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04-03-2016, 07:06 AM | #1 |
Senior Member
Join Date: Sep 2013
Location: Dighton, Mass
Posts: 1,230
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M.D needs second opinion?
Before my patient hits the operating table: Its a 59A all vitals are
excellent. The engine is silent except for tap tap tap at idle. Its not fuel pump coming more from the front. Anything more than idle or driving more like under load its gone. I rule out valves cause the tap is faster. I ran into this 10yrs ago with a 391FT drove me nuts and swear It was a lifter. Any thoughts? I say its a wrist pin bushing. Just need a second opinion before pricing the job out... sam by the way it was indeed wrist pin bushings on the 391 that noise went away while underload-- |
04-03-2016, 09:28 AM | #2 |
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Join Date: Feb 2013
Location: Eureka Calif.
Posts: 968
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Re: M.D needs second opinion?
I'm not too familiar with the newer flatties but my '36 21 stud had a similar noise.It turned out to be a leaky vacuum brake piston/bore. At idle the piston would rattle back and forth. Start it up and when it begins ticking,pinch off (or disconnect) the vacuum hose. If the noise goes away you've found the problem.
59 A's might be different.I don't know. |
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04-03-2016, 10:12 AM | #3 |
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Join Date: Sep 2013
Location: Dighton, Mass
Posts: 1,230
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Re: M.D needs second opinion?
I never thought of that, yes it has vac brake, But that's the area where I here it.. sam
runs so well I hate to think- wrist pin- but anything is possible. this car. super deluxe Last edited by big job; 04-03-2016 at 10:18 AM. |
04-03-2016, 10:21 AM | #4 |
Senior Member
Join Date: Feb 2013
Location: Eureka Calif.
Posts: 968
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Re: M.D needs second opinion?
OK.... remove the fan belt and start it up.If the noise goes away, it's gotta' be either the generator or one of the water pumps or the belt.
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04-03-2016, 10:25 AM | #5 |
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Location: Dighton, Mass
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Re: M.D needs second opinion?
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04-03-2016, 10:38 AM | #6 |
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Re: M.D needs second opinion?
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04-03-2016, 07:24 PM | #7 |
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Join Date: May 2010
Location: North Brunswick NJ
Posts: 74
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Re: M.D needs second opinion?
I vote wrist pin. Pete
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04-03-2016, 07:31 PM | #8 |
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Location: Star, MS
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Re: M.D needs second opinion?
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