Engine timing

Bob from Northport

Bob from Northport

Well-known member
We received a 1915 T Coupe to my shop with fuel problems. Also a complaint of little or no power. Can anyone give me a tutorial or the basics on how to check timing on the engine. Model A's much easier.
Also any hints as to where to look for power problems.

Thanks!!
 
Is it stock commutator/coils or a distributor ? On either ignition system, one needs to advance the spark lever after starting - carburetor mixture starts at approx. 1 to 1 & 1/2 turn open from being seated then adjust accordingly.
 
Carburetors can be problematic on cars that set up too long. It could have a Holley G or a Kingston on there unless it's been modified. They are generally pretty easy to clean and get functioning properly. Crud in the fuel tank is another thing.

The coils may need to be tested for function to insure good spark. Fouled plugs may work but still have weakened spark. Timing usually isn't very critical on operator controlled systems as long as it's adjusted by the book. As long as the timer is functioning as it should then timing can just be an operator issue. Weak magnets in the magneto can be checked against the system running on battery if it has a battery. You will find that folks use several ways to time model Ts, but a lot depends on how they are equipped. This link has one way. http://www.spokanemodeltclub.com/resources/How to Time a Model T.pdf
This link has another,
http://www.mtfca.com/discus/messages/257047/291108.html?1337774890

A lot depends on the timer or distributor that is installed.

Drive line friction (or lack of enough friction in some cases) can affect power. With a band type planetary 2-speed transmission there are things that can slip. If the motor has lower than normal compression then that would be a power problem. With only 20 HP, power is always on the edge with the model Ts. Bad tires can affect power on these old cars.
 
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