hot start problem

[cal928]

have been using my 79 (Kjetronic FI) as a daily driver the past few months. It just started to have a hot start problem (engine turns over but does not get gas) on restart. when completely cool, starts fine.
checked at fuel pump and do not have voltave when this occurs. suspect relay??
the wiring diagram illustrates some device on the solenoid at 15 and 31b.
the 31b shows it goes to Z4. what /where is Z4???
any other ideas?

[MPDano]

Check that Fuel Accumulator in the Fenderwell. Known issue for Hot Start problems.

[lfausty]

your color/bundle of plugs on bottom of fuse panel are the lettered plugs youll see letters on side of plug once ones removed left a - z right . temp sensor 2 on waterbridge 82 us- not sure on urs, theres a test...

fuel pressure regulator , fuel dampners. fuel inj, raw fuel seeping through or clogged
check valve on fuel pump.