fuel pump feed from tank?

[SCHWARTZ]

I have run a 12mm fuel hose from the tank to the pump in the usual manner but being larger it seems to be getting crimped somewhere along the way. Is there any other way of running the feed with out having the pump in the boot? I may be putting the rear seats back in at some point so some solution that would not effect this would be best:D
What is the small hose that runs across the sender and tees off to the sender? as this is also getting in the way:rolleyes: thanks in advance for any help guys;)

[James5]

I have run a 12mm fuel hose from the tank to the pump in the usual manner but being larger it seems to be getting crimped somewhere along the way. Is there any other way of running the feed with out having the pump in the boot? I may be putting the rear seats back in at some point so some solution that would not effect this would be best:D
What is the small hose that runs across the sender and tees off to the sender? as this is also getting in the way:rolleyes: thanks in advance for any help guys;)

Gary, I managed to fit 12mm id pipe when I sued the cossie pipe in mine, the best way I found was to loosen the fuel tank bolts so you can get some more movement in the tank for the pipe to squeeze down and the other pipes with the T you tal about are part of the breather system

[SCHWARTZ]

Cheers matey I have got it to the pump and all seems fine but when I rev it and let off quickly the fuel pressure dosnt rise quick enough and it dies so im thinking some kind of restriction. Cutting that small breather pipe and extending it may free it up a bit tho. Il try that first.:rolleyes:

[Dave Reed]

tbh i wouldn't of thought the fuel pressure would rise by just reving.. They r more constant fuel injected car.. What have u done to the return? Is that the same size?

[SCHWARTZ]

Nothing has been done to the return. Im sure it used to rise a lot more than it does now but could be wrong :rolleyes: The only difference is a rising rate adj reg and a 044 pump.

[5teve L]

Hmm, have you checked how much pressure you are getting to the injectors mate ?

[SCHWARTZ]

how do i do that, Gauge before the injectors i guess? If i set to 3bar with just the pump running but engine not, when the engine is running it drops to just over 2bar, It used to drop less but the injectors being bigger now makes sense. In the volvo manual it says to have the fuel pressure set at 3.5bar at idle does this seem about right?

[Dave Reed]

you are disconnecting the vac hose when settin the fuel pressure aren't u?

[SCHWARTZ]

:ashamed: No should i be:laugh: the reg works on boost pressure not vac tho dosnt it??:confused:

[Dave Reed]

:ashamed: No should i be:laugh: the reg works on boost pressure not vac tho dosnt it??:confused:

It does yes, but to set them on idle you would normally pull the vac hose :) i say this but i've only ever adjusted cossie ones, so it could b a load of bull on a volvo lump, i'm sure someone will put this right Haha

[SCHWARTZ]

il set it with no vac hose and see if its any different than with:D

[Dave Reed]

il set it with no vac hose and see if its any different than with:D

Hw are you monitoring what you're setting it too if you dont no your fuel pressure?

[SCHWARTZ]

I have a gauge on my fpr but steve was on about injector pressure, Isnt that something different?

[5teve L]

I have a gauge on my fpr but steve was on about injector pressure, Isnt that something different?
No I meant pressure to the rail mate, after the FPR :)

[Dave Reed]

I would of thought that the standard volvo injector rail would have a shrader (spelling) fitted to it anyway, which is a great place to get the rail fp from ;)

[SCHWARTZ]

now im :confused: after the fpr would be the pressure of the fuel returning to the tank:scratch: the gauge on the fpr reads the pressure of fuel going to the injectors.

[SCHWARTZ]

my rail is not standard only slightly modded to take adj fpr.

[Dave Reed]

in that case just disconnect the vac pipe and adjust the fuel pressure to 3.5bar that shuld do the trick.

[Dave Reed]

with the engine running

[SCHWARTZ]

cheers fella il try that also, but i have tried 3.5bar at idle but with the vac pipe still on and it still died:scratch::sad2:

[5teve L]

Has it only done this with the new reg fitted mate?

Or did you fit pump & reg together ?

[Dave Reed]

cheers fella il try that also, but i have tried 3.5bar at idle but with the vac pipe still on and it still died:scratch::sad2:

That i think you would find would be flooding the engine.

[SCHWARTZ]

nope had the same reg the whole time. started since ive changed the turbo and injectors. And has started again now i have fitted the fuel pipe properly but im sure it is getting crimped somewhere. I had it fueling good at idle and at wot but was super rich every where else so i was trying to sort that now its dying again:rolleyes:

[SCHWARTZ]

That i think you would find would be flooding the engine.

prob did dropped it back down to 2.5bar afterwards.

[Dave Reed]

prob did dropped it back down to 2.5bar afterwards.

Not sure what it should b at idle, but i'd try doing it how i've said as with the new injectors more fuel will be going in.. So even 3.5 may b to much.. Cant u pm haz as he seems to be the man who no's about these volvo lumps..

[SCHWARTZ]

he's not on here much but i will speak to him and see what he reckons.

[Dave Reed]

he's not on here much but i will speak to him and see what he reckons.

Try scoff then as i think he done alot on his car.

[Dave Reed]

anyway, why have you not gone out and tried it yet hahaha

[SCHWARTZ]

scoff said to set it to 3bar with the engine not running. I think:scratch: cant tonite:sad2: will get on it tomorow:D

[Dave Reed]

scoff said to set it to 3bar with the engine not running. I think:scratch: cant tonite:sad2: will get on it tomorow:D

Tbh scoff no's alot more than me.. But i would think it would prob give the same effect as disconnecting the vac pipe.. It's just i've always done it with the engine running..

[Guv]

Im running the same adjustable regulator as you schwartz on my b18ft, i set mine at 3.5bar with the vac pipe off whilst the engine was running. Its fine on mine, although im running standard injectors with a 150 lph pump. I raised mine to 3.5bar so i get more fuel on boost, i think as standard it should be 3bar.

[SCHWARTZ]

Mine was fine with the standard injectors but now im having probs. Think its just a case of trial and error and see how good I can get it. Cheers guys il let ya know how I get on.