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scoobiesuz
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Joined: 04 May 2006
Posts: 948
Location: Ohio
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 Posted: Fri Mar 09, 2007 7:27 pm Post subject: Any problems with the ULSD? |
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We've had a lot of black smoke- don't know if it has to do with the ULSD or just a problem related to the engine/EGR valve/etc...
Just wondering what opinions are.
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Russellmania
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Joined: 29 Jun 2006
Posts: 2653
Location: fuel island
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| Posted: Fri Mar 09, 2007 11:17 pm Post subject: Re: Any problems with the ULSD? |
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| scoobiesuz wrote: | We've had a lot of black smoke- don't know if it has to do with the ULSD or just a problem related to the engine/EGR valve/etc...
Just wondering what opinions are. |
From: http://www.neptuneproducts.co.nz/shop/Smoke.html
Black smoke is the most common emitted from diesel engines and indicates incomplete combustion of the fuel. Black smoke causes can vary widely and include ..
* Incorrect fuel injection timing
* Dirty or worn fuel injectors
* Over fuelling
* Faulty turbocharger, or turbo lag
* Faulty or dirty exhaust gas recycling (EGR) system
* Incorrect valve clearance
* Incorrect fuel to air ratio
* Dirty or restricted air cleaner systems
* Over loading the engine
* Poor fuel quality
* Cool operating temperatures
* High altitude operation
* Excessive carbon build-up in combustion and exhaust spaces
Black smoke can occur across the entire operating range, but is usually worst under full power, or during the lag before the turbocharger boosts air supply to match the fuel usage such as in the early stages of acceleration and during gear changes. Moderate turbo lag smoke is acceptable, otherwise black smoke should be hardly visible in a correctly running engine.
It appears to be a New Zealand based site that deals chiefly with marine engines but could apply to any diesel application I would think. Anyway I hope this helps...Russ
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