7 replies to this topic

[Neily.M]

Hello,

I'm having a high emissions problem with my 92 SPI.

I replaced the air intake temperature sensor & cleared the fault but it came back but I can't believe that would cause the emissions to be around 10%.

I have checked the vac lines & the fuel trap & they're fine.

The car starts every time & idles well but it's quite smokey at times. The car also drives well & doesn't hesitate.

I have attached some data from my Rovermems reader & was hoping to get some advice if possible please?

Could the ECU be faulty?

Thanks 😊

Attached Files

•  Screenshot_20241122_155949_Rover MEMS.jpg   22.77K   4 downloads
•  Screenshot_20241122_155642_Rover MEMS.jpg   30.45K   4 downloads

[68+86auto]

What are the emissions readings?

[Neily.M]

CO is around 10%

[sonscar]

If it is smokey as you say then you should fix this first.EFI engines also suffer from all the other maladies as carb engines.Steve..

[Cooperman]

How many miles has it done. You may simply have an engine with a lot of bore/ piston wear.
I had to rebuild an MPI engine which had done 92,000 miles and would not pass the MoT due to emissions. A re-bore with new pistons cured the problem completely.

[Neily.M]

The engine was rebuilt in 2020 & has only done around 3,000 miles since then.

Can you see anything in the Mems data that may point to the cause?

[sonscar]

When it was rebuilt and how many miles it has is not a good indicator of its condition sadly.Steve..

[Neily.M]

Ok, thanks, does anyone know of a reputable Mini specialist in Hampshire?