Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 05-04-2026, 08:16 AM   #21
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by Jim/GA View Post
In Photo #1, repeat the Key On measurements with a piece of paper between the points inside the distributor. The voltages you report are consistent with the points being closed.

Your voltages are consistent with a car wired up per Henry's original scheme, the key switch is in between the coil and the distributor points. There is nothing wrong with that, it just helps to know when troubleshooting.

I assume battery is connected Positive Ground? If so, look on the coil where you have the red wire connected -- it should be labeled with a little + symbol. If not, swap those 2 coil wires.

Good luck with it.
Will measure with the key on and a paper between the points. And yes, the battery is connected to positive ground the red wire on the coil is connected to the -- terminal.
The car had been running great and driving on long distances fine. I parked if, didn't run it for a day, went out to go to the show, it started and ran for like two seconds and died, I started it again and it ran for two seconds and died and now just cranks over.
Thanks for your input, I'll post the results later today when I go home.
sconnors is offline   Reply With Quote
Old 05-04-2026, 09:40 AM   #22
katy
Senior Member
 
katy's Avatar
 
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 6,076
Default Re: No Spark - NEED HELP!

Is the under dash gas valve turned on?
__________________
If you don't hear a rumor by 10 AM, start one!.
Got my education out behind the barn!
katy is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 05-04-2026, 09:45 AM   #23
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by katy View Post
Is the under dash gas valve turned on?
Yes. I have gas, but no spark.
sconnors is offline   Reply With Quote
Old 05-04-2026, 10:19 AM   #24
gdmn852
Senior Member
 
gdmn852's Avatar
 
Join Date: Feb 2019
Location: Erie Pa
Posts: 1,114
Default Re: No Spark - NEED HELP!

Hello, a lot of good advice here, when I have electrical problems, the condenser is usually the first suspect, but you have checked that , next is the wire that connects the points on upper plate to the lower plate, wire can loosen or break because it moves with spark rod control. Ignition switch contacts also can be a problem,also is you have a known good coil you may want to change to it . As a long time Model A enthusiast found,unfortunately, just because it’s a new part doesn’t mean it’s good. Good luck,and don’t give up!!
gdmn852 is offline   Reply With Quote
Old 05-04-2026, 10:43 AM   #25
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by gdmn852 View Post
Hello, a lot of good advice here, when I have electrical problems, the condenser is usually the first suspect, but you have checked that , next is the wire that connects the points on upper plate to the lower plate, wire can loosen or break because it moves with spark rod control. Ignition switch contacts also can be a problem,also is you have a known good coil you may want to change to it . As a long time Model A enthusiast found,unfortunately, just because it’s a new part doesn’t mean it’s good. Good luck,and don’t give up!!
Thank you. I have two coils and tried them both. I have also tried two different condensers. When I replaced the top plate in the distributor, I checked the wire under the plate and everything was good, no breaks, wear, etc.
I'll keep plugging away.
sconnors is offline   Reply With Quote
Old 05-04-2026, 11:35 AM   #26
Bob Johnson
Senior Member
 
Bob Johnson's Avatar
 
Join Date: May 2010
Location: California
Posts: 1,021
Default Re: No Spark - NEED HELP!

Sponsored Links (Register now to hide all advertisements)
OK, Try this. Disconnect the high voltage wire from the top of the distributor. Remove the distributor cap, body (horn) and rotor. Have the end of the high voltage wire (still connected to the coil) near a ground point but not touching it. About 1/8". Turn over the engine with the ignition on. You should see a spark going from the end of the wire to the ground. You should also see the points open and close with a spark.


Bob
Bob Johnson is offline   Reply With Quote
Old 05-04-2026, 12:17 PM   #27
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by Bob Johnson View Post
OK, Try this. Disconnect the high voltage wire from the top of the distributor. Remove the distributor cap, body (horn) and rotor. Have the end of the high voltage wire (still connected to the coil) near a ground point but not touching it. About 1/8". Turn over the engine with the ignition on. You should see a spark going from the end of the wire to the ground. You should also see the points open and close with a spark.


