I have a 1921 touring. Two years ago I had the engine rebuilt and it has been running like a trooper up to 2 weeks ago.
I have been on 3 tours and the last one was in Lexington Michigan. That's when she developed a miss.
I nursed her home and then started to look for the problem. Gas was getting through nice and clean. Spark plugs were cleaned and gapped.
No change. The roller timer was a little rough so that was replaced with new. Still missing and at this point the #1 plug was not firing.
Replaced the #1 coil. Now it won't fire and is back firing.
So I checked all the connections and placed the spark plugs on the block. Turning the engine by the crank I got spark on #1,2,4,3 in that order.
When the #1 is sparking the piston seems to be at the top. Reinstalled plugs and it still will not start and is backfiring. When the plugs are removed they are wet so to me that indicates they are getting gas.
What am i missing?? Any suggestions would be appreciated.
I'm puzzled
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Glenn 1923
Topic author - Posts: 3
- Joined: Sat Jun 10, 2023 3:41 pm
- First Name: Glenn
- Last Name: Kolano
- * REQUIRED* Type and Year of Model Ts owned: 1921 Canadian touring
- Location: London Ontario
- Board Member Since: 2023
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zdillinger
- Posts: 27
- Joined: Fri Jun 25, 2021 1:33 pm
- First Name: Zachary
- Last Name: Dillinger
- * REQUIRED* Type and Year of Model Ts owned: 1926 Ford Model T
- Location: Charlotte, MI
Re: I'm puzzled
Does it do it when running on magneto, battery, or both?
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TXGOAT2
- Posts: 7391
- Joined: Sun Feb 14, 2021 10:08 pm
- First Name: Pat
- Last Name: McNallen
- * REQUIRED* Type and Year of Model Ts owned: 1926-7 roadster
- Location: Graham, Texas
- Board Member Since: 2021
Re: I'm puzzled
Did your car get rained on, either running or parked, or did you wash it? A damp coil box or any other part of the high tension side of the ignition system can cause issues. If you have wooden parts in your ignition system, problems may persist even after everything is completely dry.
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Glenn 1923
Topic author - Posts: 3
- Joined: Sat Jun 10, 2023 3:41 pm
- First Name: Glenn
- Last Name: Kolano
- * REQUIRED* Type and Year of Model Ts owned: 1921 Canadian touring
- Location: London Ontario
- Board Member Since: 2023
Re: I'm puzzled
Mine doesn't run on mag. Battery only the last years.
Did have a bit of rain on tour but coil box was dry and in good shape.
Did have a bit of rain on tour but coil box was dry and in good shape.
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DanTreace
- Posts: 3812
- Joined: Sun Jan 06, 2019 10:56 am
- First Name: Dan
- Last Name: Treace
- * REQUIRED* Type and Year of Model Ts owned: ‘12 open express,'23 cutoff, '27 touring
- Location: North Central FL
- Board Member Since: 2000
- Contact:
Re: I'm puzzled
Coil or two may be grounding out at the timer case.
Check carefully to be sure the timer housing contacts are not hitting any metal, like a bolt head, timing rod, or the front plate.
Check carefully to be sure the timer housing contacts are not hitting any metal, like a bolt head, timing rod, or the front plate.
The best way is always the simplest. The attics of the world are cluttered up with complicated failures. Henry Ford
Don’t find fault, find a remedy; anybody can complain. Henry Ford
Don’t find fault, find a remedy; anybody can complain. Henry Ford
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Norman Kling
- Posts: 4634
- Joined: Tue Jan 08, 2019 1:39 pm
- First Name: Norman
- Last Name: Kling
- Location: Alpine California
Re: I'm puzzled
Do a compression test. All cylinders should be about the same compression. Also check for an intake manifold leak. if it is drawing in air, on one side of the manifold, it would cause a lean mixture. This could cause a backfire. Especially if it spits through the carburetor.
Norm
Norm
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Glenn 1923
Topic author - Posts: 3
- Joined: Sat Jun 10, 2023 3:41 pm
- First Name: Glenn
- Last Name: Kolano
- * REQUIRED* Type and Year of Model Ts owned: 1921 Canadian touring
- Location: London Ontario
- Board Member Since: 2023
Re: I'm puzzled
Great suggestions!
Tomorrow at the shop I will check the box and connections again and do a compression test.
Tomorrow at the shop I will check the box and connections again and do a compression test.
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John kuehn
- Posts: 4433
- Joined: Sun Jan 06, 2019 8:00 pm
- First Name: John
- Last Name: Kuehn
- * REQUIRED* Type and Year of Model Ts owned: 19 Roadster, 21 Touring, 24 Coupe
- Location: Texas
Re: I'm puzzled
Don’t do any tare down removing engine parts or whatever.
Ck all the electrical connections, timer wires rubbing on the block, especially the coil box, wiring, any area where it could be grounded.
IF YOU ARE IN A GARAGE START WHEN ITS DARK OR AT NIGHT. Check the car and see if there is any sparking or any connection not arcing when a wire is taken off and on. A loose nut on the coil box can give you fits. Been there and done that and that’s all it was on my car. I should have checked it first but didn’t.
Good luck!
Ck all the electrical connections, timer wires rubbing on the block, especially the coil box, wiring, any area where it could be grounded.
IF YOU ARE IN A GARAGE START WHEN ITS DARK OR AT NIGHT. Check the car and see if there is any sparking or any connection not arcing when a wire is taken off and on. A loose nut on the coil box can give you fits. Been there and done that and that’s all it was on my car. I should have checked it first but didn’t.
Good luck!