Slow things.

Put key in, press start button ASAP, engine splutters into life, coughs
a few times and stops.

Turn ignition off, turn back on, wait a few seconds, hit starter button,
engine cranks a few times and then starts, and then chucks out a load of
oil smoke.

I've had this happen to me on the Porsche, just happened on the ZX10,
and also happened to the Suzuki VStrom, all injection engines, all have
ECUs with in-built immobilisers, all have cats that I bet the ECU is
programmed to protect.

I phoned the garage for help when the Boxster did it as it just wasn't
starting, they said "keep turning it over, it'll sort itself out" and it
did after about 20 seconds, turned on 1 cylinder, then 2nd, 3rd, etc.
Clever little diagnostic routine.

Cause : in all cases I didn't wait for the ECU to do its power on
initialisation before I tried to start the engine. I can understand that
bit, the ECU doesn't get a chance to read any of the sensors, so
probably just tries to start it with the defaults of a normal hot
engine, which obviously doesn't work and it dies. (and then ECU then
goes "oops, I'm going to set diagnostic mode next time I start" which is
why it takes a bit to start next time, ~20 secs+ in the case of the
Porsche)

What I'm guessing about is how the oil gets sucked into the combustion
chamber? ECU thinks somethings wrong because engines mis firing like mad
and exhaust gasses are way out of spec, turns off fuel and ignition
(don't know if they can turn off the hydraulic valves too?), so vaccum
builds up in cylinder and sucks a little bit of oil past the
piston/rings?

Anyway, I must beat my brain into remembering to "Let the bloody rev
needle do its flick up and down fully before hitting starter button, it
does it for a reason!"


--
fragmented

fragmented wrote:
> Slow things.
>
> Put key in, press start button ASAP, engine splutters into life, coughs
> a few times and stops.
>
> Turn ignition off, turn back on, wait a few seconds, hit starter button,
> engine cranks a few times and then starts, and then chucks out a load of
> oil smoke.
>
> I've had this happen to me on the Porsche, just happened on the ZX10,
> and also happened to the Suzuki VStrom, all injection engines, all have
> ECUs with in-built immobilisers, all have cats that I bet the ECU is
> programmed to protect.
>
> I phoned the garage for help when the Boxster did it as it just wasn't
> starting, they said "keep turning it over, it'll sort itself out" and it
> did after about 20 seconds, turned on 1 cylinder, then 2nd, 3rd, etc.
> Clever little diagnostic routine.
>
> Cause : in all cases I didn't wait for the ECU to do its power on
> initialisation before I tried to start the engine. I can understand that
> bit, the ECU doesn't get a chance to read any of the sensors, so
> probably just tries to start it with the defaults of a normal hot
> engine, which obviously doesn't work and it dies. (and then ECU then
> goes "oops, I'm going to set diagnostic mode next time I start" which is
> why it takes a bit to start next time, ~20 secs+ in the case of the
> Porsche)
>
> What I'm guessing about is how the oil gets sucked into the combustion
> chamber? ECU thinks somethings wrong because engines mis firing like mad
> and exhaust gasses are way out of spec, turns off fuel and ignition
> (don't know if they can turn off the hydraulic valves too?), so vaccum
> builds up in cylinder and sucks a little bit of oil past the
> piston/rings?
>
> Anyway, I must beat my brain into remembering to "Let the bloody rev
> needle do its flick up and down fully before hitting starter button, it
> does it for a reason!"

It beats pressing the tickler button on both carbs until petrol pours
from the overflow
after remembering to remove the bath plugs from the bellmouths before
pressing
the starter button. :-)

--
Eiron.

fragmented <(E-Mail Removed)> writes:

> Slow things.
>
> Put key in, press start button ASAP, engine splutters into life, coughs
> a few times and stops.

Do they display Windows Vista logos when you're booting the car?

> What I'm guessing about is how the oil gets sucked into the combustion
> chamber?

Unlikely, I'd day.

> ECU thinks somethings wrong because engines mis firing like mad
> and exhaust gasses are way out of spec, turns off fuel and ignition
> (don't know if they can turn off the hydraulic valves too?),

Nope.

> so vaccum
> builds up in cylinder and sucks a little bit of oil past the
> piston/rings?

I'd doubt that. Past the valve guides, possible. But if it sucking via
the rings you might want to let some air into the engine at one point
.


