Black Smoke

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Landy_anna

New Member
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2
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Ceredigion
I have a 1959 Series 2, that's been rebuilt and converted to diesel. My problem is that smokes for at least 5 minutes on starting. I know this is totally normal but what can do to improve this?
 
Last edited:
It's overfueling. Does it really matter when it does this just when warning up. You'd kinda expect that anyway.
 
Landy_anna said:
I have a 1959 Series 2, that's been rebuilt and converted to diesel. My problem is that smokes for at least 5 minutes on starting. I know this is totally normal but what can do to improve this?
Click to expand...
You can improve black smoke by plugging the air supply and flooring it uphill ;) black smoke is typically running rich, likely from lack of air, or too much fuel, or the right amount but not enough air hitting the fuel, maybe from naff injection. For 5 minutes suggests its related to heat of the engine after cold, so possibly ignition related. What engine have you put in it? First thing to check id say would be air supply, filter etc. :)
 
If you are running a normal 2.25 diesel then start with checking the pressure that the injectors pop off at. They should be set at 130/135 bar, this is assuming you have access to a pressure setting pump. It is as simple as setting a tappet to adjust them. Do not rely on so called professional outfits to get it right, I have had a set of 4 vary from 120 to 165. Once this is done set pump timing as book with a dial indicator on number one exhaust valve fully open. If not perfect try advancing the pump about a millimeter at a time, be sure to slacken the unions on the pipes to injectors when moving the pump.
 
divie said:
If you are running a normal 2.25 diesel then start with checking the pressure that the injectors pop off at. They should be set at 130/135 bar, this is assuming you have access to a pressure setting pump. It is as simple as setting a tappet to adjust them. Do not rely on so called professional outfits to get it right, I have had a set of 4 vary from 120 to 165. Once this is done set pump timing as book with a dial indicator on number one exhaust valve fully open. If not perfect try advancing the pump about a millimeter at a time, be sure to slacken the unions on the pipes to injectors when moving the pump.
Click to expand...

Yes, pulling and testing the injectors, either yourself or elsewhere, can reveal all kinds of stuff.

Carbon blown up the injectors, no sealing washers, etc are visible on inspection. Testing can show completely knackered pintles, springs, or blown tips, pretty much diesel pouring out if you have all that.

I would have a check that the air supply wasnt blocked by a collapsed pipe or blocked filter, then have a look at the injectors.
 
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