Where is the fuel pick up located,,long,,long!
Thread Starter
Registered User
Joined: Jun 2004
Posts: 1,041
Likes: 3
From: IL
Where is the fuel pick up located,,long,,long!
And don't say in the tank. I know that. 
I mean in the front of the tank, or the rear.
My performance is way down, and drinking fuel like it's going out of style. Changed all filter's. No smoke. My pressure was reading a constant 5psi. But let me explain a little.
I've alway's had problem's with my gauge because of the isolator. Never been consistant. I even put a gauge in line before the isolator, but they crap out real quick. But it would show 21psi, when the incab showed 5-15psi(what ever it felt like). Then I got tired of the gauge and hooked it up with 1/4" brake line, and filled it full of -20* washer fluid. Back to a constant 21psi from the FASS.
Now for the last couple of month's the gauge has been reading 5psi. I'm thinking, crappy set up, or what ever going on with the gauge. It wouldn't hardly move off 5psi,,,even under WOT. And this is in the same time frame as poor performance and bad milage.Then tonight I went up Monteagle in Tn. It was a long, steady pull up a very steep mountain. When I got to the top. I had 10psi. After going up and down some hill's I can see it get better pressure going up a hill under WOT, instead of dropping pressure. That's making me think the pick up is clogged, and going up the hill is moving the crud to the back.
But this can only be true if the pick up is in the front. Do you guy's think I could be right,,,or I'v just been driving to long.
I just put in some Diesel Kleen tank cleaner before I shut down for the night. I'll see what that does. I really don't want to drop the tank on a hunch. But if you guy's think I'm right,,,it might be time for the tank vent mod. 
BTW. Where is the pick up located.
I mean in the front of the tank, or the rear.
My performance is way down, and drinking fuel like it's going out of style. Changed all filter's. No smoke. My pressure was reading a constant 5psi. But let me explain a little.
I've alway's had problem's with my gauge because of the isolator. Never been consistant. I even put a gauge in line before the isolator, but they crap out real quick. But it would show 21psi, when the incab showed 5-15psi(what ever it felt like). Then I got tired of the gauge and hooked it up with 1/4" brake line, and filled it full of -20* washer fluid. Back to a constant 21psi from the FASS.
Now for the last couple of month's the gauge has been reading 5psi. I'm thinking, crappy set up, or what ever going on with the gauge. It wouldn't hardly move off 5psi,,,even under WOT. And this is in the same time frame as poor performance and bad milage.Then tonight I went up Monteagle in Tn. It was a long, steady pull up a very steep mountain. When I got to the top. I had 10psi.
After going up and down some hill's I can see it get better pressure going up a hill under WOT, instead of dropping pressure. That's making me think the pick up is clogged, and going up the hill is moving the crud to the back. But this can only be true if the pick up is in the front. Do you guy's think I could be right,,,or I'v just been driving to long.
I just put in some Diesel Kleen tank cleaner before I shut down for the night. I'll see what that does. I really don't want to drop the tank on a hunch. But if you guy's think I'm right,,,it might be time for the tank vent mod. BTW. Where is the pick up located.
Registered User
Joined: Jan 2008
Posts: 476
Likes: 0
From: Harker Heights,Tx
no expert here but from what i think...if the pick up tube was clogged then you shouldnt be getting bad mileage, i would think it would be really good mileage cause the fuel wouldnt be getting used. But from what i have been told, really bad mileage is from bad injectors! thats my .02 cents
Registered User
Joined: Mar 2005
Posts: 554
Likes: 0
From: Florida
And don't say in the tank. I know that.
I mean in the front of the tank, or the rear.
My performance is way down, and drinking fuel like it's going out of style. Changed all filter's. No smoke. My pressure was reading a constant 5psi. But let me explain a little.
I've alway's had problem's with my gauge because of the isolator. Never been consistant. I even put a gauge in line before the isolator, but they crap out real quick. But it would show 21psi, when the incab showed 5-15psi(what ever it felt like). Then I got tired of the gauge and hooked it up with 1/4" brake line, and filled it full of -20* washer fluid. Back to a constant 21psi from the FASS.
Now for the last couple of month's the gauge has been reading 5psi. I'm thinking, crappy set up, or what ever going on with the gauge. It wouldn't hardly move off 5psi,,,even under WOT. And this is in the same time frame as poor performance and bad milage.Then tonight I went up Monteagle in Tn. It was a long, steady pull up a very steep mountain. When I got to the top. I had 10psi. After going up and down some hill's I can see it get better pressure going up a hill under WOT, instead of dropping pressure. That's making me think the pick up is clogged, and going up the hill is moving the crud to the back.
But this can only be true if the pick up is in the front. Do you guy's think I could be right,,,or I'v just been driving to long. I just put in some Diesel Kleen tank cleaner before I shut down for the night. I'll see what that does. I really don't want to drop the tank on a hunch. But if you guy's think I'm right,,,it might be time for the tank vent mod.
BTW. Where is the pick up located.
I mean in the front of the tank, or the rear.
My performance is way down, and drinking fuel like it's going out of style. Changed all filter's. No smoke. My pressure was reading a constant 5psi. But let me explain a little.
I've alway's had problem's with my gauge because of the isolator. Never been consistant. I even put a gauge in line before the isolator, but they crap out real quick. But it would show 21psi, when the incab showed 5-15psi(what ever it felt like). Then I got tired of the gauge and hooked it up with 1/4" brake line, and filled it full of -20* washer fluid. Back to a constant 21psi from the FASS.
Now for the last couple of month's the gauge has been reading 5psi. I'm thinking, crappy set up, or what ever going on with the gauge. It wouldn't hardly move off 5psi,,,even under WOT. And this is in the same time frame as poor performance and bad milage.Then tonight I went up Monteagle in Tn. It was a long, steady pull up a very steep mountain. When I got to the top. I had 10psi.
After going up and down some hill's I can see it get better pressure going up a hill under WOT, instead of dropping pressure. That's making me think the pick up is clogged, and going up the hill is moving the crud to the back. But this can only be true if the pick up is in the front. Do you guy's think I could be right,,,or I'v just been driving to long.
I just put in some Diesel Kleen tank cleaner before I shut down for the night. I'll see what that does. I really don't want to drop the tank on a hunch. But if you guy's think I'm right,,,it might be time for the tank vent mod. BTW. Where is the pick up located.
mine is doing the same thing right now(and has done it before)
to fix it refill and try to get as much air out between the isolator and the gauge.
the pickup is located to the rear of the tank, if you were getting plugged up your FASS will get ALOT louder because it is cavitating
Thread
Thread Starter
Forum
Replies
Last Post
Vman4220
24 Valve Engine and Drivetrain
2
Apr 14, 2015 05:20 PM
blowinsmoke1
Performance and Accessories 2nd gen only
1
Oct 29, 2009 04:41 PM
latitude500
1st Gen. Ram - All Topics
6
Feb 16, 2008 12:24 AM
joeely
3rd Gen Engine and Drivetrain -> 2003-2007
1
Dec 5, 2006 11:40 PM