Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing 1973 +8, exhaust fumes in cabin

I did two things today: 1) A bit embarrassing but the carb pots needed damper oil, one of them was almost empty. I filled both up to approx 1-1.5 cm below the top with SU carb damper oil. I should have attended to this as first thing, as I have owned many sports cars with SU carbs during the years. 2) The sealing around the air intake for the heater is missing, which means air is sucked into the cabin from the engine bay. I temporarily blocked the intake with a clean rag. 3) On both carbs, at idle I pushed up the Lifting pin, which rise the piston and there was no change to the engine rpm, which I take as the mixture is ok. It's also in line with the colour of the spark plugs - coffee latte. Tomorrow I will make sure that the choker is activated equally on both carbs and importantly, fully deactivated on both carbs when not using the choker function. The result is that there are no excessive fumes in the cabin as far as I can judge, except the usual "Old British car" slightly oily smell. So, hopefully it has been rectified, the ultimative test will be wifes judgement ...
And Heinz, you may very well have a point there. I haven't been driving a +8 with side exhaust, but in theory it would be better with both a one side. That's what I'm going to have on our Austin Healey 3000 BN7 2 seater that we are restoring at the moment.