Go Back   The Ford Barn > General Discussion > Late V8 (1954+)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 08-06-2020, 11:02 AM   #21
dmsfrr
Senior Member
 
dmsfrr's Avatar
 
Join Date: Aug 2012
Location: Abq, NM
Posts: 2,493
Default Re: Strange "Clanking Noise" at Idle

Have you checked the crank damper pulley? If it has a weight ring it may loose, about to come off.
The rubber layer dry rots and the ring may have slipped and is hitting something.
Attached Images
File Type: jpg ford crank pulley red arrows.jpg (32.7 KB, 6 views)

Last edited by dmsfrr; 08-06-2020 at 09:49 PM. Reason: add photo
dmsfrr is offline   Reply With Quote
Old 08-06-2020, 04:26 PM   #22
Daves55Sedan
Senior Member
 
Daves55Sedan's Avatar
 
Join Date: May 2010
Location: Granite City, Illinois
Posts: 2,144
Default Re: Strange "Clanking Noise" at Idle

One more thing to check. Look at the generator mounting bracket to see if the bolt that holds it to the side of engine is missing. If it is, that bracket will sway back and forth a little bit and hit the side of the engine, making a loud noise.
Daves55Sedan is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-12-2020, 06:47 PM   #23
ilgrilleto
Junior Member
 
Join Date: Jul 2020
Posts: 21
Default Re: Strange "Clanking Noise" at Idle

Hey Everyone,

Apologies for the lack of reply, life has been a bit crazy and also forum notifications don't seem to be working properly. I still can't seem to get to the bottom of the noise, but thanks to everyone for their advice. Troubleshooting has been a bit of a saga, so here are the updates:

A few days after my last reply I started noticing some misfires, long story short, bad plug wires. With new plug wires in, it still wasn't running right so I pulled the valve covers and Cylinder 4's exhaust pushrod was a bit off center, when I loosened the adjustment nut, it fell straight in. Thankfully I was able to fish it out with a magnet on a stick and it wasn't bent. Turns out the bolt to secure the spark plug wire holder was too long and was interfering with the pushrod. Bolt removed, pushrod re-installed, readjusted valve lash on Cylinder 4 for good measure and fired the engine up.

Still not running great, pulled all the plugs and they were pretty fouled up so cleaned them up and voila, engine now runs great. That said, the noise is still there, though not as prevalent. This is the most recent video I just took. When the engine is fully warmed up, the noise can be heard with the hood close as it idles in my driveway. It sounds like it coming from around the oil pan area when under the car, and around the back of the engine when around the sides. When in front of the car it sounds like the water pump. Guess it's one of those cases of the sound bouncing around.

https://www.youtube.com/watch?v=dZJ1PDEbUJ8

If you notice in the video too, it almost seems like it's got a small miss. I know these engines don't idle perfectly smooth, and you can barely notice it, maybe I'm just being paranoid. My big concern is worn bearings. If you guys have a second, let me know what you think, and as always, thanks again!

Vince
ilgrilleto is offline   Reply With Quote
Old 08-12-2020, 09:29 PM   #24
darrell
Senior Member
 
Join Date: Dec 2010
Location: p.e.i.
Posts: 834
Default Re: Strange "Clanking Noise" at Idle

often these engines will spin a wrist pin bushing and make a noise like this.but it takes some time and yours started suddenly.if youve got good oil pressure dont worry about it.
darrell is offline   Reply With Quote
Old 08-13-2020, 01:00 AM   #25
Alaska Jim
Senior Member
 
Alaska Jim's Avatar
 
Join Date: May 2010
Location: Palmer, Alaska
Posts: 1,342
Default Re: Strange "Clanking Noise" at Idle

I have had fuel pumps make similar noises, also I have heard extremely loose timing chains hit the side of the front cover , and make similar noises. just a shot in the dark not being there in person. good luck and let us know what and when you find the problem
Alaska Jim is offline   Reply With Quote
Old 08-25-2020, 01:52 AM   #26
fiddy6
Member
 
Join Date: Jul 2018
Posts: 72
Default Re: Strange "Clanking Noise" at Idle

Is there any way to inspect these flywheel/flex plate rivets without pulling the transmission?

