Help needed!
I'm at the point of testing the fuel system. It'd be great to get some advice about how to go about this.
These are my thoughts so far: (note - all filling of tank and back to containers through Mr Funnel to remove any contaminants)
Test 1: From tanks to splitter
Visual inspection of all fuel lines from tanks to carbs.
Check of all quick release fittings to ensure engaged and open.
Check tanks to ensure no debris/insects/whatever.
Prepare aircraft (tyres to correct pressure, sitting level, towels on wing roots just in case of spill).
L + R fuel taps off.
Put an initial small amount (5 litres?) in each tank and check for any leaks from tanks to fuel taps.
Cockpit fuel tap off.
Turn L + R taps on and go under plane to check header tank fills correctly.
Check for any leaks from header to cockpit tap.
Disconnect line that runs from Rotax mechanical pump to the 5-way splitter. Put the end in a new bucket with litre graduation marks.
Turn cockpit fuel tap on.
Check that fuel drains with no leaks into the bucket and time it to get flow rate.
Test 2: To carb ends
As above, plus:
Increase amount of fuel to say 10L per tank (beware of bucket capacity while draining)
Connect line back to the splitter but disconnect the carb ends; drain to 2 buckets
Check for any leaks in the system - including in cockpit (line to fuel pressure gauge)
Test 3: Electric pump
Put 10L in each tank and open all taps.
Test the electric fuel pump - measure flow to the buckets.
Check that fuel is being delivered evenly to each carb end.
Test 4: Fuel pressure gauge
Reconnect carbs.
Put 10L in each tank and open all taps.
Check that the fuel pressure gauge on the panel is registering pressure.
Test 5: Full tanks
Top tanks to full (without spilling)
Check for leaks throughout entire system
Check fuel pressure gauge
Drain from header drain (lowest point in system) to fully drain.
Any thoughts? What am I missing? Is the testing order right? Are there other tests I need to do?
Is the full tank test really necessary? (Just thinking - that's 77 litres of petrol, and both our cars are diesel...)
All assistance gratefully received.
Cheers, Marty