Bob
I will try this today when I get home and post results
sconnors is offline   Reply With Quote
Old 05-04-2026, 01:22 PM   #28
Jim/GA
Senior Member
 
Jim/GA's Avatar
 
Join Date: May 2010
Location: Young Harris, GA
Posts: 2,093
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by sconnors View Post
Will measure with the key on and a paper between the points. And yes, the battery is connected to positive ground the red wire on the coil is connected to the -- terminal.
The car had been running great and driving on long distances fine. I parked if, didn't run it for a day, went out to go to the show, it started and ran for like two seconds and died, I started it again and it ran for two seconds and died and now just cranks over.
Thanks for your input, I'll post the results later today when I go home.
If your battery is connected Positive Ground, then the Red wire connected to the coil must be connected to the post with the little + sign next to the post. Not to the negative (-) post.

Have you disconnected the fuel line from the carburetor, swing it back away from the carburetor, opened the gas valve inside the car under the tank, and confirmed that fuel flows in a good steady stream out of the fuel line?

"Runs for a few seconds and then dies" is usually fuel related.
__________________
Jim Cannon
Former MAFCA Technical Director
"Have a Model A day!"
Jim/GA is offline   Reply With Quote
Old 05-04-2026, 02:07 PM   #29
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by Jim/GA View Post
If your battery is connected Positive Ground, then the Red wire connected to the coil must be connected to the post with the little + sign next to the post. Not to the negative (-) post.

Have you disconnected the fuel line from the carburetor, swing it back away from the carburetor, opened the gas valve inside the car under the tank, and confirmed that fuel flows in a good steady stream out of the fuel line?

"Runs for a few seconds and then dies" is usually fuel related.
Jim,
I'll double check the gas. My car's battery is positive to ground, I will double check the coil connections tonight when I get home.
sconnors is offline   Reply With Quote
Old 05-04-2026, 03:16 PM   #30
johnbuckley
Senior Member
 
johnbuckley's Avatar
 
Join Date: Jul 2010
Location: United Kingdom
Posts: 1,600
Default Re: No Spark - NEED HELP!

hotwire following this diagram to help locate any wiring fault. But since you say "With the key on if I open and close the points by hand there is spark " I would supsect a fault at the points/rotor.
Attached Images
File Type: jpg simple hot wire.jpg (117.8 KB, 15 views)

Last edited by johnbuckley; 05-04-2026 at 03:31 PM.
johnbuckley is offline   Reply With Quote
Old 05-04-2026, 04:45 PM   #31
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP!

Was able to speak with a very knowledgeable Model A friend and we did some testing and think we have it narrowed down to the ignition cable being faulty. I've ordered one and will keep you guys posted!! Much thanks!
sconnors is offline   Reply With Quote
Old 05-04-2026, 08:55 PM   #32
Jim/GA
Senior Member
 
Jim/GA's Avatar
 
Join Date: May 2010
Location: Young Harris, GA
Posts: 2,093
Default Re: No Spark - NEED HELP!

If you screwed the cable into the base of the distributor too far, it can short out things inside. You may be able to fix it by just unscrewing the cable a turn or two.
__________________
Jim Cannon
Former MAFCA Technical Director
"Have a Model A day!"
Jim/GA is offline   Reply With Quote
Old 05-05-2026, 01:01 AM   #33
Synchro909
Senior Member
 
Synchro909's Avatar
 
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 8,432
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by sconnors View Post
I used the Nu-Rex timing wrench with the motor at top dead center. But I will double check the gap.
Engine at TDC is not where you adjust the points gap. It is where the points open. Look at the points cam follower to make sure it is at the top of a lobe, then check/adjust.
__________________
When all is said and done, more is said than done. That's why we judge people on what they do, not what they say.
I sometimes wonder what happened to the people who asked me for directions.
If I am not in trouble, I've done something wrong.
Synchro909 is offline   Reply With Quote
Old 05-08-2026, 07:39 PM   #34
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP! UPDATE

Still not starting. New ignition switch and new ignition cable installed. Car just cranks. When I pull the coil wire and turn the engine, I have spark jumping from the wire to the head. When I pull a plug and turn the engine over, I have spark at the plug. As suggested by someone on the Ford Barn, I even tried spraying a little starter fluid in the cylinder before I put the plug back in and it still didn’t fire.
Here are the current voltages:
Key off:
• Starter (red) 6.28
• Starter (black) 6.28
• Coil + 6.25
• Coil – 6.25
• Points open 0.03
• Points closed 0.03
Key on:
• Starter (red) 6.28
• Starter (black) 6.05
• Coil + 0.30
• Coil 5.64
• Points open 6.22
• Points closed 0.16
ANY INPUT WOULD BE GREATLY APPRECIATED.
sconnors is offline   Reply With Quote
Old 05-08-2026, 08:28 PM   #35
Gary WA
Senior Member
 
