Engine rattle
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Freshman User
Joined: Oct 2002
Posts: 45
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From: Bremerton, WA
Engine rattle
1968 F100 360FE 2V, C6, 3.54
I have what sounds like a slight rattle coming from my upper end. If I had to guess I would say the valve train (i.e. loose rocker arms). It only seems to be prvelent when the engine is at constant speed or coasting down. Has anyone else had this problem? and is there something else it could be?
I have what sounds like a slight rattle coming from my upper end. If I had to guess I would say the valve train (i.e. loose rocker arms). It only seems to be prvelent when the engine is at constant speed or coasting down. Has anyone else had this problem? and is there something else it could be?
Post Fiend
Joined: Feb 2001
Posts: 6,624
Likes: 8
From: Missouri
Engine rattle
Is it a ticking or does it sorta sound like deep knocking? It does sound like lifters from what you are saying. Could be casued by sludge build-up or lack of oil to the lifters. Do you know how much oil pressure you have?
Thread Starter
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Freshman User
Joined: Oct 2002
Posts: 45
Likes: 0
From: Bremerton, WA
Engine rattle
It's more of a ticking sound, not deep knocking like rods. Oil pressure is good down the road, but drops off at idle. The gauge runs between the O and the I down the road and about an 1/8 of an inch past the first mark at idle. Not sure of the corresponding pressures. The engine only has 73K original miles, so it could have some sludge build up from long sitting periods. Are there any adjustments that should be made? or just cleaning.
Last edited by gonefishin; Mar 3, 2003 at 11:37 PM.
Post Fiend
Joined: Feb 2001
Posts: 6,624
Likes: 8
From: Missouri
Engine rattle
Dump a big ol can of marvel mytery oil in the crank case and drive it a hundred miles or so and change the oil and filter hot. Use cheap oil becasue you should repeat this process again. This should remove any sludge but its not guaranteed to fix your problem. Its a darn cheap start though. Sludge can cause the lifters to gum up and stick.