--
Morini Corsaro 125 | CB450K4 | XL250 Motosport | 900SSD | R1150RT
Laverda SF2 | Harley FXD BOTAFOF #33 TWA#10
The UKRM FAQ: http://www.ukrm.net/faq/index.html
"Je profite du paysage" - Joe Bar

'Eiron' wrote...>
> fragmented wrote:
> >
> > Anyway, I must beat my brain into remembering to "Let the bloody rev
> > needle do its flick up and down fully before hitting starter button, it
> > does it for a reason!"
>
> It beats pressing the tickler button on both carbs until petrol pours
> from the overflow
> after remembering to remove the bath plugs from the bellmouths before
> pressing
> the starter button. :-)

Heh, yes its a definite improvement over doing that

Bath plugs in the bellmouths? Is that to stop dirt or insects or mice?

--
fragmented

'Timo Geusch' wrote...>
> fragmented <(E-Mail Removed)> writes:
>
> > Put key in, press start button ASAP, engine splutters into life,
coughs
> > a few times and stops.
>
> Do they display Windows Vista logos when you're booting the car?

If *any* vehicle showed a Microsoft logo that looked a bit XP or Vista
like I'd run for my life!

(I know quite a few use MS Embedded, but one has to hope they've done
the beta testing *before* releasing it, unlike Windows)

> > What I'm guessing about is how the oil gets sucked into the
combustion
> > chamber?
>
> Unlikely, I'd day.

Well it was definitely blue/white oil smoke, so its oil, and its being
burned off.

Perfect now, let it cool down, start it (properly), not a trace of
smoke.

> > (don't know if they can turn off the hydraulic valves too?),
>
> Nope.

Maybe the ECU shuts the secondary throttle butterfly as well as cutting
off the fuel, that will create a nice vaccuum in the chambers?

Haven't a clue really

--
fragmented

fragmented wrote:
<snip>
>
> Cause : in all cases I didn't wait for the ECU to do its power on
> initialisation before I tried to start the engine. I can understand that
> bit, the ECU doesn't get a chance to read any of the sensors, so
> probably just tries to start it with the defaults of a normal hot
> engine, which obviously doesn't work and it dies. (and then ECU then
> goes "oops, I'm going to set diagnostic mode next time I start" which is
> why it takes a bit to start next time, ~20 secs+ in the case of the
> Porsche)
>

That would be *really* dumb IMHO. The Sprint simply will not turn the
starter motor until it's ready. Why on earth would they let a potential
situation like describe be possible?


--
Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3
Tyger, Tyger Burning Bright (Remove rust to reply)
116 Giulietta 3.0l Sprint 1.7 145 2.0 Cloverleaf 156 V6 2.5 S2
Triumph Sprint ST 1050: It's blue, see.
www.cuore-sportivo.co.uk

fragmented wrote:
> 'Eiron' wrote...>
>> fragmented wrote:
>>> Anyway, I must beat my brain into remembering to "Let the bloody rev
>>> needle do its flick up and down fully before hitting starter button, it
>>> does it for a reason!"
>> It beats pressing the tickler button on both carbs until petrol pours
>> from the overflow
>> after remembering to remove the bath plugs from the bellmouths before
>> pressing
>> the starter button. :-)
>
> Heh, yes its a definite improvement over doing that
>
> Bath plugs in the bellmouths? Is that to stop dirt or insects or mice?

Rain, while your café racer is parked outside the café.

--
Eiron.

fragmented <(E-Mail Removed)> wrote:


>Bath plugs in the bellmouths? Is that to stop dirt or insects or mice?

In the case of some bellmouths, it was to stop dogs and small
children...
--

Fr. Jack

Life is short and love is always over in the morning.

In communiqué <(E-Mail Removed)>, Fr Jack
<(E-Mail Removed)> cast forth these pearls of wisdom
>fragmented <(E-Mail Removed)> wrote:
>
>
>>Bath plugs in the bellmouths? Is that to stop dirt or insects or mice?
>
>In the case of some bellmouths, it was to stop dogs and small
>children...

Also a surprisingly effective primitive anti ****wit theft device. See
my posting a while back about my old AJS 16C.


--
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| Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" |
+----------------------------------------------------------------+

Eiron <(E-Mail Removed)> wrote:

> > Bath plugs in the bellmouths? Is that to stop dirt or insects or mice?
>
> Rain, while your café racer is parked outside the café.

ITYM 'broken down in Wales'.


--
BMW K1100LT Ducati 750SS Yamaha XTZ660 Tenere Honda CB400F CB250N SH50
chateau dot murray at idnet dot com
"What you're proposing to do will involve a lot of time
and hassle for no tangible benefit."