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Location:
Brisbane
Registered:
June 2003
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MKII smoke puff on ignition ?
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Sat, 16 August 2003 09:56
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 Large puff of smoke from exhaust on ignition... Ceases less than 3 - 5 seconds...
Fnked timing ?
Just had fuel injection rebuilt..
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Location:
Brisbane
Registered:
February 2003
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Re: MKII smoke puff on ignition ?
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Sat, 16 August 2003 13:43
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does it run OK afterwards? if so, maybe the startup (cranking) fuel settings are way off - is the smoke black (fuel) or blue/white (oil)?
The MegaSquirt EFI (that i'll be using soon) has priming pulse to the fuel pump on igntion key to on - and it starts injecting with an enriched fuel mixture when cranking starter motor- and stays enriched until revs hit user-defined point (e.g. engine running) - if that''s too high, you run very rich until the ECU works out you are not trying to start the engine. That kind of problem might produce a bit of smoke.
Does the manual for your ECU say anything about startup settings?
Charles
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Location:
Brisbane
Registered:
June 2003
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Re: MKII smoke puff on ignition ?
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Sun, 17 August 2003 02:23
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ECU - standard.. 84 supra..
Smoke colour - Blue (oil)..
Id say the problem will have something to do with the crank timing / rich mixture.. Once it hits idle rev level the smoke puff has dissapeard...
I havent got around to changing / checking spark plugs + distributor yet - could this be the cause + bad engine timing.. i dont think its had a proper workshop tune in 10 years so maybe it would be a good idea, correct ?
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Location:
Brisbane
Registered:
February 2003
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Re: MKII smoke puff on ignition ?
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Sun, 17 August 2003 02:33
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maybe your valve guides leak a bit of oil down the valve stems after shutdown - and you burn it off during startup, or ... your intake manifold has too much oil vapour condensate inside it from the crankcase breather and some of it gets inhaled and burnt during startup?
oil smoke has to come from oil, not fuel?
dunno - maybe a quick birthday in a workshop might help 
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: MKII smoke puff on ignition ?
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Sun, 17 August 2003 03:26
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Valve stem seals. They will be petrified. Replace them.
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