I think I have a similar sound at idle that goes away off idle.
fiddy6 is offline   Reply With Quote
Old 08-25-2020, 06:43 AM   #27
wellcraft17
Member
 
Join Date: Feb 2012
Location: Tampa fl
Posts: 88
Default Re: Strange "Clanking Noise" at Idle

I have the same noise on my 56 292 when the idle is set to low, been that way for years. I found the solution was to bump the idle up a hair and the noise disappeared. The noise is definitely coming from inside the engine and I guess it could be rods or wrist pins. I do have very good oil pressure, 40 idle, 55-60 at highway speeds.The other suggestion from a guy at the machine shop was the cam shaft might be moving back and forth slightly, I found that was a little hard to believe but he rebuilds a lot Of engines a year and probably has seen everything.
wellcraft17 is offline   Reply With Quote
Old 08-25-2020, 10:56 AM   #28
dmsfrr
Senior Member
 
dmsfrr's Avatar
 
Join Date: Aug 2012
Location: Abq, NM
Posts: 2,493
Default Re: Strange "Clanking Noise" at Idle

Quote:
Originally Posted by fiddy6 View Post
Is there any way to inspect these flywheel/flex plate rivets without pulling the transmission? ....
Is there an inspection cover on the bottom of the bellhousing? Approx 2 x 6 inches.
Example bellhousing photo: air cooled automatic, thru mid '56.
Attached Images
File Type: jpg air cooled bellhousing, insp cover c.jpg (56.6 KB, 11 views)

Last edited by dmsfrr; 08-25-2020 at 12:03 PM.
dmsfrr is offline   Reply With Quote
Old 08-25-2020, 01:27 PM   #29
fiddy6
Member
 
Join Date: Jul 2018
Posts: 72
Default Re: Strange "Clanking Noise" at Idle

I was looking through the air inlet and outlet. I see the inspection plate now. Thank you.
fiddy6 is offline   Reply With Quote
Old 08-25-2020, 02:06 PM   #30
dmsfrr
Senior Member
 
dmsfrr's Avatar
 
Join Date: Aug 2012
Location: Abq, NM
Posts: 2,493
Default Re: Strange "Clanking Noise" at Idle

Quote:
Originally Posted by fiddy6 View Post
I was looking through the air inlet and outlet. I see the inspection plate now. Thank you.
You're welcome.
The removable air duct on the drivers side could help with the view inside too, only 4 bolts holding it on.
And it's a larger hole.
dmsfrr is offline   Reply With Quote
Old 08-25-2020, 07:30 PM   #31
Daves55Sedan
Senior Member
 
Daves55Sedan's Avatar
 
Join Date: May 2010
Location: Granite City, Illinois
Posts: 2,144
Default Re: Strange "Clanking Noise" at Idle

Quote:
Originally Posted by fiddy6 View Post
Is there any way to inspect these flywheel/flex plate rivets without pulling the transmission?
I don't see how that will help. The little rectangular shaped inspection hole at the bottom of the bellhousing will allow you to look, but you can't tell if the rivets are loose and there's not enough room to grab the flywheel and tug it back and forth to see if there is movement.
All I can say is, decades ago, my '55 had a noise at idle that you could hear loudest by lowering your ear down by the back of the front tire. I pulled out the trans and discovered the rivets on one side of the flexplate loosened up. But that was in the '70's and I had a flexplate from a local junkyard the next day. I still have the bad one in my garage. I think the only way to be sure is to tear the trans out and get the flexplate off.
Daves55Sedan is offline   Reply With Quote
Old 09-02-2020, 11:01 PM   #32
ilgrilleto
Junior Member
 
Join Date: Jul 2020
Posts: 21
Default Re: Strange "Clanking Noise" at Idle

Hey Everyone,

Sorry again for the delayed reply, I've decided to stop trusting the notifications at this point. First off, thanks again everyone, I greatly appreciate all the help. Not sure why or how, but after a new set of plugs and a few drives, the engine seemed to sort itself out. No more misses, and you could only just hear the noises if you were listening for them. It's all a bit confusing, however, at this point the car is off to a new owner who is fully aware of this saga, but all reports indicate that the car is still running fine. Interestingly enough, he did report that the engine ran noticeably better without the factory oil-bath air cleaner, but as long as he's happy, I'm happy.

Thanks,
Vince
ilgrilleto is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 03:21 AM.