Clacking noises.
Thread Starter
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Freshman User
Joined: Oct 2008
Posts: 25
Likes: 0
From: None of your buisness
Clacking noises.
I'll start with the truck details
2001 F-350
7.3
155,000 miles
when the truck warms up, it has a clack or a knock, almost like a rocker arm knock.
It only seems to be when the truck gets up tp operating temp, and I get off the highway, sitting at a light at idle. I thought about the "Hutch Mod", but it only seems to be at operating temp, and sometimes when I have a full tank, so it seems to be ruled out to me.
My other questions: what does the HPOP feed? What is it's function? Could this be related? How do I check to see if the HPOP is working properly if I need to check it?
2001 F-350
7.3
155,000 miles
when the truck warms up, it has a clack or a knock, almost like a rocker arm knock.
It only seems to be when the truck gets up tp operating temp, and I get off the highway, sitting at a light at idle. I thought about the "Hutch Mod", but it only seems to be at operating temp, and sometimes when I have a full tank, so it seems to be ruled out to me.
My other questions: what does the HPOP feed? What is it's function? Could this be related? How do I check to see if the HPOP is working properly if I need to check it?
Thread Starter
|
Freshman User
Joined: Oct 2008
Posts: 25
Likes: 0
From: None of your buisness
I just bought the truck recently, and It had a fresh oil change when I bought it. It's still clean and full. Now that I'm getting close to time to change the oil, (which I have checked religiously, to see if I had any leaks on a new to me truck) I am going to run full syn. 5w-40 is what I have read is a good all around oil in a temperate climate like Seattle.
any suggestions on weight or am I in the right direction?
I can't really decide where the noise is coming from, I want to say driver's side, but can't narrow down to one cylinder.
any suggestions on weight or am I in the right direction?
I can't really decide where the noise is coming from, I want to say driver's side, but can't narrow down to one cylinder.
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
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Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
sounds like injector clatter,mine has done that for quite a while if I don't add oil to the fuel
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Joined: Jan 2008
Posts: 2,778
Likes: 65
From: Buffalo, NY
Mine had exact same symptoms as you. Knock when warm. One morning on my way to work it started out of the blue. Never had it before. I made up a home made injector break out box and found it to be #8. I also did the In tank mod "hutch" I didn't get better. The injector is out now on the bench along with the glow plugs. Going to try a different injector. How much 2stroke oil are you guys dumping in? Additive didn't do anything for me. But forgot about the oil thing.
