General Misfire and smoke on start-up!

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General Misfire and smoke on start-up!

Redrum500

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Jan 8, 2010
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I have seen this posted previously but I thought I would revive debate (sorry). Twice this year when starting my 1.2 from cold (not freezing, 5 to 10°C) it has fired up smoothly straight away, then after about 2 seconds it runs rough for about 5 seconds with clouds of smoke from the exhaust and then all is OK. The car then runs perfectly for days with no recurrence and absolutely no smoke. The really worrying thing is that when it does this lumpy start the smoke looks distinctly like blue burning oil!

It is difficult to tell at the moment if it is oil being burnt, if it is then the level is going down very slowly but I guess it would if it was only doing it very occasionally. I plan to switch off and check the plugs for oiling next time it happens.

Is this a problem others recognise? I am very technically minded and know engines inside out but I can't think of a reason at the moment how a car could occasionally burn oil. Note; Luigi has only done 7000 miles

Welcome thoughts. Mark
 
Had this in a 106 (single-point injection) years ago. Can't remember the problem (sorry!) but it is important to get it sorted as unburnt fuel in the exhaust will destroy the cat.
 
My one does the same now and again.
It seems to only do it when I first park my car outside the garage and then later on park it up in the garage so the engine has only run for 20 secs then stops.
 
Interesting that you have experienced this RUI, my car is never in the situation where it is just started and moved a short distance like you describe, so there must be another reason. I always follow a ritual (maybe I need therapy) of always having a hot engine when I switch off. So if I park outside my garage after a drive and then leave it couple of hours I will have to go for another short drive before putting the car away in the garage so that it has a hot engine.

There is method to this madness. For every litre of petrol you burn you produce a litre of water, if the engine is nice and hot when you switch off the steam left in the cylinders and exhaust has a chance to dissipate. If the engine is cold when you shut down you have water in your engine and exhaust = corrosion!
 
Interesting that you have experienced this RUI, my car is never in the situation where it is just started and moved a short distance like you describe, so there must be another reason. I always follow a ritual (maybe I need therapy) of always having a hot engine when I switch off. So if I park outside my garage after a drive and then leave it couple of hours I will have to go for another short drive before putting the car away in the garage so that it has a hot engine.

did you used to own an Alfa with a twinspark engine? :)
 
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