Big help needed pls

[bakes fq]

Hi , iv recentle fitted a bosch inline pump in the engine bay all wired up as it should and im running an automotive intank pump . last nite I went to get the car mapped , and come into a rite pickle , for some reson there was not enough fuel and kept running really lean when ever I layed on the boost , we had to keep stopping and trying new things to see if it changed or helped , we lifted the bosch pump under the bonnet up rite thinking it could have been running dry at some point in the angle I fitted it , but that dident help , we then thought mayb there wasent enough power goin to the bosch pump so we cut the wires and run it direct , but that dident help , but for some reson the fuel pressure reg is makeing a funny noise and the needed isent stable , seems to move up and down all the time when it's just idling , we thought if we run the fuel pressure reg at 5 bar it mite solve the problem so we went for another try , driving normal there is loads of fuel but as soon as u plant it it just runs well lean ... Do u think the reg is ****ed ? B4 I fitted the 2nd pump everything worked fine running 500 bhp ? Any help would be great

 

[RsvRob]

Vac leak to fpr?

 

[bakes fq]

Yeah we looked at all that but still the same , u can feel the flow of fuel running thorough the fuel line running in and the fuel line that runs back to the tank . Really confused , just seems ever since Iv fitted that second pump it seems tho the reg as started playing up . Fuel reg was fine and dandy b4 but when I started her up yesterday to take the car to get mapped I could hear that reg straight away

 

[Nath-t]

Have u changed fuel filters??

 

[bakes fq]

Ooww no I haven't is that a must ?

 

[Nath-t]

Heard it the last couple of weeks where people are having fuel filter problems... Worth a shot buddy... Make sure the intank one is clear and change the under bonnet one

 

[RsvRob]

Fpr fluctuation because the Bosch is trying to suck fuel in but can't..
Blockage of some sort..
I presume you have it setup-
In tank 2 Bosch 2 fpr 2 fuel rail !!

If the Bosch can't be supplied with enough fuel then in turn it can't provide enough...

 

[B6lee]

Try putting the standard reg back on. I'm still running mine and alot of people swear by them.

 

[bakes fq]

Iv been tolled today that I need a swirl pot to run the fuel pump set up Iv got , but it's strange cos so many people have run an in tank pump and a inline pump and that's it with no problems ... So confused

 

[B6lee]

Iv been tolled today that I need a swirl pot to run the fuel pump set up Iv got , but it's strange cos so many people have run an in tank pump and a inline pump and that's it with no problems ... So confused

No need for a swirl pot !

 

[bakes fq]

I dnt know what wrong with it then , Iv swoped over the fuel reg and still the same problem ( runs fine up until u want boost and it just runs lean like there's no fuel there ) Iv checked again the pumps r running ok . Just dnt know what to try nxt

 

[Nath-t]

Have u changed the fuel filters yet or not??

 

[bakes fq]

That's 1 thing I haven't dne . But problem all sorted now : ) thanx for all the input ... Feel stupid saying this but it turned out to be a fuse that wasent in to good on the relay hardwired to the intank pump ... But thanx again for the help ..

 

[bakes fq]

Where r the filters on the 9 ?

 

[RsvRob]

That's 1 thing I haven't dne . But problem all sorted now : ) thanx for all the input ... Feel stupid saying this but it turned out to be a fuse that wasent in to good on the relay hardwired to the intank pump ... But thanx again for the help ..

Tool lol

 

[bakes fq]

Lol . Fair comment : )