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running too rich ?
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CarGuru > Mercedes > running too rich ? 15 April 2005 10:43:07

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running too rich ?

Billemery 15 April 2005 06:12:19
 can a 300 td diesel be running too rich ? what controls the fuel / air
mixture ?


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T.G. Lambach 15 April 2005 10:43:07 permanent link ]
 The throttle controls the fuel and the engine's turbo supplies
appropriate air for the engine's speed.

Diesels can never run too lean as can gasoline engines.

Diesels will run too rich and smoke when their intake air is restricted
by say, an oil soaked air filter.

A diesel's injection pump can be mis adjusted to inject too much fuel
(smoke) and it can be mistimed to inject the fuel too soon (knocking),
or too late (poor power and smoke).

A diesel with weak compression (due to worn piston rings and / or valves
in need of adjustment) may smoke because its not achieving the
compression and heat needed for good fuel combustion.

Hope this helps you.

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CarGuru > Mercedes > running too rich ? 15 April 2005 10:43:07

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