injector knock
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Tuned
Joined: Sep 2011
Posts: 399
Likes: 1
From: Ness city Kansas
injector knock
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
Thread Starter
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Tuned
Joined: Sep 2011
Posts: 399
Likes: 1
From: Ness city Kansas
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
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Tuned
Joined: Sep 2011
Posts: 399
Likes: 1
From: Ness city Kansas
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
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 24
From: Damon (South East Texas)
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.
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
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.
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Senior User
Joined: Apr 2011
Posts: 380
Likes: 0
From: Union,Ky
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.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
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.
Lead Driver
Joined: Sep 2010
Posts: 7,793
Likes: 50
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...
Dman...if you wanna part with that ATS, shoot me a price, Bro...
Senior User
Joined: Apr 2011
Posts: 380
Likes: 0
From: Union,Ky
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 as 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 problem if possible.
Lead Driver
Joined: Sep 2005
Posts: 9,399
Likes: 188
From: Norco,CA
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
Chet
Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
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...
Dman...if you wanna part with that ATS, shoot me a price, Bro...