[ngoma]

WOT = Wide Open Throttle. Holding WOT while cranking is an effort to get more fuel thru the system to purge air faster.

What's the best way to bleed air form the fuel system?

It depends on what tools and materials you have available, and your budget.

1.Temporarily plumb a low pressure (3 - 5 PSI) fuel pump upstream of the fuel filter. More PSI than that risks blowing out the IP seals.

2. Plumb a fuel priming bulb (commonly found on boat outboard motor tanks) upstream of the fuel filter. This priming bulb can stay there indefinitely without problem, which can be helpful for future system priming needs, i.e. fuel filter replacement or run out of fuel scenario.

3. Temporarily attach a Mityvac to the IP return hose. Pull vacuum until fuel flows without bubbles.

4. Simply cranking engine. Limit to 10 - 15 second bursts to avoid melting starter. May take several minutes. May not work if IP internal lift pump vanes are stuck, or if IP main shaft seal leaks.

5. Temporarily plug fuel tank breather tube, stuff compressed air hose into tank filler with a rag and inject air into tank to force fuel thru the IP. Probably works better to also disconnect the IP return fuel line and plug the section running back to tank.

6. Tow car in gear around the block. Works, but obviously only works on manual transmissions.