93 Octane

V6 (possible fuel issue)

Trying to diagnos possible fuel issue. Hpfp? Rail pressure....no check engine light. Some inactive codes for Bov jammed and fuel high pressure on enabling injection:pressure too low....codes come and go. Symtoms include hesitation at cold start and fuel cutting out sometimes at high rpm.(4500-6500rpm) 2bde 2bf0 2c90 Ambient temp: 48f