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Boost leak question

abner99
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abner99

abner99

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Dude this is so weird my needle valve is basically closed. Plus my idle is 15psi with FASS titanium 95gph and like 14.5 psi. Do I need to call FASS. I just bought a snubber for my boost. I still think there is a leak. 

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notlimah

notlimah

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19 minutes ago, abner99 said:

Dude this is so weird my needle valve is basically closed. Plus my idle is 15psi with FASS titanium 95gph and like 14.5 psi. Do I need to call FASS. I just bought a snubber for my boost. I still think there is a leak. 

 

Not sure of question? :shifty:

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abner99

abner99

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11 hours ago, SilverMoose said:

Are the titanium pumps adjustable?  @abner99 does it have it's own wire harness and powered off the PDC?  Where are you taking the pressure from?

 

 

L8tr

D

Yes it's about a foot off the vp44. Set up is just like mopar1973man set up same 1/8 line with needle valve. I have never seen over 15 with this pump. Brother just put same pump on his 02 cummins and he has 18 at idle something gotta be wrong. 

7 hours ago, notlimah said:

I don't think the FASS 95 is adjustable but that's just going off the fact that my 150 isn't either. I had to replace my return spring and ball a couple times to get consistent pressure.

Far as I know you can't adjust it. 

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notlimah

notlimah

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To further what dripley already said use this pic 

 

IMG_4809.JPG.98829dc0a18441b26c3178262ddb5944.JPG

 

Where the return to tank line leaves the pump you'll find the return ball and spring. That's how these pumps regulate pressure. If everything looks good you could shim it with a washer with the following measurements to increase your pressure. A lot of the springs from FASS seem weak or inconsistent so that's probably why you're brother is seeing different pressure.

 

OD - .631"

ID - .320"

thickness - .039"

 

^ pretty sure I stole those measurements from Mike but they should apply to your pump 

Edited by notlimah
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abner99

abner99

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Wow cool makes sense. I really don't feel comfortable playing with a spring so I'll probably just buy a new one and put it in. Thank you. It also makes more sense now when I fuel up. You can hear the return in my tank it's super loud. Thanks again.  

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Mopar1973Man

Mopar1973Man

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12 hours ago, notlimah said:

Where the return to tank line leaves the pump you'll find the return ball and spring. That's how these pumps regulate pressure. If everything looks good you could shim it with a washer with the following measurements to increase your pressure. A lot of the springs from FASS seem weak or inconsistent so that's probably why you're brother is seeing different pressure.

 

OD - .631"

ID - .320"

thickness - .039"

 

^ pretty sure I stole those measurements from Mike but they should apply to your pump 

 

@notlimah Why don't you create an article about the spring shim and adjustments?

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notlimah

notlimah

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56 minutes ago, Mopar1973Man said:

 

@notlimah Why don't you create an article about the spring shim and adjustments?

 

I could probably do that. A lot of the info I have in another thread so I could essentially copy and paste.

 

Are those measurements correct? I personally haven't used the washer to shim it but pretty sure I wrote those measurements down at some point from one of your posts.

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jag

jag

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Aren't boost leaks a hoot !

When I had my Demon boost leak, I finally sprayed in were the tubes meet the tank, & there was my answere. Intercooler needed replacement. It also took care of my jumpy gauge syndrome. 

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abner99

abner99

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14 hours ago, jag said:

Aren't boost leaks a hoot !

When I had my Demon boost leak, I finally sprayed in were the tubes meet the tank, & there was my answere. Intercooler needed replacement. It also took care of my jumpy gauge syndrome. 

That's what I'm afraid. That guage has never done this till about a month ago. I think your right. 

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jlbayes

jlbayes

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On 3/25/2017 at 10:04 PM, dripley said:

The return is bleeding pressure off to the tank. Decrease that flow and more goes into the supply. That equals great supply pressure.

 

You would NOT believe the reactions I get on fb when I tell someone to do this. Fass supporters maintain the system is not setup this way. Proof is when they clamp the return and pressure sky rockets.

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dripley

dripley

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11 minutes ago, jlbayes said:

 

You would NOT believe the reactions I get on fb when I tell someone to do this. Fass supporters maintain the system is not setup this way. Proof is when they clamp the return and pressure sky rockets.

Sounds like me trying to explain to my wife anything about automobile. 

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