Pinking with no codes...

[ExMX5owner]

I'm stumped, pinks badly under heavy throttle in low revs, It never used to...What have I missed...

 

[AntStark]

Duff spark plug or an O2 sensor on its way out?

 

[Zephyr]

Get some live data from your scanner. it will give you a path to follow.
what scanner do you have.

 

[Nodzed]

Different car and there are lots of other areas to check first but I had this on my Z4 Alpina, pinking under torque load. Took ages to track down, turned out to be head gasket failure between cylinders 4 & 5 causing combustion gases to leak between them, there was no fluid contamination issues.

 

[ExMX5owner]

Get some live data from your scanner. it will give you a path to follow.
what scanner do you have.

Foxwell 510 NT, Its never failed me, that's why I,m stumped.. No path to follow at this point.. But as I write this I realize that my wife was the last to put fuel in it. . I will investigate.

 

[Zephyr]

I would go to live data menu, create a custom list containing trim levels, co2, spark and advance and record a small ride.
then check whatever values seem off scale and proceed from there.
(or - and this is a pro tip - get an MX5 and stop bothering with old cars )
just kidding…

 

[ExMX5owner]

I would go to live data menu, create a custom list containing trim levels, co2, spark and advance and record a small ride.
then check whatever values seem off scale and proceed from there.
(or - and this is a pro tip - get an MX5 and stop bothering with old cars )
just kidding…

Well, here you go, wifey says she doesnt know what she put in it, I found the docket, it was 91, My Mx5 used to dislike 91 as well, same symptoms.. Just as well it wasn't diesel hey... Ill run this tank out and see what happens next fill. Fingers crossed, I,m hoping that is all it is. Just when the weather has improved...

 

[t-tony]

I would only run down to half full and then fill it with the "good stuff".

Tony.

 

[ExMX5owner]

I would only run down to half full and then fill it with the "good stuff".

Tony.

What, beer ?..

 

[ExMX5owner]

I would only run down to half full and then fill it with the "good stuff".

Tony.

Actually mate , I think your onto something, another drive today and aside from the pre-det. I think it,s legs are better than running on 95 or 98..So I should be aiming at 93 or 93 and a half... But then, what do I know about performance tuning....

Of course there is always the beer option, but my missus reckons that would throw it into limp mode, whatever that means...

 

[the Nefyn cat]

my missus reckons that would throw it into limp mode, whatever that means..

Is there something you'd like to share with the group?