My '88 1275 Mini also diesels sometimes when shutting down. I tried running some Seafoam de-carboniser spray into the carb and it seems to help...might need a second application. Also find that higher octane fuel is helping some (octane reduces fuel pre-ignition which gives "pinking" under heavy load; mostly needed by higher compression engines than our mini's). Let us know if the lower temp plugs help. Notice they are not resistor type. Are you running resistor plug caps/leads and/or rotor? Generally better to have resistance in the HT setup if running electronic ignition or other modern electronics in the car (like radios, phones, dash-cam's etc) as these will be affected by non-suppressed high voltage ignitions.
TornadoCAN99 Since recording this video I have decarbonised with Nulon Foaming Air Intake cleaner, after that the piston heads were cleaner. I ended up fitting the original plugs, but new ones. I have also changed the carb needles to M type instead of the richer AH2. When testing the emission gases with a exhaust gas analyser it is now in the correct range. I believe the carbon build up was caused by the richer needles. I have driven 250 km since those changes and I have not had any dieselling occur yet. I have only ever run high octane fuel, 98 unleaded. I must do some investigating with resistance in the HT.
I know this is a year out of date but, I always fill the filter with oil before installing. Dunno if it is necessary but I think anything to get oil to where it needs to be quickly as possible is not a bad idea
Good video, I don't have a Mini at the moment but this would come in usefull to any Mini owner. Thanks for sharing.
Thanks for the video, very handy 🤙
Great video , thanks a lot
My '88 1275 Mini also diesels sometimes when shutting down. I tried running some Seafoam de-carboniser spray into the carb and it seems to help...might need a second application. Also find that higher octane fuel is helping some (octane reduces fuel pre-ignition which gives "pinking" under heavy load; mostly needed by higher compression engines than our mini's).
Let us know if the lower temp plugs help. Notice they are not resistor type. Are you running resistor plug caps/leads and/or rotor? Generally better to have resistance in the HT setup if running electronic ignition or other modern electronics in the car (like radios, phones, dash-cam's etc) as these will be affected by non-suppressed high voltage ignitions.
TornadoCAN99 Since recording this video I have decarbonised with Nulon Foaming Air Intake cleaner, after that the piston heads were cleaner. I ended up fitting the original plugs, but new ones. I have also changed the carb needles to M type instead of the richer AH2. When testing the emission gases with a exhaust gas analyser it is now in the correct range. I believe the carbon build up was caused by the richer needles. I have driven 250 km since those changes and I have not had any dieselling occur yet. I have only ever run high octane fuel, 98 unleaded. I must do some investigating with resistance in the HT.
I know this is a year out of date but, I always fill the filter with oil before installing. Dunno if it is necessary but I think anything to get oil to where it needs to be quickly as possible is not a bad idea
I always do the same too, probably good to do as it will help to bring up the oil pressure.
@@CafeRacerLab Oh, sorry, I did not see that on the vid hence my comment