Re: Re: diesel fuel types smoke

Posted by David UK on July 09, 2003 at 15:26:14 from (62.252.128.10):

In Reply to: Re: diesel fuel types smoke posted by red-n-green on July 08, 2003 at 16:21:10:

Grey/white smoke is normally caused by vapourised but unburnt fuel. It happens at startup until engine is warm enough to burn everything properly but also can happen if fuel injection occurs too late. Advancing the injection pump timing can help. There's no guarantee it was right to begin with. A lot of pumps are removed and just stuck back on without being timed at all. Also, on old engines backlash builds up in pump drivetrain and that can throw timing off too. You could try advancing pump timing a little to see if it helps. Correct way is with proper setting gauges but turning pump slightly and listening to engine and watching effect on smoke emission can also be a good guide. (If it starts knocking its too far advanced.) I'd reckon to get it set it as far advanced as I could without it starting to knock under load.

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