i have same kind of thing happening
fuel pump leaking

no accumulattor fitted

incorrect fuel prrssure regulator fitted

main fuel lines damaged insecure and rubbing on steering rack

steel fuel pipe rubbing on axle and starting to leak

incorrect fuel pipes fitted around pump

fuel leaks around injectors

injector pipes to metering head leaks

can you catch your hat i found all this out because car is now cutting out when getting hot