Vehicle & Technical > Discovery
Black smoke?
datalas:
--- Quote from: "muddyweb" ---There are some funky ways to negate turbo lag.. but they are all quite expensive ;-)
--- End quote ---
So blowing down the snorkel doesn't work then ?
well, there goes my reasoning for sticking my head out of the window :D
muddyweb:
--- Quote from: "jnoshea" ---Thanks Tim, that makes perfect sense to me. Also explains why the car only smokes under exactly the conditions that you described. The rest of the time its fine after the initial startup. What causes the (smaller) plume of smoke when I first turn the engine over? Is it also unburnt diesel or is it oil?
--- End quote ---
Depends on the colour. If it is black, then it's pretty much the same thing... the engine turns with fuel going in and it doesn't all spark up straight away..
If it is blue, then it is likely a seal or ring just weeping a bit but as long as it all goes away, then it's not really anything to worry about.
muddyweb:
--- Quote from: "datalas" ---So blowing down the snorkel doesn't work then ?
well, there goes my reasoning for sticking my head out of the window :D
--- End quote ---
Well... I was thinking more along the lines of multi-turbos or variable-geometry turbos..... but I see an experiment coming on :-)
simondarby:
I have to say that since I had the Allisport intercooler fitted and the EGR removed, the car has been smoky. Exactly as described earlier under turbo lag. I have wicked back the smoke screw 2.5 turns which has improved this slightly. I may turn it back a little further though I am not sure this will improve things too much. It passed the MOT in July with no trouble so I suppose I shouldn't worry too much, though I hate pumping out clouds of smoke...
My centre silencer has started to rattle so I am looking to replace with a straight through system (maybe stainless). I am going to the LRO show in Malvern at the end of August so there maybe a special deal to be had then (I hope!)
MZ6666:
DOES A NON-CAT EXHAUST NOT FAIL THE MOT IF YOUR VEHICLES AGE REQUIRES A CAT?
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