The IPS 500 uses the VP D6 engine
, and the fuel system bleed procedure is:
1. Open the bleeder valve found on the fuel filter
housing on the engine
. You can connect a short section of clear hose to the valve and run it into a container to avoid making a mess.
2. Repeatedly press the pump plunger on the top of the filter housing until air free fuel comes from the bleeder line, then close the valve and remove the clear hose.
3. Continue to pump the plunger another 12 or 15 strokes, pushing fuel to the high pressure fuel pump
and into the rest of the fuel system. This may have somewhat higher resistance, but that is normal.
4. Crank the engine with the starter and it should fire up. It is not normally necessary, and is not advised to crack the fuel lines at the injectors. The D6 has a common rail fuel system and the very high pressures in the rail and injector lines will purge air from the system. Plus, high pressure leaks
can be dangerous.