The accumulator holds pressure to prevent the fuel vapourising in the
lines when hot. Allowed to cool, this vapour condenses, if cranked, you
have to push all these bubbles through the injectors before it'll fire.
Martin
content22207 wrote:
If your accumulator diaphragm is leaking there won't be any residual
pressure. That's why car won't start hot (no pressure to crack
injectors). When cold engine is running off cold start valve until
fuel system pressurized.