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jlerviti
Joined: 05 Oct 2011 Posts: 27 Location: Warwick, MA
1951 Deluxe Chieftain
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Posted: Fri Aug 25, 2017 2:59 pm Post subject: starter problem? |
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I have a 1951 straight eight in my Chieftain. When the engine is cold the starter seems to perform just fine. However, after driving for an hour or so and turning off the engine the restart is difficult. The engine turns very slowly and sometimes I wonder if it will start at all. The engine is rebuilt with less than 5000 miles. When I returned home I checked the battery voltage which showed 6.3 vdc. The ammeter shows a positive current flow and the voltage regulator is new and it has been polarized. Anyone have any thoughts on this? |
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Larry Site Admin
Joined: 01 Jun 2006 Posts: 4774
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Posted: Mon Aug 28, 2017 9:26 pm Post subject: Hard Start |
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This is a very common 6-volt system problem. Most often it is due to the wrong battery cables.
Are you using BIG (as in thick) 6-volt cables? If you are using the thin 12-volt cables as our modern cars use, this will happen. Same goes for the ground cable. A big fat braided cable is best.
All that said, if you have the right cables, sometimes, even when they look good, they are full of corrosion between the strands.
Check the size of the cables first. If they are correct, it may be the starter. I just changed an almost new one on the 400 engine in my '40 Pontiac because it was doing that same slow start when hot, as well as clashing sometimes too.
Let us know what you find. _________________ PontiacRegistry.com... building the single largest source of Pontiac information, services, and entertainment in the world! |
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jlerviti
Joined: 05 Oct 2011 Posts: 27 Location: Warwick, MA
1951 Deluxe Chieftain
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Posted: Mon Aug 28, 2017 9:36 pm Post subject: |
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Thanks for the response. The battery cables are new and the correct size, a fact I should have mentioned in my initial post. I wonder if the starter is failing because the cables previously installed were the incorrect size. I will go forward with either having the current starter rebuilt or get a new or rebuilt unit. California Pontiac Restoration provides a rebuilding service which I may use but not until after the annual car show here in Orange, MA which occurs in October. |
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Larry Site Admin
Joined: 01 Jun 2006 Posts: 4774
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Posted: Tue Aug 29, 2017 5:22 pm Post subject: Starter Rebuild |
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Good deal with the cables, often overlooked.
If you can nurse it through summer time, that would be great.
I would bet there is a electric motor rebuilding shop somewhere near you. I have used "generic" shops in the past as to them "a motor is a motor" no matter from where it came. It might just need a good cleaning and new brushes, something most car owners can even do themselves.
Do you know Steve Peluso in MA? I bet he can connect you with a closer service. Not that CPR isn't a good choice, but that is a long way from MA, and they probably will send it out too. Steve might be able to do it for you. He has his own shop, perhaps close to you. He does a lot of older car repairs for people all through the NE. _________________ PontiacRegistry.com... building the single largest source of Pontiac information, services, and entertainment in the world! |
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jlerviti
Joined: 05 Oct 2011 Posts: 27 Location: Warwick, MA
1951 Deluxe Chieftain
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Posted: Tue Aug 29, 2017 5:40 pm Post subject: |
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I definitely know Steve, he's a fantastic resource for anyone who may read this and is near his shop in West Roxbury, MA. The post I left a while back about surging was corrected by Steve. He discovered that the points were not being held tightly by the screw and replaced the points with a electronic set up. That has significantly improved the running of the engine. I had not thought to check with him about the starter and I will be emailing him shortly, thanks for the reminder. |
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Larry Site Admin
Joined: 01 Jun 2006 Posts: 4774
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Posted: Tue Aug 29, 2017 8:36 pm Post subject: '51 Pontiac Work |
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Steve is moving from his old shop soon and in his new shop/adventure he will be trying to do even more old car repairs. Guess the automatic transmission business isn't what it used to be.
Tell him I recommended him. He is a very good friend. Tell him "Larr-rry sent you!" _________________ PontiacRegistry.com... building the single largest source of Pontiac information, services, and entertainment in the world! |
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Larry Site Admin
Joined: 01 Jun 2006 Posts: 4774
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Posted: Thu Oct 12, 2017 9:55 am Post subject: Starting Problem |
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Before you go with a rebuild, I have been experiencing the same thing on my '40. Although it now has a 400 T/A engine, it is doing the same thing. And because it started happening out of the blue, I assumed it was a faulty (though new) starter, and replaced it. But it has continued.
I have come to the conclusion it is due to our super hot weather here in Florida this summer. So I started some searching for answers.
It seems many people with the same issue as you and I solved it with the addition of a bigger or additional ground from the engine to the frame... what the heck, it's worth a try!
Their comments were that the heat really adversely affects the ability of the negative charge to return to the battery through all the various connections. So even though I think I had a good number of good connections: battery-to-engine-to frame with good size wires, I added a big fat 6V cable I had laying around right under one of the starter bolts and directly to the frame. Naturally I sanded the paint of the frame bracket I used.
While I haven't tried it yet. I'm hoping I can add my name to the list of others who said it cured their starting problem. _________________ PontiacRegistry.com... building the single largest source of Pontiac information, services, and entertainment in the world! |
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