Starter issues on my 70 C10 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ClassicGuy · 07-24-2017, 10:58 PM

I'm having issues with my truck again. I have a sbc350 with a T400 transmission automatic. Everything is new, motor, tranny, everything. My starter is not spinning the flexplate now. It will start once or twice then just spins and makes a winding noise. Flexplate is new and so is the started. I shimmed it and it started but then did the same thing again. Could my flexplate be bent? Any suggestions are appreciated. Thanks fellas

bill3rail · 07-24-2017, 11:09 PM

Quote:

Originally Posted by ClassicGuy

I'm having issues with my truck again. I have a sbc350 with a T400 transmission automatic. Everything is new, motor, tranny, everything. My starter is not spinning the flexplate now. It will start once or twice then just spins and makes a winding noise. Flexplate is new and so is the started. I shimmed it and it started but then did the same thing again. Could my flexplate be bent? Any suggestions are appreciated. Thanks fellas

It may not be throwing the gear out on the starter. Have you directly jumped the starter to see?
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demian5 · 07-25-2017, 11:33 AM

To operate the starter off of the vehicle to check operation:

1. Remove the starter from the vehicle.
2. Secure the starter in a vice or similar to prevent it from moving.
3. Using jumper cables, connect one end to the positive (+) and negative (-) terminals of a good battery.
4. Connect the other end of the jumper cables negative (-) to the starter case where it bolts to the engine, and connect the positive (+) clamp to the nut where the battery cable connects.
5. Using a screwdriver (or equivalent tool), jump between the terminal where the small starter wire connects and the jumper cable positive (+) clamp.
6. Check that starter gear comes all the way out and that starter rotates.

Wrenchbender Ret · 07-25-2017, 02:56 PM

You have a bad starter drive on the end of the starter. The drive is a one way clutch. It is not holding all the time or releasing too soon.

**LockDoc** · 07-25-2017, 03:30 PM

Try lubing the bendix. It sounds like it is dry.

LockDoc

custom10nut · 07-25-2017, 06:10 PM

Sorta sounds like a solinoid issue. Lube the bendix like LocDoc says first

Mike (Asheville) · 07-25-2017, 08:55 PM

May still not be shimmed enough. I had the advantage of having my engine on a stand when I installed a new starter. It needed several washers before it would clear the flexplate teeth properly every time.

07-24-2017, 10:58 PM	#1
ClassicGuy Registered User Join Date: Dec 2011 Location: Napa, Ca. Posts: 68	Starter issues on my 70 C10 I'm having issues with my truck again. I have a sbc350 with a T400 transmission automatic. Everything is new, motor, tranny, everything. My starter is not spinning the flexplate now. It will start once or twice then just spins and makes a winding noise. Flexplate is new and so is the started. I shimmed it and it started but then did the same thing again. Could my flexplate be bent? Any suggestions are appreciated. Thanks fellas

07-25-2017, 11:33 AM	#3
demian5 Registered User Join Date: Aug 2016 Location: Lake Forest, CA Posts: 2,178	Re: Starter issues on my 70 C10 To operate the starter off of the vehicle to check operation: 1. Remove the starter from the vehicle. 2. Secure the starter in a vice or similar to prevent it from moving. 3. Using jumper cables, connect one end to the positive (+) and negative (-) terminals of a good battery. 4. Connect the other end of the jumper cables negative (-) to the starter case where it bolts to the engine, and connect the positive (+) clamp to the nut where the battery cable connects. 5. Using a screwdriver (or equivalent tool), jump between the terminal where the small starter wire connects and the jumper cable positive (+) clamp. 6. Check that starter gear comes all the way out and that starter rotates. __________________ "Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC

07-25-2017, 02:56 PM	#4
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: Starter issues on my 70 C10 You have a bad starter drive on the end of the starter. The drive is a one way clutch. It is not holding all the time or releasing too soon.

07-25-2017, 03:30 PM	#5
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 26,069	Re: Starter issues on my 70 C10 Try lubing the bendix. It sounds like it is dry. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

07-25-2017, 06:10 PM	#6
custom10nut Registered User Join Date: Apr 2015 Location: East Tn (In the heart of the Smoky Mtns) Posts: 1,903	Re: Starter issues on my 70 C10 Sorta sounds like a solinoid issue. Lube the bendix like LocDoc says first

07-25-2017, 08:55 PM	#7
Mike (Asheville) Registered User Join Date: Jul 2017 Location: Asheville NC Posts: 36	Re: Starter issues on my 70 C10 May still not be shimmed enough. I had the advantage of having my engine on a stand when I installed a new starter. It needed several washers before it would clear the flexplate teeth properly every time.



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