow pipe/towards the camera) and not from the area immediately around the plug. I'm not too confident in replacing the plug (visions of flooding after... -
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Recommendations for plug to avoid need to drain down storage tank
The isolating valve on the tank outlet is sized so I'm looking for a tool or technique for plugging the tank outlet so the valve can be changed. I can feel that the bore of the fitting to be plugged is not smooth, appears to have 2 ridges! Advice and suggestions, please -
Kitchen sink plug won't stay open!
Hi everyone, my kitchen sink plug won't stay open! It’s really frustrating. It’s held up by a little plastic hoop around the shaft, and friction is supposed to stop it closing. But it’s too easy to close – just running water will close it, and I have to hold it open all the time I want to empty... -
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Bath plug rubber seal replacement
Hi All, I hope this is an appropriate place to post this, Im struggling a little with a replacement part i need. We have a Villeroy Boch Subway bath, when we bought it we bought a matt black plug and knob thing to raise / lower the plug. On the plug, the rubber ring around the center of it... -
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How to change blanking plug valve on heated towel rail?
Hello team, I just noticed that in one of my bathroom, the blanking plug valve on the towel rail is leaking. I just moved in this new house and the valve looks old and the seal a little damaged. Anyway, I just ordered a replacement but I have no idea on what is the process to change that. What... -
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Heatline Capriz Plus Drain Plug
Hello, i require a drain plug for a Heatline Capriz Plus 28a, i've just phoned up the spares line and have been given a code of 0020203966, but when i look this up at any supplier it is listed as a 'handle'. I'm just wondering if anyone else has ever needed one of these, if they managed to get...- Zippymark
- Thread
- drain heatline plug plus
- Replies: 4
- Forum: Gas Engineers Forum
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Dishwasher E-24 error , blue plug??
Hi, A complete novice diyer here, who is slowly recovering from a nightmare installation from a.o. I often get an E24 error message from my dishwasher and a build up of water inside but there never seems to be any blockage that i can see. i have checked the pipes and believe i may have found the... -
Bath and sink waste and plug recommendations
Hi everyone, I'm having a traditional bathroom suite fitted soon and having made all the big decisions am now stumped about the waste and plug practicalities. I'd like recommendations on the best waste options that will look good in an art deco styled bathroom, work well and be long lasting. Are... -
J
My kitchen sink plug whole stinks, is this a proper under sink setup?
Evening. I’ll start by being honest, I’ve no idea with plumbing, I’ll understand basic concepts but... The house I’ve bought has a kitchen with the below photo of underside of the sink. In a morning or at occasions where it’s been left for a while when water (or whatever really) is drained off... -
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Replacing the type of plug
Hello. Total novice here. We have a pop-up thumb plug (think that's the name, following a Google search - photo attached). It was here when we moved in (I personally would have chosen a standard plug type, I find these pop up ones faffy). My husband pulled this out today to declog the sink and... -
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Correct type bath plug?
Hi - can anyone help? I’m trying to find a replacement plug for my bath (plug hole in pic) but have no idea of the type needed. Other pop up plugs don’t appear to fit. Thanks- DanCur
- Thread
- bath correct plug
- Replies: 10
- Forum: Bathrooms, Showers and Wetrooms
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Cooker igniter at risk or if?
Freestanding cooker with 4 gas rings has had the fuse taken from the plug so no electronic ignition for the gas rings. Is the sparker a safety control?does the lack of spark make this at risk or ID?- granspasties
- Thread
- cooker domestic fuse plug
- Replies: 5
- Forum: Gas Engineers Forum
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Random bath plug hole smell and gurgling
Hi, We moved into a new house a few months ago, we have a main bathroom (which is not used) it has a problem with the bath plug hole emitting a sewer/egg smell about every 7 days, running water down the plug hole clears the smell but only for about 7 days then it comes back again. Now a second... -
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Swivel plug stuck with grit
Hi, New here. I'm a freelance Web Designer so not a Plumber so please excuse my naivety - well that's that covered, lol. I have a couple of issues. We had a new bathroom refurbishment in 2015 but have had a few issues and the original builder just wasn't interested in assisting or advising. We...- AndyDOHD
- Thread
- plug stuck
- Replies: 6
- Forum: Plumbing Jobs | The Job-board
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Plug a 17mm OD Copper Pipe
Hello, I found a 17mm OD pipe, which looks steely, in the walls of our house. It's disconnected, but don't know where the other end connects to. I want to plug it and plaster over it, any idea how to cap a 17mm pipe? Many thanks, Adam- Adam Gilbert
- Thread
- copper pipe plug
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- Forum: Plumbing Jobs | The Job-board
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Sulphuric acid, hair in shower plug, very weird thing occuring
Hi guys, I've got a bit of a strange one here and wondering if anyone else has found this situation or has an explanation. Both me and the Mrs are long-haired types so the shower drain gets quite clogged with the stuff which I have to clean out every now and again. In my line of work I've...- Stigster
- Thread
- plug shower thing weird
- Replies: 5
- Forum: Plumbing Jobs | The Job-board
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Identify a waste pipe part and how to plug it off
Weve just bought a 1930s house and the previous owners appear to have just ripped out the washing machine waste pipe and inlet valve as the waste pipe was a mess leaking everywhere, they switched off the isolation valve for the hot water thinking it was the washing machine isolation valve which...- B4rrett
- Thread
- identify kitchen parts pipe plug waste waste pipe
- Replies: 6
- Forum: Plumbing Jobs | The Job-board
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