I am on my road trip 550 miles left just filled fuel started pickup up and an injectors was makin a lot of noise knock knock knock it smother out eventually what do you guys therenk

 

How low was your fuel when you filled up? Maybe sucked some air?

 

Between qtr and empty nose was sittin up hill a tad and had weight of empty 24 foot gooseneck stock trailer in bed so maybe I'm at a friends house for a few minutes when I start it again I will see what she does

 

Just started her no knock so guessin just air

 

Sounds like the likeliest of possibilities.

 

I was gettin worried I was gonna have to do clutch and injectors and turbo I absolutely hate my ats housing I'm fricken deaf 1350 miles since Friday night and 550 left tonight ugh it's 38r time

 

If you think the 38r is going to be quieter than the stock turbo with ATS, you're in for a surprise. Getting away from an "open" air intake will reduce noise.
I see you've done the Harpoon mod. I assume you did the Hutch, as well. The suction screen "foot" might be busted.

 

My scheduled mods to my truck are now done, so now it's time for me to look into this same problem. I had very loud intermittant knocks under the hood last summer and the mechanic replaced two injectors to eliminate the problem. He told me to start using fuel additives and I have since that time. I now get an occasional knock here and there, but nothing like the frequency and intensity of the knocks last summer. I've done the buzz test and looked at AE data until my eyes bleed, but I can find nothing that would indicate the source of the knock. The occasional knock only occurs with engine warm, in gear, and low RPMs like manuevering in a parking lot. Fuel level has no bearing, I have 1/2 tank now and it did it yesterday.

 

Mine does the same thing. It drove me crazy cause I had just bought the truck. After I added the FRX it barley does it anymore and if it does its barley noticeable.

 

I've been looking at that. I know somebody who had an FRX for a few years and he pulled it when it blew. He runs BD and the FRX design has been changed, so there are too many variables for me to know what happened with his. I'm mulling on this mod, but I'm an advocate of solving the root cause of a problem if possible.

 

Mine knocked as well, especially the one weekend trip we did with the toyhauler. Got back to unhook, truck run'n, and could'nt believe the noise it was making...chaulked it up to higher fuel psi. Got it down to 62/63-ish, and all but gone now...

Dman...if you wanna part with that ATS, shoot me a price, Bro...

 

I highly recommend the FRX. It's amazing how quiet my truck is now.

 

In that case, I'll look at that in earnest and do my usual homework. Thanks guys!

 

I two had the fuel knock really bad. Go on a trip and when you stop somewhere it was knocking something bad. Put in Clays FRX and its all but gone. I took it to Ford and they said i needed #8 injector before the frx. I plan on changing all of them so I tryed the frx and am very happy so far.

Chet

 

Ha I was gonna say the same thing