Recently purchased a model F.
Compression good
Set the time to fire at tdc when retarded
Good spark and correct firing order.
Would not start.
Took the carb. apart and check it all out.
I put a flat belt on and turned it with another tractor.
The input is the exhaust and the exhaust is the intake.
It is a major operation to check the timing gears. So I was wondering if anyone has had this happen?
Could it be anything other than the 0's on the timing gears are not lined up?
Timing on Fordson Tractor
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ModelTnut
Topic author - Posts: 4
- Joined: Mon Mar 11, 2019 8:16 am
- First Name: John
- Last Name: Krug
- * REQUIRED* Type and Year of Model Ts owned: 1919 open express, 1921 center door, 1917 ambulance, 1916 scout car, 1924 TT grain truck, 1922 coupe, 1921 delivery, tractor conversion, 1922 Fire Eng
- Location: Ottawa, IL
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Ruxstel24
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Re: Timing on Fordson Tractor
Unless you're turning the engine over backwards, I think you nailed it. Has to be out of time.
Happy hunting !
Happy hunting !
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ModelTnut
Topic author - Posts: 4
- Joined: Mon Mar 11, 2019 8:16 am
- First Name: John
- Last Name: Krug
- * REQUIRED* Type and Year of Model Ts owned: 1919 open express, 1921 center door, 1917 ambulance, 1916 scout car, 1924 TT grain truck, 1922 coupe, 1921 delivery, tractor conversion, 1922 Fire Eng
- Location: Ottawa, IL
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Re: Timing on Fordson Tractor
Thanks,
I am turning it the right way.
I am turning it the right way.
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namdc3
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- Last Name: Martin
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Re: Timing on Fordson Tractor
Since the intake and exhaust work right next to each other (IOW, disregarding overlap, compression and power strokes have no valves and then exhaust and intake are next to each other), I don't think the cam gear being off mark would perfectly switch them.
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ModelTnut
Topic author - Posts: 4
- Joined: Mon Mar 11, 2019 8:16 am
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Re: Timing on Fordson Tractor
They are not perfectly switched, but almost.
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namdc3
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Re: Timing on Fordson Tractor
Thinking a little more, it would act this way if the cam gear was off about 90 degrees (quarter turn) in either direction. 90 degrees one way would make Exh open on the intake stroke and Int open on the compression stroke. 90 degrees the other way would make Exh open on the power stroke and Int open on the exhaust stroke. Either one shows itself as the Exh valve open with the piston travelling down and the Int valve open with the piston travelling up.
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ModelTnut
Topic author - Posts: 4
- Joined: Mon Mar 11, 2019 8:16 am
- First Name: John
- Last Name: Krug
- * REQUIRED* Type and Year of Model Ts owned: 1919 open express, 1921 center door, 1917 ambulance, 1916 scout car, 1924 TT grain truck, 1922 coupe, 1921 delivery, tractor conversion, 1922 Fire Eng
- Location: Ottawa, IL
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Re: Timing on Fordson Tractor
Yes Nikolaus someone had put it together wrong. I did not keep track of how many teeth but it was quite a few. The exhaust valve now opens at the bottom of the power stroke and when run by the belt the intake is the intake.
I need to wait for new gaskets to put it together and see if it runs.
I need to wait for new gaskets to put it together and see if it runs.
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Duey_C
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Re: Timing on Fordson Tractor
The '18 model T that lives here (worked on last by the previous owners in the 70's) had the cam gear clocked about 90 degrees to the crank so it sure can happen! No idea how and I cannot imagine it myself. It happens.
IMPO, do the surgery so YOU know.
Bummer just the same ya?
IMPO, do the surgery so YOU know.
Bummer just the same ya?
Since I lost my mind mind, I feel more liberated