Knock
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Junior User
Joined: Mar 2002
Posts: 77
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From: georgia
Knock
Today a noise started in my 7.3 Diesel.
As I throttle up ever so easy I get this knocking sound. As you gain rpm it goes away. If you throttle up fast no noise.
It sounds like when I have in the past sprayed starting fluid in a gas engine. Its very light knock but its there.
2002 7.3
7500 miles
As I throttle up ever so easy I get this knocking sound. As you gain rpm it goes away. If you throttle up fast no noise.
It sounds like when I have in the past sprayed starting fluid in a gas engine. Its very light knock but its there.
2002 7.3
7500 miles
Cargo Master
Joined: Jun 2003
Posts: 3,292
Likes: 6
From: Ardenvoir, Washington
Welcome to the forum.. Give us some more info on the knock on your 99. Does the engine have a long lead injector on #8?.. Mine was making weird knocking, crackling noises and it turned out to be a bad #8 injector.. Ford has a modified injector for a fix for #8... or..
maybe you got some bad fuel.
Try sending a private message to Ford 2002.. (since it was an old post)
maybe you got some bad fuel.
Try sending a private message to Ford 2002.. (since it was an old post)
New User
Joined: Sep 2007
Posts: 3
Likes: 0
KNOCK in 2003 F-250 7.3L
Its a 2003 with the 7.3L 4x4 102K miles I purchased the truck on eBay and sold my 99 because it had 200K miles (nothing wrong with it) just wanted to upgrade when the truck pulled up I noticed it right away it sounds like a normal 7.3 but just a little louder than my 99 and any of my co workers 7.3 fords (5 others) has good power, no smoke other than the edge programmer i've got a straight pipe 4" turbo back, intake, etc. i'm real meticulous i've ran stanadyne, tried #1 & #2 diesel, i've used every kind of diesel clean you can imagine thinking it was a clogged injector obviously changed fuel filter, added 2 qts power punch to the last 2 oil changes and nothing has changed the noisy engine, havent checked for air in fuel or pulled the valve cover to see if I have an LL injector on #8.... think its a possability for either?
Infidel
Joined: Aug 2003
Posts: 1,115
Likes: 2
From: Elkhorn WI
wow wing...u pulled up one old thread for sure! welcome to a great place.
First thing I'de do it to check that #8 for LL, I know how jacked up the drivers side is with the harness and what not in the way, but if you know wats in there then you can draw a sharper image to the problem.
Take the oil fill cap off and let it sit in the tub....does it wanna jump out or does it ruffle a little bit? Also about how much white comes outa the oil fill tube with the oil fill cap off?
First thing I'de do it to check that #8 for LL, I know how jacked up the drivers side is with the harness and what not in the way, but if you know wats in there then you can draw a sharper image to the problem.
Take the oil fill cap off and let it sit in the tub....does it wanna jump out or does it ruffle a little bit? Also about how much white comes outa the oil fill tube with the oil fill cap off?
Cargo Master
Joined: Jun 2003
Posts: 3,292
Likes: 6
From: Ardenvoir, Washington
Just curious ... can you explain the above in more detail.. are you referring to the smoke jumping and ruffling ?
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New User
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Whats this supposed to do?? Maybe some more information???
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Postmaster
Joined: Oct 2004
Posts: 3,767
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Nope, 5 years later he is still wondering....
J/K man. Way to use the damn Search Button. And welcome to FTE.
Kris was in Middle-School
J/K man. Way to use the damn Search Button. And welcome to FTE.
Kris was in Middle-School
