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"Giraffe Necking" is the term used to describe the appearance of a tube showing a number of uneven hotzones. It may occur for three main reasons. It may be an extreme type of the hot zone problem caused by extensive deactivation by catalyst poisoning or masking by a surface deposit. It may also be caused by channelling in the catalyst bed, where the gas passes preferentially through certain parts of the catalyst. When channelling occurs, the tube is cooled where gas is flowing and the reaction is occuring and overheats where the passage of gas is blocked. Channeling can be caused by packets of broken catalyst and dust or by accumulation of carbon. Lastly, especially in the case of old catalyst, giraffe necking may indicate that the catalyst is nearing the end of its active life and parts of it are falling below the minimum required activity and the catalyst requires charging.
There are many observations that may occur when a chemical reaction takes place. Some of the things are:- Change of colour, change of temperature change of state. These can be observed by the features below There might be a change in colour when mixing the reactants; the vessel in which the reaction is taking place might get warm on the outside or cold depending on the type of reaction. There may be effervescence or fizzing with gas production; a precipitate may form.
The amounts of reactants and products are not mentioned.dark
This reaction is called photosynthesis.
No, this is the fusion reaction which occurs in the sun and other stars. See the link below.
16803 - Main Catalyst, Bank1 Below Threshold 16803 - Main Catalyst, Bank1 Below Threshold
what is a warm up catalyst below threshold parts look like? and It is for a car mit Elcipes.
Catalyst system efficiency below threshold, bank 1. Catalyst system efficiency below threshold, bank 1.
See link below.
Catalyst efficiency below threshold, your catalytic converter may have failed.Catalyst efficiency below threshold, your catalytic converter may have failed.
This code is for the catalyst system efficiency is below threshold
"Giraffe Necking" is the term used to describe the appearance of a tube showing a number of uneven hotzones. It may occur for three main reasons. It may be an extreme type of the hot zone problem caused by extensive deactivation by catalyst poisoning or masking by a surface deposit. It may also be caused by channelling in the catalyst bed, where the gas passes preferentially through certain parts of the catalyst. When channelling occurs, the tube is cooled where gas is flowing and the reaction is occuring and overheats where the passage of gas is blocked. Channeling can be caused by packets of broken catalyst and dust or by accumulation of carbon. Lastly, especially in the case of old catalyst, giraffe necking may indicate that the catalyst is nearing the end of its active life and parts of it are falling below the minimum required activity and the catalyst requires charging.
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
Catalyst System Efficiency Below Threshold (Bank 2)
Trouble code P0432 means:Main catalyst efficiency below threshold
for the evap try changing your gas cap. most likely a vacuum leak. as for the catalyst code if its reading catalyst below threshold you need to change the catalytic converter. that's most likely your problem if you have changed the down stream o2 sensor.
There are many observations that may occur when a chemical reaction takes place. Some of the things are:- Change of colour, change of temperature change of state. These can be observed by the features below There might be a change in colour when mixing the reactants; the vessel in which the reaction is taking place might get warm on the outside or cold depending on the type of reaction. There may be effervescence or fizzing with gas production; a precipitate may form.