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post #1 of 29 (permalink) Old 03-29-2014, 06:51 PM Thread Starter
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Thumbs down Truck dies after fass install

So I just installed a fass 150 on my 2006 dodge. Truck will crank up runs smoothly for few seconds then dies. Then I can click it over prime to line and it will crank and run a few seconds again. Truck doesn't seem to surge like it has air in the line. Filled tank up to 3/4 and does the same thing? I double checked hoses from tank and r on tanks goes to r on pump and s on tank goes to t on pump. I also noticed that the pump doesn't seem to run smoothly it kind of sounds like its surging. Has anyone had this problem? Do injectors need to be bled?



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post #2 of 29 (permalink) Old 03-29-2014, 07:46 PM
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DO NOT bleed your injectors!!!!! Way too much pressure coming out of your CP3 to try that. You could seriously hurt yourself doing that.

Did you fill your filters before installing them? It sounds a bit like your pump isn't primed.

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post #3 of 29 (permalink) Old 03-29-2014, 07:58 PM Thread Starter
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I did not. I watched a video on YouTube and it said that to fill your filters you can leave the hose off to the pump and click the key over and it will fill filters and line. I did that and got fuel to the pump. Do you think that the pump didn't fill them all the way up? Let me try that. Not sure why I didn't think to do that first. What a dumb dumb!
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post #4 of 29 (permalink) Old 03-29-2014, 08:28 PM
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i wouldn't fill the filters cause youll get un filter fuel in the wrong part of the filter and run unfliter fuel through your cp3 i'd only do it as a last resort id crack the line going to the cp3 and let the lift pump run a while

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post #5 of 29 (permalink) Old 03-29-2014, 08:44 PM
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To make sure ur filters have fuel going threw them can open the water drain on them. The pump does surge a some it hits pressure then backs off a little. Do you have a line pressure gauge to see what the pump is doing.

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post #6 of 29 (permalink) Old 03-29-2014, 09:01 PM
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My fass always fills the filters by itself without leaving them loose. screw them on and bump the starter and it should pressurize the system.

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post #7 of 29 (permalink) Old 03-30-2014, 12:08 AM
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had a similar problem with my air dog install, turns out the lines coming from the tank to the pump ended up getting a little crimped under the bed of the truck and would prime the pump and filters but couldn't flow enough fuel once the truck started.

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post #8 of 29 (permalink) Old 03-30-2014, 12:58 AM
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Crack the filters and let it prime until you see fuel squirt ever where. Tighten the filters and you should be good to go.
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post #9 of 29 (permalink) Old 03-30-2014, 01:24 AM
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Honestly I have a good clean can of diesel that I always fill filters with.... so what cuss me

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post #10 of 29 (permalink) Old 03-30-2014, 01:26 AM
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Unless your pump is cutting in and out you have air in the line fuel=running..... air=not running

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post #11 of 29 (permalink) Old 03-30-2014, 08:58 AM Thread Starter
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Update- I pulled the filters they were full. So I cranked it again truck ran strong for about 5-6 seconds and died, I let is sit and cranked it again same thing for about 5 times in a row and it finally ran. Must have had some built up air in it somewhere. Seems to be fine now. Thanks
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post #12 of 29 (permalink) Old 03-30-2014, 06:31 PM Thread Starter
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So as you know I installed a FASS 150 yesterday. I had trouble getting it to run but after about 10 cranks it ran. It cranked up and I drove it about 20 miles today then it cut out. I stopped went in a store and it took roughly 8 cranks to stay running. I limped it home dropped the pump and re-tapped the fittings and checked the lines. Everything is tight. No leaks. Still won’t run. I can crank it and it ran 5 sec. did this multiple times, then it ran 8 sec. repeat process now will run 11 sec. The truck runs strong when it is running. Then dies, like I turned off the switch. Prime the pump crank again and run 11 sec. anyone have a clue what might be causing this?

I have to get it running as I'm out of town and have to work tomorrow.


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