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02-13-2022, 04:05 PM | #1 |
Junior Member
Join Date: Feb 2022
Location: Oklahoma City, OK
Posts: 2
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Starter is not generating enough torque
Hello all,
I was attempting to start up my Model “A” earlier this afternoon but the starter would not turn. I charged my battery overnight and the charger said the battery was fully charged. So, I removed the starter and bench tested it by attaching some jumper cables to my battery, grounding the negative end on the starter and touching the positive end to the node of the starter (I removed the starter switch). The starter turned, but at a very low and inconsistent RPM. I had bench tested the motor before, about a year ago, and it turned at a much higher RPM and it was a consistent RPM, so I’m almost certain the issue lies with the starter itself. Does anyone have any thoughts on what the issue may be? |
02-13-2022, 04:56 PM | #2 |
Senior Member
Join Date: May 2010
Location: Clinton,WA/Whidbey Island
Posts: 4,105
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Re: Starter is not generating enough torque
Or your battery shows good after a charge but Not! Need to load test it! take to auto parts they will load test it !
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02-13-2022, 05:05 PM | #3 |
Senior Member
Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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Re: Starter is not generating enough torque
I agree with Gary regarding the battery.
Make sure the cables are heavy enough [ #0 or #1 ] and the connections are clean and tight. Especially the ground at the frame. Also I prefer to test the starter on the vehicle. A ' hold on to ' ammeter is fairly cheap and easy to use. Anything over 450-500 amps is getting to be too much draw. Around 400 amps is better. Last edited by Patrick L.; 02-13-2022 at 09:54 PM. |
02-13-2022, 08:52 PM | #4 |
Senior Member
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Re: Starter is not generating enough torque
The Model A Ford has a positive ground. Negative cable goes to starter switch. 6volt starters need heavy battery cables.
Good Luck Dan |
02-13-2022, 09:08 PM | #5 |
Senior Member
Join Date: Mar 2014
Location: Columbus(Cataula) Georgia
Posts: 849
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Re: Starter is not generating enough torque
We just finished helping a fellow club member with a similar problem. He purchased a new battery a week ago and the car would not turn over. I checked the starter terminal and would register over 6 volts. I tought it was the starter and placed another one I had and still the engine would not turn over. My fellow club member took the new battery back to the auto part store and the battery was DEFECTIVE! He got a new battery and the car started immediately. Moral of the story: Just because its a new battery it could be defective, Besides checking the voltage, they need to check it with a load.
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Henry' s 31 |
02-13-2022, 09:09 PM | #6 |
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Join Date: Mar 2014
Location: Columbus(Cataula) Georgia
Posts: 849
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Re: Starter is not generating enough torque
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Henry' s 31 |
02-13-2022, 09:33 PM | #7 |
Senior Member
Join Date: May 2010
Location: Maryville, TN
Posts: 491
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Re: Starter is not generating enough torque
Years ago when I got my first Model A I had a starter problem. Eventually my wife would not help by pushing the car down my slightly downhill street. I took the starter to a repair shop and the problem was a bent starter shaft. They were able to straighten it out. It is now my spare.
Vic |
02-14-2022, 02:05 PM | #8 |
Senior Member
Join Date: May 2010
Location: Concord CA
Posts: 637
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Re: Starter is not generating enough torque
With starter removed from car check end play, should be .010-.020". If less the rear bushing (Bendix end) needs to be adjusted.
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02-14-2022, 02:19 PM | #9 |
Senior Member
Join Date: Oct 2017
Posts: 563
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Wife won’t help
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02-14-2022, 03:52 PM | #10 |
Senior Member
Join Date: Jan 2012
Location: Western North Carolina
Posts: 3,900
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Re: Starter is not generating enough torque
If you have doubts about the battery, you can just use jumper cables to your modern car 12 volt battery. I will not hurt the starter for a short duration. Hold the starter with your foot. The polarity does not matter, the starter will work with either polarity.
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A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past. |
02-14-2022, 06:30 PM | #11 |
Senior Member
Join Date: May 2010
Location: So Minn
Posts: 1,565
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Re: Starter is not generating enough torque
Check the starter switch that is on top of the starter. It may not be making a good contact.
This photo came from the H.A.M.B. forum and shows how a solenoid could be hooked up. The Model A switch is reversed and the cable is attached to the forward terminal. https://www.jalopyjournal.com/forum/...6-jpg.3083907/ Last edited by Cool Hand Lurker; 02-14-2022 at 06:42 PM. Reason: More info |
02-14-2022, 08:30 PM | #12 |
Member
Join Date: Jan 2022
Location: Benton, KY
Posts: 32
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Re: Starter is not generating enough torque
I just went through similar problem. Checked battery and cables like you said. Bench tested etc. Disassembled for a look inside and found my issue. Mine ended up being the rear armature bushing was pulverized. I replaced the bushing and then drilled a tiny hole in the back plate so I can oil it every now and again.
Last edited by Busmoss; 02-14-2022 at 08:49 PM. Reason: Add photo |
02-15-2022, 09:46 AM | #13 |
Senior Member
Join Date: Nov 2020
Location: Hollister, CA
Posts: 133
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Re: Starter is not generating enough torque
A worn-out commutator (surface starting to miss plating) will do that too. Inconsistent and slow.
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02-22-2022, 02:13 PM | #14 |
Senior Member
Join Date: Dec 2016
Location: Sunrise Beach, Mo
Posts: 439
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Re: Starter is not generating enough torque
I venture you have a vehicle with a 12 volt battery! Don't do this for very long but just touch the terminals to the starter and see if it runs! If so you may have a bad 6 v battery. otherwise if it does not run any better, could be brushes or ??
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02-22-2022, 02:56 PM | #15 |
Senior Member
Join Date: May 2010
Location: Fairfax, VA
Posts: 3,393
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Re: Starter is not generating enough torque
Brushes good?" Commutator clean and shiny/
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02-22-2022, 04:56 PM | #16 |
Senior Member
Join Date: Sep 2019
Location: Fort Gratiot, Michigan
Posts: 2,296
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Re: Starter is not generating enough torque
Is it a 12 volt System?
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02-22-2022, 09:07 PM | #17 |
Senior Member
Join Date: May 2010
Location: Between Seattle & Tacoma
Posts: 2,354
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Re: Starter is not generating enough torque
Where’d ya go?
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02-22-2022, 11:03 PM | #18 |
Senior Member
Join Date: Jan 2012
Location: Western North Carolina
Posts: 3,900
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Re: Starter is not generating enough torque
Argoubik, What was the resolution of your starter problem? Or are you still working on it? We all learn from these discussions, even us old farts who have been around Model A's since they were new.
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A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past. |
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