ill_will

So. Despite a fair amount of work, the alfa failed its MOT today. The NSF caliper was binding, so i removed and rebuilt it yesterday. It now does not bind. However, my attempts to bleed the brakes were obviously not 100% successful, so there's a brake imbalance: hence the failure for this and a RHD headlight on one side which I've now rotated to make it legal (I hope.)

Advisory was issued for tyres being near the limit and for it running rich. I've colourtuned it now so it should be better.

Annoyingly, I don't think the various carb stripdowns/cleans have worked - the idle mixture adjuster on cylinder 4 is still a fair way further out than the others in order to get the cylinder firing at idle at the correct mixture on every stroke (seen using a colourtune.) My distributor is still not advancing properly too - suspect the springs. It wasn't advancing enough so I tried reducing the inertia weight spring preload, but now it's still not advancing enough and is all over the shop at idle. Stripdown time, and new springs.

I've tried spraying a fair amount of WD40 around the manifold to try to determine if there is an air leak, and listened using a stethescope, but I really don't think I can hear one. Carb cleaner in through the intake whilst it's idling? Switching the idle mixture adjuster screws to see if they're damaged? I'm out of ideas.

will