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#1
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Puffs of black smoke
I am getting puffs of black smoke on my 82 300d turbo at red lights . It does not happen if I drive like grandma, but appears after higher speed travel. Should I start looking at the ALDA system? It was given a valve job circa 5000 miles ago. The mechanic said there was some slop in the timing chain.
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#2
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It is a diesel, they tend to do that when over fueled or under load
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#3
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This happens when you take off from the lights correct?
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1987 VW Jetta Mk II - Daily Driver 1992 W201 2.3 - sold 1985 W126 380se - sold 1985 W123 OM617.952 - sold 1981 W123 OM617.912 - sold 1986 W201 2.3 - sold 1979 W123 OM 617.912 - sold |
#4
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Smoking.
No. It is smoking at idle. Puffs of smoke waft past me when it happens
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#5
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Black smoke tends to means more fuel less air (fuel is richer). If your ALDA has not been touched, then start at the basics... Check for timing chain stretch, injector pump timing, and etc. Or if your ALDA has been touched, then adjust it back in by 1/8th turn increments clockwise to make it leaner and see if improvement in the smoke.
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1983 123.133 California - GreaseCar Veg System |
#6
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Smoking
No I haven't touched the ALDA. Since it does not do it tooling around town, only after getting off the freeway or hard city driving, I thought it may have to do with the fuel mixture when the turbo is running staying rich once the rpm's decrease. Please advise.
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#7
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Bad injector(s)? Does it idle rough? Fuel consumption up? If you have a bad nozzle, you can burn a piston, watch for black smoke above idle.
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Gone to the dark side - Jeff |
#8
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Quote:
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2004 Infiniti G35 3.5L 6mt Coupe 73K miles 25.6mpg ytd 2001 Green Audi TT 225 AWD Roadster 71K 6sp 30.9mpg >>STOLEN<< 1982 300D Turbo 231K 120hp? 28.1mpg YTD |
#9
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Again, cover the basics first... Check air filter (make sure it is not clogged), Check timing chain stretch (your mechanic stated there is slop in the chain), check the valve lash (it may have changed after the breakin of the valve job) and check the injector pump timing. If your injectors are still original after the valve job or even if you haven't done this yet, pop check them and have the spray pattern checked. Also I would look at your turbo, make sure it is not ingesting oil and it spins freely.
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1983 123.133 California - GreaseCar Veg System |
#10
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Quote:
It may also be that your 5,000 mile ago Valve Job now needs the Valves adjusted due to them seating in. While the Valve cover is off take a good look at the Valve Stem Seals; maybe one is loose.
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84 300D, 82 Volvo 244Gl Diesel |
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