Gary WA's Avatar
 
Join Date: May 2010
Location: Clinton,WA/Whidbey Island
Posts: 4,613
Default Re: No Spark - NEED HELP! UPDATE

Quote:
Originally Posted by sconnors View Post
Still not starting. New ignition switch and new ignition cable installed. Car just cranks. When I pull the coil wire and turn the engine, I have spark jumping from the wire to the head. When I pull a plug and turn the engine over, I have spark at the plug. As suggested by someone on the Ford Barn, I even tried spraying a little starter fluid in the cylinder before I put the plug back in and it still didn’t fire.
Here are the current voltages:
Key off:
• Starter (red) 6.28
• Starter (black) 6.28
• Coil + 6.25
• Coil – 6.25
• Points open 0.03
• Points closed 0.03
Key on:
• Starter (red) 6.28
• Starter (black) 6.05
• Coil + 0.30
• Coil 5.64
• Points open 6.22
• Points closed 0.16
ANY INPUT WOULD BE GREATLY APPRECIATED.
Are you sure the dizzy Pigtail is not shorting out??? Sure you have gas to the carb!!!!! Spray carb! see if starts! with key on are you getting a spark by opening and closing the points with small screw driver etc?? at the points??!
__________________
www.whidbeymodelaclub.com

Last edited by Gary WA; 05-08-2026 at 08:36 PM.
Gary WA is offline   Reply With Quote
Old 05-08-2026, 08:40 PM   #36
Gary WA
Senior Member
 
Gary WA's Avatar
 
Join Date: May 2010
Location: Clinton,WA/Whidbey Island
Posts: 4,613
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by sconnors View Post
Thank you. I have two coils and tried them both. I have also tried two different condensers. When I replaced the top plate in the distributor, I checked the wire under the plate and everything was good, no breaks, wear, etc.
I'll keep plugging away.
You checked the wire under plate it may look good BUT it could be grounded to body of dizzy??!! Why did you replace the top plate??
__________________
www.whidbeymodelaclub.com
Gary WA is offline   Reply With Quote
Old 05-08-2026, 08:40 PM   #37
Y-Blockhead
Senior Member
 
Y-Blockhead's Avatar
 
Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 7,288
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by sconnors View Post
I used the Nu-Rex timing wrench with the motor at top dead center. But I will double check the gap.
It is probably mentioned somewhere but did you check the timing when the piston was a TDC on the compression stroke, not the exhaust stroke. Maybe your timing is 180° out?

Sounds like you have checked everything else.
Y-Blockhead is offline   Reply With Quote
Old 05-08-2026, 09:11 PM   #38
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP! UPDATE

Quote:
Originally Posted by Gary WA View Post
Are you sure the dizzy Pigtail is not shorting out??? Sure you have gas to the carb!!!!! Spray carb! see if starts! with key on are you getting a spark by opening and closing the points with small screw driver etc?? at the points??!
With the key on I’m getting spark when opening and closing the points and there is gas to the carb
sconnors is offline   Reply With Quote
Old 05-08-2026, 09:12 PM   #39
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by Gary WA View Post
You checked the wire under plate it may look good BUT it could be grounded to body of dizzy??!! Why did you replace the top plate??
I replaced the top plate with a new condenser and points set. Trying to rule things out.
sconnors is offline   Reply With Quote
Old 05-08-2026, 09:13 PM   #40
sconnors
Senior Member
 
sconnors's Avatar
 
Join Date: Jul 2012
Location: Stephentown
Posts: 566
Default Re: No Spark - NEED HELP!

Quote:
Originally Posted by Y-Blockhead View Post
It is probably mentioned somewhere but did you check the timing when the piston was a TDC on the compression stroke, not the exhaust stroke. Maybe your timing is 180° out?

Sounds like you have checked everything else.
I had the engine at tdc and used the NU-Rex timing wrench and set the point gap at 22
sconnors is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 03:41 PM.