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--- blog:escort:work:lift_pump [2024/08/04 17:56] – [Overview] john
+++ blog:escort:work:lift_pump [2024/08/04 18:31] (current) – [Overview] john
@@ Line 5: / Line 5: @@
 ==== Date ====
-Work took place mainly throughout July 2024.
+Work took place mainly throughout July 2024 and finished August 4th 2024.
 ==== Parts ====
@@ Line 37: / Line 37: @@
 In the modified design we added a low pressure, high flow lift pump (Facet 480532E, 6-8PSI, 170 litres/hour) filling a 1.5 litre swirl tank, and the (replacement) injection pump then pulling from there.
+{{:blog:escort:work:lift_pump:img20240725151959.jpg?400|}}
 The theory is that the injection pump then always has a constant source of fuel to pull from, so should not be damaged by occasional fuel starvation under acceleration or cornering. Since the Facet pump is literally just filling the swirl tank which then overflows back to the main tank, it requires very little effort and thus should not be overworked.
 {{:blog:escort:work:lift_pump:fuel_system_swirl_tank.png?700|}}
+In addition to the main diagram above, a small toggle switch was added in the +12v IGN Live line (and mounted under the dashboard) to the low pressure pump relay, in order that the constant pump running could be switched off whilst electric/diagnostic work was being undertaken that didn't need the pump constantly running (which would be needed in normal operation).
+==== Outcome ====
+So, does it work? __Yes__, the car now starts and runs again. The car drives much more smoothly (but is still not perfect) and will now build boost when accelerating from 2nd to 3rd gear - showing approximately 0.7Bar on the boost gauge; something we had never been able to achieve previously.
+The next steps are to revisit the fuelling setup - attach the wideband O2 sensor from AEM again - and recheck the base CO% / fuel trim% of the ECU, and adjust the idle screw. We don't have a working ISCV control (since the aftermarket parts are junk and don't work), so setting the idle is a compromise to get a stable idle whilst cold, vs not too high when warm.