Technical Twin Air misfire after oil change ?

[Tropicalmike]

I have just carried out an oil and filter change on a 64 plate twin air 105 at 35000 miles. We have had the car for 7 months. I have now had a couple of issues with a misfire and engine warning light coming on and the Start-stop unavailable showing . However , the first 3 journeys of about 4-5 miles each after the oil change there was no problem . I managed to clear the engine warning light and clear the start-stop light by stopping and re-starting the engine and it has then run OK after 10 seconds of revving it up.

The engine was fine before the oil change but has always had a little stutter in first few seconds on first starting with a cold engine .

It seemed too much of a coincidence that the problem only started after changing the oil and knowing how important the oil is for the Uniair unit.

I have checked with the Multiecuscan and it has logged the faults as below.

I trawled through other forum threads on this topic area for ideas and can confirm the engine has had and 0-30W oil before and again at this oil change after only 5k miles . I have used Miller oil that I have also used in another twin air and it has been fine. I have also carried out the oil change reset in Multiecuscan . But what I haven't done is check the oil filter for the Uniair unit. Can anyone tell me where it is , or a photo please. I think if it was a spark plug / coil pack issue it wouldn't just disappear on a re-start or when the engine is warmed up. The spark plugs have only done 5k miles. But I will swap over the coil pack plugs and see if I can move the fault .
Anyone got any ideas, constructive suggestions

Thanks in advance

 

[Tropicalmike]

Interesting video. Maybe if I had changed the oil in my TA when it still had it's 3 month warranty and the Uniair had played up I could have had an analysis done and claimed on the warranty. Especially if it proved they put the wrong oil in. Not sure what brand of 0W30 they used in the video but if their engine now has an issue I think the warranty might be invalidated. They certainly were not aware about the Uniair and critical oil.

 

[varesecrazy]

Had this exact issue a few years ago. Tried replacing coils, plugs even the front O2 sensor but to no avail. Noting that there was an Alfa service bulletin to no longer do the oil reset (reference to which I think I found via an Alfa forum), I concluded the reset had somehow crystalised the issue of a failing UniAir unit. But we moved the car on via a famous car-buying service so can't confirm a solution.

I have serviced many TwinAirs since without doing the oil reset, without issue.

Sorry if that isn't good news - somebody like Small Car Services may have a more expert view (seem to be one of the few professional independent Twinair experts).

Thanks for confirming

 

[GettinBetter]

Turned off when I saw that he hadn't cleaned all the rust from a leaking radiator expansion tank.. When doing such a major job IMO, it was an ideal opportunity to remove that mount and clean the whole engine bay. Looks like a typical slap it back together for YT clicks.

 

[The Panda Nut]

Odd isn't it,

One basic question. Is the oil pressure light going out ok

(just wondering if the new filter is restrictive.. And the Uniair cannot get a workable oil pressure)

I wonder and suspect, the issue is te oil filter itsself. Having seen the fit of two variants in mine and the two / three o rings. Its possible sometning here could be the issue. I woulf try another new oil filter first.