I remeasured all the pressures again after blowing the return line with compressed air.
Temperature in the garage was 13.5 C (Its already cold in Calgary
)
Here are the pressures.
First disconnected WUR Electrical connection.
System Pressure: 5.4 Bar
Cold Control Pressure with WUR electrical disconnected: 0.6 Bar
After about 30s, reconnected the WUR electrical connection and watched the pressure rise
Time (min) Pressure (Bar)
0.0 0.6
0.5 0.6
1.0 0.9
1.5 1.2
2.0 1.5
2.5 1.7
3.0 2.2
3.5 2.9
4.0 3.4
4.5 3.6
5.0 3.6
So my cold control pressure is very low, from the charts should be between 1.6 and 2.0 Bar.
Here are the residual pressures.
Time (min) Pressure (Bar)
0.0 3.2
0.5 3.0
1.0 2.8
1.5 2.7
2.0 2.5
3.0 2.2
4.0 2.0
5.0 1.9
10.0 1.7
15.0 1.7
20.0 1.65
I think my first control pressure test posted before was incorrect. I had the electrical connection to the WUR connected and I was measuring hot control pressure instead.
I first plan on removing one shim from the fuel distributor and recheck all the pressures. If I understand the system correctly this should not affect the cold control pressure. But it should drop the system pressure.
Next, remove the WUR and try to push the pin outward. I am not sure if I want to drill and tap a screw into it or open the WUR and push it out.
Am I going in the right direction or is there anything else I should check first.