Perhaps this may help you in your search for causes. A high hydrocarbon reading is usually unburnt fuel. If the CO reading and the NOx readings are below the limit then look towards an ignition problem as being the most likely culprit. As the prior answer suggested, start checking items and begin with the basics. Year, make model, engine size, options, symptoms etc will help you get a more accurate answer next time.
Check the plugs first, all of them! One bad plug will give you a miss and everytime the car misfires unburnt gas goes into the cylinder and out the exhaust which raises the HC. Same goes for the wires (check resistance with a multimeter) check the distributor cap & rotor (if applicable) for cracks, corrosion or burnt areas. Might want to do an injector service (if applicable), a sticky injector might put fuel in at times when its not supposed to and up goes the HC. If the check engine light is on 1st thing to do is pull some codes and this will give you some direction. Codes can be pulled manually by using the diagnostic connector or a scanner.
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High hydrocarbon levels are also seen with a much too lean mixture. If you are looking at an older carburated car, check this first. A lean mixture will not burn completely, and unburned mix goed out the tailpipe. An overly rich mixture burns fine, but to carbon monoxide, not dioxide. So a rich mixture will fail on CO, not HC. This is the reason for the vacuum hose fix - it cuts down the amount of air entering the engine, while leaving the fuel the same ( or increasing it a little if the leaks are really bad ). This said, the ignition system is also suspect, as any misfire will increase HC. So, check your vacuum hoses (lightly spray connections w/ carb cleaner, an RPM increase means a leak), change your plugs and wires if they're more than a year old, and richen the mixture a hair if this adjustment is available.
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I had to replace a lot of vacume lines to get mine to pass. It also could be o2 sensor, bad spark plugs, rich idle(too much gas), bad spark plug wires, bad injectors(or carburetor), bad ignition coil/cap/rotor(weak spark), bad catalytic converter/clogged muffler, exhaust leak, etc.
Currently it would have to be the telecommunications industry. because you stink?
Because that would make them more suitable as Soldiers.
because it wouldnt make sense it would sound funny
no, mostly because noone wants to make one and what city would they have room to put an arena?
because they gotta make it a legit sport where people can watch it nationwide from all ages, if there wasnt rules it would be a blood bath.
What two hydrocarbons are used to make plastic
Cracking hydrocarbons is very important because in order to power our cars and warm our homes we have to use crude oil which is cracked into smaller hydrocarbons which make diesel and petrol and other types of fuels for our homes and environment. :)
Hydrocarbons may be considered as nonpolar molecules.
no. hydrocarbons make up crude oil and in combustion they are burnt to make CO2
Because hydrocarbons are a whole (referring to fractions) and the molecules (represent the fraction) that make up the whole are carbon and hydrogen CH4 this means that the hydrocarbons consist of 1carbon and 4 hydrogen molecules.
No but they can be used to make Plastics
Covalent bond between Carbon and Hydrogen store considerable amounts of energy,hydrocarbons make good fuels. Gasoline for example is rich in hydrocarbons.
to make carbon dioxide and water
you have to write what you think about the question
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Petrol, is different from Kerosene because the hydrocarbons that you find in Petrol will generally have less hyrdogen and carbon atoms than Kerosene would have. E.g. the hydrocarbons that make up Petrol may have in between 4 to 12 carbon and 10 to 26 hydrogen atoms, whereas Kerosene would have between 6 to 16 carbon and 14 to 34 hydrogen atoms.
yes