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Apr 25, 2016 | 10:23 AM

wedge542

Thread Starter

Laughing Gas

Joined: Jan 2007

Posts: 883

Likes: 5

blue spring info

Anyone have before and after pressure reading from the updated blue spring change? Also with key on not running and while running?

Apr 25, 2016 | 10:27 AM

r2millers

Postmaster

Joined: Sep 2010

Posts: 3,472

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From: Southern Cal

I haven't personally but many posts here show guys who have. 47-49 lbs before and 57-60 after.

Apr 25, 2016 | 04:00 PM

Rusty Axlerod

Lead Driver

Joined: Feb 2011

Posts: 8,241

Likes: 155

From: L.A. (Lower Alabama)

I didn't own a proper pressure gauge when I did my blue spring but after a couple of years I'm seeing 64psi at key on (after it builds), 64psi at an idle and 58 at wide open throttle. WOT is commonly the lowest number.

Apr 25, 2016 | 04:32 PM

texastech_diesel

Token Redneck

Joined: Jun 2007

Posts: 9,339

Likes: 350

From: Breckenridge, TX

Quote:

Originally Posted by wedge542

Anyone have before and after pressure reading from the updated blue spring change? Also with key on not running and while running?

Before-
KOEO - ~55psi
Running - ~55psi
WOT - 42psi MIN

After-
KOEO - 62-64psi
Running - 62-64psi
WOT - 55psi MIN

Using this:
http://www.dieselmanor.com/isspro/R17044.htm
https://www.ford-trucks.com/forums/1...l#post12858548

Here:

Apr 25, 2016 | 05:03 PM

wedge542

Thread Starter

Laughing Gas

Joined: Jan 2007

Posts: 883

Likes: 5

Am i seeing that gauge at about 92lbs,no rpm so just key on?

Apr 25, 2016 | 07:46 PM

diesel_dan

Lead Driver

Joined: Jul 2004

Posts: 6,951

Likes: 512

From: Foothills, CA

Quote:

Originally Posted by wedge542

Am i seeing that gauge at about 92lbs,no rpm so just key on?

Funny, but I looked at that and thought "isn't that about 90+ psi??"....

Apr 25, 2016 | 07:55 PM

BigBlueX

Senior User

Joined: Dec 2014

Posts: 254

Likes: 0

From: Miami, Fl

I just did mine a few days ago. I think my mpgs went up as well. I'm going to calculate on my next fill up.

Before
KOEO 48 psi
Idle 48 psi
Running 47psi
WOT 40 psi

After
KOEO 60psi
Idle 60 psi
Running 58psi
WOT 55 psi

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Apr 26, 2016 | 12:10 AM

04badford

Lead Driver

Joined: Sep 2012

Posts: 7,833

Likes: 96

From: Manteca,Ca

Quote:

Originally Posted by wedge542

Am i seeing that gauge at about 92lbs,no rpm so just key on?

Quote:

Originally Posted by diesel_dan

Funny, but I looked at that and thought "isn't that about 90+ psi??"....

I wasn't going to say, but 90 pds on the go petal , no wonder my fuel Milage has gone south

Apr 26, 2016 | 12:25 AM

#10

texastech_diesel

Token Redneck

Joined: Jun 2007

Posts: 9,339

Likes: 350

From: Breckenridge, TX

Quote:

Originally Posted by wedge542

Am i seeing that gauge at about 92lbs,no rpm so just key on?

Yeah the pic was to show Isspro when the gauge was messing up immediately after install. Turns out the hole was cut slightly out of round and was binding the stepper motor when the gauge would sweep home and not make it, so it gradually read higher and higher until it pegged out. Dremel with a sanding drum and a solid squeeze on the gauge fixed it.