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07-12-2020, 02:56 PM | #1 |
Junior Member
Join Date: May 2020
Location: Melbourne, FL
Posts: 28
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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 didn’t 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 don’t want to damage anything else. What’s my next step?
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07-12-2020, 03:23 PM | #2 |
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Join Date: Mar 2017
Location: Connecticut Shoreline
Posts: 1,819
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Re: Engine noise?
What kind of noise?
How long have you had the car and how many miles have you driven it. Model A’s car make all kinds of noises. Some just go away. If it sounds like it’s 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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07-12-2020, 03:50 PM | #3 |
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Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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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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07-12-2020, 03:59 PM | #4 |
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Join Date: Nov 2018
Location: Dahlonega, Ga
Posts: 251
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Re: Engine noise?
If it’s 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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07-12-2020, 06:18 PM | #5 |
Senior Member
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Re: Engine noise?
Make sure your crank pulley is not loose or cracked.
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07-12-2020, 06:49 PM | #6 |
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Location: Central New Jersey
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Re: Engine noise?
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07-12-2020, 07:54 PM | #7 | |
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Join Date: Mar 2015
Location: Greenville, SC
Posts: 1,099
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Re: Engine noise?
Quote:
John |
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07-12-2020, 11:21 PM | #8 |
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Join Date: May 2016
Location: Glide, Oregon
Posts: 1,336
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Re: Engine noise?
Shocking!
I certainly hope your starter rod is insulated from the positive side.
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Ruth "Sometimes you really DO need to read the whole thread" Last edited by Ruth; 07-13-2020 at 11:49 AM. |
07-12-2020, 10:34 PM | #9 |
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Re: Engine noise?
I'm polarized by the above statement.
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07-13-2020, 05:45 AM | #10 |
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Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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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 ! |
07-13-2020, 06:59 AM | #11 |
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Join Date: Mar 2015
Location: Greenville, SC
Posts: 1,099
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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 |
07-13-2020, 07:13 AM | #12 |
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Re: Engine noise?
Your starter switch is bad.
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07-13-2020, 07:44 AM | #13 |
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Join Date: Mar 2015
Location: Greenville, SC
Posts: 1,099
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Re: Engine noise?
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 |
07-13-2020, 08:44 AM | #14 | |
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Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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Re: Engine noise?
Quote:
There should be no electrons at all in the starter rod. Its insulated from the switch. |
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07-13-2020, 11:11 AM | #15 |
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Join Date: May 2016
Location: Glide, Oregon
Posts: 1,336
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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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Ruth "Sometimes you really DO need to read the whole thread" Last edited by Ruth; 07-13-2020 at 11:47 AM. |
07-13-2020, 11:25 AM | #16 |
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Posts: 1,196
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Re: Engine noise?
It's not bad,just not right
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07-13-2020, 03:53 PM | #17 |
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Join Date: May 2020
Location: Melbourne, FL
Posts: 28
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Re: Engine noise?
Found my noise! Carb to intake manifold gasket.
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07-13-2020, 04:32 PM | #18 |
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Join Date: May 2010
Location: Largo Florida
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Re: Engine noise?
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07-13-2020, 04:33 PM | #19 |
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Location: Illinois
Posts: 2,183
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Re: Engine noise?
Good for you. It’s always something.
John
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07-13-2020, 06:06 PM | #20 |
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Join Date: Jun 2014
Location: Land of Lincoln
Posts: 3,127
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Re: Engine noise?
Good! It's funny how noise will travel, like leaks!
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