Maintenance:Engine/Decarbonising: Difference between revisions
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Over time, carbon from | Over time, carbon from running an overly-rich fuel mixture can accumulate in your head. This problem is more likely in older, carburettor-equipped engines. | ||
= Signs you need to decarbonate your engine = | = Signs you need to decarbonate your engine = | ||
* Engine keeps running on after you turn it off. | * Engine keeps running on after you turn it off. | ||
* Popping, surging, spark breaking down | |||
= How to decarbonise your engine = | = How to decarbonise your engine = | ||
== The easy way == | == The easy way == | ||
Give it a good thrash for a few minutes. Often a carbed engine leans out (towards stoich) at higher rpm, and the good burn takes some of | |||
Be careful not to let your engine | With the engine running and air filter off, spray some misted water, or carby cleaner, into your carburettor. Be careful not to let your engine stall during this process. Hold the throttle wheel open a little bit. If you have excess spray around the carburettor, put your fingers over the opening to seal it off and create greater suction inside the carb, and give the engine a good hard rev for a few seconds. | ||
== The hard way == | == The hard way == | ||
Revision as of 00:47, 29 April 2005
Over time, carbon from running an overly-rich fuel mixture can accumulate in your head. This problem is more likely in older, carburettor-equipped engines.
Signs you need to decarbonate your engine
- Engine keeps running on after you turn it off.
- Popping, surging, spark breaking down
How to decarbonise your engine
The easy way
Give it a good thrash for a few minutes. Often a carbed engine leans out (towards stoich) at higher rpm, and the good burn takes some of
With the engine running and air filter off, spray some misted water, or carby cleaner, into your carburettor. Be careful not to let your engine stall during this process. Hold the throttle wheel open a little bit. If you have excess spray around the carburettor, put your fingers over the opening to seal it off and create greater suction inside the carb, and give the engine a good hard rev for a few seconds.
The hard way
Take your head apart, and clean it.
Until someone writes a guide specific to a Corolla engine, refer to http://www.elsham.pwp.blueyonder.co.uk/cx500/decoke/. This page refers to a motorbike engine, but the theory should be the same.