08-22-2014, 11:32 AM
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#29
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Senior Member
Join Date: Oct 2010
Location: Orem, Utah
Posts: 5,762
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Re: Tell me this noise isn't what I'm afraid it is.
Quote:
Originally Posted by sidevalve8ba
When the engine is cold does it knock immediately after starting or after it runs for a bit?
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The knocking is the same hot or cold
Quote:
Originally Posted by koates
Henry, For a quick test you could just pull off one spark plug lead at a time and see which cylinder causes the knock to go quieter.
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Quote:
Originally Posted by oldford2
Professor,
Pull one plug at a time and see if the knock stops or diminishes at any cylinder. If it is a rod this test would take all the pressure off the offending cylinder. Just a thought
John
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Unfortunately, pulling the spark plug wires one at a time didn't identify the offending piston (if there is one). It would sure be nice to know which piston it is before I tear into it so I don't have to remove both heads and all pistons to find out. Any other test to find out?
Quote:
Originally Posted by Jack E/NJ
Dunno? I'd pull all the plugs first and see if they can tell you anything. If they all look the same, then pull the heads and take a look at and massage the pistons for bearing or wristpin issues.
Jack E/NJ
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How do I "massage the pistons for bearing and wristpin issues?"
__________________
Prof. Henry (The Roaming Gnome) 
"It is good to have an end to journey toward; but it is the journey that matters, in the end.” *Ursula K. Le Guin in The Left Hand of Darkness
Last edited by Old Henry; 08-22-2014 at 11:43 AM.
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