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Old 07-12-2020, 02:56 PM   #1
Reelnative
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Default Engine noise?

I acquired a new noise over the past weekend, I thought it was a belt noise so I adjusted/ replaced the belt. Did not go away!!! I removed the belt and noise didnít go away, stethoscoped the water pump, alt (6volt positive ground) with belt on, distributor with belt off, touched every nut and bolt I can think off but noise is still there. This is my daily driver and donít want to damage anything else. Whatís my next step?
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Old 07-12-2020, 03:23 PM   #2
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Default Re: Engine noise?

What kind of noise?

How long have you had the car and how many miles have you driven it.

Model Aís car make all kinds of noises. Some just go away.

If it sounds like itís in the top of engine, could be valve sticking. Marvel Oil in gas will help that.

I would not recommend rushing into taking things apart.

A dry distributor can also start making noises.

More info needed.

Enjoy.
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Old 07-12-2020, 03:50 PM   #3
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Default Re: Engine noise?

Like WHN mentioned, what kind of of noise, what does it sound like. And were is it coming from ? A cheap auto store stethoscope, dowel, hose, can help locate it.
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Old 07-12-2020, 03:59 PM   #4
Dean Lemoine
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Default Re: Engine noise?

If itís a squealing noise, kind of sounds like a fan belt? You might want to make sure the distributor is well oiled. How do I know this, you ask?
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Old 07-12-2020, 06:18 PM   #5
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Default Re: Engine noise?

Make sure your crank pulley is not loose or cracked.
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Old 07-12-2020, 06:49 PM   #6
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you are vague on the description... I had the starter rod just rubbing on the firewall and the noise was incredible for such a small contact...but the metal to metal was just right to sound much worse than it was. Check all pass through..... starter, gas, etc...........
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Old 07-12-2020, 07:54 PM   #7
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Quote:
Originally Posted by jg61hawk View Post
you are vague on the description... I had the starter rod just rubbing on the firewall and the noise was incredible for such a small contact...but the metal to metal was just right to sound much worse than it was. Check all pass through..... starter, gas, etc...........
The starter rod is negative and the firewall is positive so if they are rubbing you are probably hearing electrical arcing.

John
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Old 07-12-2020, 10:34 PM   #8
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I'm polarized by the above statement.
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Old 07-12-2020, 11:21 PM   #9
Ruth
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Quote:
Originally Posted by Jack Shaft View Post
I'm polarized by the above statement.
Shocking!

Quote:
Originally Posted by aermotor View Post
The starter rod is negative and the firewall is positive so if they are rubbing you are probably hearing electrical arcing.

John
I certainly hope your starter rod is insulated from the positive side.
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Last edited by Ruth; 07-13-2020 at 11:49 AM.
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Old 07-13-2020, 05:45 AM   #10
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Default Re: Engine noise?

The starter rod is negative and the firewall is positive so if they are rubbing you are probably hearing electrical arcing.


I'm polarized by the above statement



Shocking!




LOL !
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Old 07-13-2020, 06:59 AM   #11
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Default Re: Engine noise?

I guess I stated wrong in post #7. Please explain when and how the sparks fly when the starter rod touches the firewall when the insulation in the rod retainer around the rod is missing. I don't understand - the plus battery cable is connected to the frame (firewall) so how does the negative post enter into the picture to cause the sparks?

John
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Old 07-13-2020, 07:13 AM   #12
Jack Shaft
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Default Re: Engine noise?

Your starter switch is bad.
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Old 07-13-2020, 07:44 AM   #13
aermotor
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Your starter switch is bad.
How is it bad? It works and starts the car, the rod sparks when it touches the firewall because of no insulation in the rod centering retainer. I am just trying to understand the currant flow to cause this. Is it only when the switch is made or any time the rod touches the firewall?

John
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Old 07-13-2020, 08:44 AM   #14
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Default Re: Engine noise?

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Originally Posted by aermotor View Post
How is it bad? It works and starts the car, the rod sparks when it touches the firewall because of no insulation in the rod centering retainer. I am just trying to understand the currant flow to cause this. Is it only when the switch is made or any time the rod touches the firewall?

John



There should be no electrons at all in the starter rod. Its insulated from the switch.
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Old 07-13-2020, 11:11 AM   #15
Ruth
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Default Re: Engine noise?

This "kit" insulates the plunger (starter rod) from the switch. The little cross goes in the end of the plunger (starter rod). If you are getting sparks you better check out your switch.

https://www.snydersantiqueauto.com/P...earchByKeyword

Maybe think about getting a housing insulator while you are at it. https://www.snydersantiqueauto.com/P...-INSULATOR-KIT
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Last edited by Ruth; 07-13-2020 at 11:47 AM.
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Old 07-13-2020, 11:25 AM   #16
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Default Re: Engine noise?

It's not bad,just not right
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Old 07-13-2020, 03:53 PM   #17
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Default Re: Engine noise?

Found my noise! Carb to intake manifold gasket.
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Old 07-13-2020, 04:32 PM   #18
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Originally Posted by Reelnative View Post
Found my noise! Carb to intake manifold gasket.




Good. Easy fix.
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Old 07-13-2020, 04:33 PM   #19
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Default Re: Engine noise?

Good for you. Itís always something.

John
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Old 07-13-2020, 06:06 PM   #20
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Default Re: Engine noise?

Good! It's funny how noise will travel, like leaks!
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