Hi Joe,
Feeling a bit better thanks. Good enough to start thinking about doing 'stuff' again. I managed to drag my sorry ass out of bed yesterday and do a bit of light bead blasting. Probably the very last lot I ever have to do thankfully. Rats and mice of the engine bay. Even half an hour in front of the machine really tired me out but a good sense of satisfaction in actually doing something constructive. I was driving myself crazy.
I have been carefully working on all the very very light stuff that isn't going to compromise my recovery. Decided to tackle the cold start valve mechanism first.
After stripping it all back I discovered that the main inlet fitting has a very very fine gauze filter on it. By the looks its actually two butted up against each other. Trying to blow through mine it was almost entirely blocked. I have no idea how the car started so well with this restriction and am picking it may be something which causes a great deal of issue with in other cars.
I soaked it in solvent for 24 hours and then went to work with the air gun for an hour or so. The net result was that its much much less restricted now but there is still some resistance to blow air through with your mouth. I am now of the opinion that this is normal. I would be interested in any ones comment or experience with this. Given it worked before and I have improved things I am picking I wont hit any more snags.
I am going to put this fitting with all the other gold electroplating stuff as it could further block or restrict the gauze filter. I will just tickle it up with my gold paint and reinstall.
Tested the old solenoid and all is good there so just a cosmetic and protective coating should see it right for the next 20 years. Looks good as new now.
I also bead blasted the main CSV plate. Before I started I masked up all the inlets and outlet point to avoid getting media in the guts of it. Can imagine that would cause all sorts of grief.
Before I put it back in the car I am going to fully test the assembled unit under pressure with fuel to ensure there are no leaks or blockages. I have a spare delivery pump off an old 108 so will jerry rig this up.
Feels good to be posting again