Hi All,
Firstly, sorry for the long delay in reply, I've not had a lot of time to work on the car. And now I've had a disaster....
I took the car for it's annual MOT and while I was there I used the CO meter to set the car up to 2.5% CO at Idle. It was reading 4.7% CO @ 3000rmp
Having set the car up it then started running badly and would cut out and not idle until it was warm. Then it would run fine but with a higher idle of 1200rpm. Even just stopping for petrol would see it start running badly again and hunting a lot.
Checked the plugs:
I did some more adjustments to the mixture but could not stop it hunting so I re-fitted the pressure gauges.
Cold Control Pressure: 2.4
Warm Control Pressure: 2.8
I figured while adjusting the WUR the pin had span and but the bi-metallic strip at an angle: I was right:
Despite the damage to the heater element it was fine. Phew. I've glued it and it's OK.
So I rebuilt the WUR again and tested it....
Cold Control Pressure: 0
Warm Control Pressure: 2.8
Yep, ZERO cold control pressure.
So I stripped it and rebuilt it again with a new seal in the diaphragm.
Cold Control Pressure: 0
Warm Control Pressure: 0
Yep, no pressure now. I check system pressure and it still shows 4.2 so the gauge works. when I turn it off the pressure comes up to 1.2. Bck on and it drops to ZERO
I bled the lines while the pump was running to prove there was fuel flowing
I blew out all the connections and filters when it was in bits and proved there was no blockages.
I'm at a complete loss. I have no more ideas or things I can check and change. I can pay to have it rebuilt but that will take weeks and be £300 and I'm not sure what they can do that I haven't.
HELP, I'm at t he end of my tether!